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Genus Eucalyptus Family Myrtaceae

Description: Trees, mallees or shrubs, often forming an underground lignotuber in many species; bark persistent (`rough barks'), or partly or wholly regularly shedding (`smooth barks').

Leaves dimorphic; juvenile leaves opposite; adult leaves usually disjunct opposite (appearing alternate); similifacial or less commonly dorsiventral, oil glands usually present in leaves.

Inflorescences usually based on condensed dichasia, forming umbellasters, mostly solitary and axillary but sometimes aggregated into compound terminal, pseudo-terminal or axillary structures; individual umbellasters usually 7-flowered, but ranging from 1 to >30 flowers in some species. Calyx and/or corolla fused into a calyptra which persists to anthesis. Stamens numerous, usually in several continuous whorls; anthers versatile or adnate, dehiscing by separate or confluent slits or pores. Ovary half-inferior, 2–7-locular, enclosed by hypanthium except at top; ovules numerous, ovulodes present.

Fruit a capsule, becoming woody in most species.


Distribution and occurrence: World: >800 species, all but 16 spp. endemic to Aust. (10 spp. native, 9 spp. N.G., Indon., Philipp.), all States (c. 240 spp. in N.S.W.). Refs Brooker (2000), Chippendale (1988), Hill (1997a & b, 1999), Hill & Johnson (1991, 1995), Hunter (1998b), Hunter & Bruhl (1999), Johnson & Hill (1990, 1999).

Species of Eucalyptus dominate most plant communities in all but the wettest, coldest and driest parts of the continent.

Many species are economically of great importance within Australia as timber, nectar resources for honey production, and for shelter in agricultural and pastoral regions. Species are extensively planted world-wide for timber, fuel, essential oils and pharmaceuticals. The eucalypts show a wide diversity, yet individual species are frequently finely defined and difficult to differentiate. Active taxonomic and morphological study in the group is proceeding, and many species remain to be defined. Generic and infrageneric relationships and limits are also under review. A summary and bibliography are presented by Chippendale (1988). A recent classification by Brooker (2000), formalises many of the names of Pryor and Johnson (1971) for infrageneric taxa that had not been formally published. However, species in this treatment are arranged in natural groupings in the text, following Pryor and Johnson (1971) and subsequent modifications of that system, not that of Brooker (2000).

Text by K.D. Hill
Taxon concept:

Bud and fruit development in Eucalyptus. A, bud with outer calyptra shed before inner calyptra; B, longitudinal section of bud 'A' after outer calyptra has been shed; C, fruit formed from bud 'B' showing calyptra and staminal ring scars, raised disc and exserted valves; D, longitudinal section of bud with calyptra shed as a single unit; E, fruit formed from bud 'D' showing calyptra and staminal ring scars, depressed disc and enclosed valves.

Taxa not yet included in identification key
Eucalyptus calidissima,    Eucalyptus castrensis,    Eucalyptus cephalocarpa,    Eucalyptus expressa,    Eucalyptus forresterae,    Eucalyptus odorata,    Eucalyptus scoparia,    Eucalyptus sp. Cattai (Gregson s.n. 28 Aug 1954),    Eucalyptus sp. Howes Swamp Creek (M.Doherty 26)

 Key to the species 
1Bark rough, persistent over entire trunk2
Bark smooth on trunk170
Bark not ironbark
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3Stamens with filaments regularly inflexed, anthers cuboid4
Stamens with filaments irregularly flexed, anthers globose
                       Back to 2
4Adult leaves strongly discolorous5
Adult leaves concolorous or weakly discolorous
                       Back to 3
5Fruit 4-angledEucalyptus fergusonii
Fruit not angled
                       Back to 4
Eucalyptus paniculata
6Calyptra scar present7
No calyptra scar present
                       Back to 4
7Adult leaves glossy8
Adult leaves dull
                       Back to 6
8Longest petioles <20 mm long, largest adult leaves <15 cm longEucalyptus placita
Longest petioles >20 mm long, largest adult leaves >15 cm long
                       Back to 7
Eucalyptus ancophila
9Adult leaves <1.2 cm wideEucalyptus beyeriana
Adult leaves >1.2 cm wide
                       Back to 7
10Adult leaves green or grey-green11
Adult leaves glaucous
                       Back to 9
11Fruit 4-angledEucalyptus tetrapleura
Fruit not angled
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12Juvenile leaves glossy greenEucalyptus ancophila
Juvenile leaves dull, grey-green
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13Juvenile leaves lanceolate, 15–20 cm longEucalyptus fusiformis
Juvenile leaves narrow-elliptic to elliptic, 3.5–9 cm long
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Eucalyptus scopulorum
14Fruit longer than broad; adult leaves acute15
Fruit shorter than broad; adult leaves rounded
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Eucalyptus panda
15Adult leaves broad-lanceolate to ovateEucalyptus caleyi
Adult leaves narrow-lanceolate to lanceolate
                       Back to 14
Eucalyptus fusiformis
16Inflorescences 3-floweredEucalyptus tricarpa
Inflorescences >3-flowered
                       Back to 6
Eucalyptus sideroxylon
17Adult leaves opposite, ovate to orbiculateEucalyptus melanophloia
Adult leaves disjunct, broad-lanceolate or narrow-lanceolate
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18Valves distinctly exserted19
Valves not distinctly exserted
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19Buds not glaucous20
Buds glaucous
                       Back to 18
Eucalyptus nubila
20Calyptra more than twice as long as hypanthiumEucalyptus fibrosa
Calyptra less than twice a long as hypanthium
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21Disc flatEucalyptus ophitica
Disc depressed
                       Back to 20
Eucalyptus siderophloia
22Calyptra conical, acute; juvenile leaves orbiculate to broad-lanceolate23
Calyptra rounded or obtuse; juvenile leaves linear to narrow-lanceolate
                       Back to 18
Eucalyptus crebra
23Buds glaucousEucalyptus nubila
Buds not glaucous
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24Juvenile leaves broad-lanceolate to ovate, apex acute or obtuseEucalyptus siderophloia
Juvenile leaves orbiculate, apex rounded
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Eucalyptus fracta
Not stringybarks
                       Back to 2
26Fruit pyriform to conical, flat-topped; inflorescences aggregated or paired27
Fruit not as above; inflorescences usually solitary
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27Inflorescences axillary, often paired; calyptra scar absentEucalyptus fastigata
Inflorescences aggregated at shoot tips; calyptra scar present
                       Back to 26
Eucalyptus microcorys
28Fruit ovoid to urceolate and disc strongly depressed29
Fruit hemispherical to globose or ovoid; if ovoid then disc not strongly depressed
                       Back to 26
29Fruit smooth30
Fruit ribbed
                       Back to 28
Eucalyptus planchoniana
30Adult leaves concolorousEucalyptus obliqua
Adult leaves strongly discolorous
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31Fruit 4-lobed at topEucalyptus baileyana
Fruit not 4-lobed at top
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32Buds and fruit sessileEucalyptus botryoides
Buds and fruit pedicellate
                       Back to 31
Eucalyptus robusta
33Leaves with lateral veins obtuse, reticulation dense and regular, juvenile leaves glabrous34
Leaves with lateral veins acute, reticulation sparse and irregular; juvenile leaves hairy
                       Back to 28
34Adult leaves strongly discolorousEucalyptus acmenoides
Adult leaves not strongly discolorous
                       Back to 33
35Juvenile leaves broad-lanceolate to ovate36
Juvenile leaves narrow-lanceolate
                       Back to 34
36Adult leaves greenEucalyptus umbra
Adult leaves blue
                       Back to 35
Eucalyptus carnea
37Fruit 5–6 mm diam.Eucalyptus apothalassica
Fruit 6–8 mm diam.
                       Back to 35
Eucalyptus psammitica
38Buds and fruit distinctly pedicellate, fruit clusters open39
Buds and fruit sessile or shortly pedicellate (pedicels obscured if present), fruit clusters crowded
                       Back to 33
39Leaves strongly discolorousEucalyptus muelleriana
Leaves concolorous or weakly discolorous
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40Disc broad, raised41
Disc narrow, not raised
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41Buds acute or rostrate42
Buds rounded
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42Buds rostrate43
Buds acute
                       Back to 41
43Buds angularEucalyptus cannonii
Buds not angular
                       Back to 42
Eucalyptus macrorhyncha
44Buds angularEucalyptus subtilior
Buds not angular
                       Back to 42
Eucalyptus tindaliae
45Buds angularEucalyptus prominula
Buds not angular
                       Back to 41
Eucalyptus laevopinea
46Adult leaves with length:breadth ratio of <3:1Eucalyptus caliginosa
Adult leaves with length:breadth ratio of >3:1
                       Back to 40
47Adult leaves thin, noticeably discolorousEucalyptus eugenioides
Adult leaves not thin, concolorous
                       Back to 46
Eucalyptus conjuncta
48Adult leaves with length:breadth ratio of >3:149
Adult leaves with length:breadth ratio of <3:1
                       Back to 38
49Valves small, mostly enclosed50
Valves large, prominently exserted
                       Back to 48
50Adult leaves with a bluish sheen51
Adult leaves green, without a bluish sheen
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51Juvenile leaves ovate (length:breadth ratio of 1.5–2:1), petiole >5 mm longEucalyptus agglomerata
Juvenile leaves broad-lanceolate to ovate (length:breadth ratio of 2–2.5:1), petiole <5 mm long
                       Back to 50
Eucalyptus subcaerulea
52Buds angularEucalyptus capitellata
Buds not angular
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53Juvenile leaves broad-lanceolate to ovate54
Juvenile leaves narrow-lanceolate
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54Fruit globose to flattened-globose55
Fruit hemispherical
                       Back to 53
Eucalyptus cameronii
55Adult leaves concolorous; south of the Hunter River56
Adult leaves slightly discolorous; north from Coffs Harbour
                       Back to 54
Eucalyptus tindaliae
56Fruit <7 mm diam.Eucalyptus oblonga
Fruit >7 mm diam.
                       Back to 55
Eucalyptus imitans
57Adult leaves mostly <6 cm longEucalyptus tenella
Adult leaves mostly >6 cm long
                       Back to 53
58Fruit hemisphericalEucalyptus mckieana
Fruit globose or flattened-globose
                       Back to 57
59Adult leaves lanceolateEucalyptus sparsifolia
Adult leaves linear to narrow-lanceolate
                       Back to 58
Eucalyptus ralla
60Branchlets glaucous, sharply 4-angled or winged; fruit with a medial ridge; usually malleesEucalyptus boliviana
Branchlets not glaucous, terete or moderately 4-angled; trees
                       Back to 49
61Intermediate leaves orbiculateEucalyptus williamsiana
Intermediate leaves oblong or elliptic
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62Buds and adult leaves glossy greenEucalyptus youmanii
Buds and leaves ± dull, ± bluish
                       Back to 61
Eucalyptus subtilior
63Disc flat, valves mostly enclosed64
Disc raised, valves distinctly exserted
                       Back to 48
64Buds finely wartyEucalyptus baxteri
Buds not warty
                       Back to 63
65Buds angular66
Buds not angular
                       Back to 64
66Juvenile leaves cordateEucalyptus camfieldii
Juvenile leaves ovate
                       Back to 65
Eucalyptus bensonii
67Adult leaves similifacialEucalyptus ligustrina
Adult leaves dorsiventral
                       Back to 65
68Disc thick, flatEucalyptus globoidea
Disc thin, slightly depressed
                       Back to 67
Eucalyptus yangoura
69Shrubs and mallees; branchlets glaucousEucalyptus boliviana ms.
Trees; branchlets not glaucous
                       Back to 63
Eucalyptus blaxlandii
70Valves of fruit enclosed71
Valves of fruit exserted
                       Back to 25
71Adult leaves strongly discolorous72
Adult leaves concolorous or weakly discolorous
                       Back to 70
72Adult leaves closely penniveined73
Adult leaves not closely penniveined
                       Back to 71
73Buds and fruit sessileEucalyptus botryoides
Buds and fruit pedicellate
                       Back to 72
74Fruit cylindrical to urceoolate, 10–18 mm long, 6–11 mm diam.Eucalyptus robusta
Fruit conical to pyriform, 5–9 mm long, 4–6 mm diam.
                       Back to 73
Eucalyptus microcorys
75Stamens regularly inflexed76
Stamens irregularly flexed
                       Back to 72
Eucalyptus rummeryi
76Adult leaves with some stomates on the upper surfaceEucalyptus rudderi
Adult leaves with stomates on the lower surface only
                       Back to 75
77Fruit ovoid, 3–5 mm long, 2–4 mm diam.Eucalyptus hypostomatica
Fruit conical to pyriform, 5–9 mm long, 4–6 mm diam.
                       Back to 76
Eucalyptus microcorys
78Juvenile leaves opposite for many pairs79
Juvenile leaves opposite for only a few pairs
                       Back to 71
79Branchlets square80
Branchlets not square
                       Back to 78
80Buds and fruit glaucousEucalyptus pyrocarpa
Buds and fruit not glaucous
                       Back to 79
Eucalyptus pilularis
81Adult leaves broad-lanceolate to ovate82
Adult leaves mostly lanceolate or narrower
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82Adult leaves with 3 longitudinal veins (3-veined)83
Adult leaves with only 1 longitudinal vein (midvein)
                       Back to 81
Eucalyptus dives
83Juvenile leaves elliptic or orbiculateEucalyptus stellulata
Juvenile leaves narrow-elliptic
                       Back to 82
Eucalyptus copulans
84Adult leaves green85
Adult leaves blue
                       Back to 81
85Bark rough on branches; disc flat86
Branches wholly smooth; disc depressed
                       Back to 84
Eucalyptus elata
86Calyptra scar absentEucalyptus radiata
Calyptra scar present
                       Back to 85
Eucalyptus aggregata
87Adult leaves often >1.5 cm wideEucalyptus croajingolensis
Adult leaves <1.5 cm wide
                       Back to 84
Eucalyptus robertsonii
88Calyptra scar absent89
Calyptra scar present
                       Back to 78
89Stamens regularly inflexed90
Stamens irregularly flexed in bud
                       Back to 88
90Anthers adnate, dehiscing through separate slits91
Anthers versatile, reniform, dehiscing through confluent slits
                       Back to 89
91Fruit much longer than broadEucalyptus ochrophloia
Fruit about as long as broad
                       Back to 90
Eucalyptus melliodora
92Fine peppermint bark93
Coarse thick fissured or fibrous bark
                       Back to 90
93Fruit hemisphericalEucalyptus andrewsii
Fruit not hemispherical
                       Back to 92
94Northern Tablelands speciesEucalyptus campanulata
South Coast and Southern Tablelands species
                       Back to 93
Eucalyptus consideniana
95Disc depressedEucalyptus stenostoma
Disc flat
                       Back to 92
96Twigs glaucous, with a peppermint smellEucalyptus sieberi
Twigs not glaucous, with an unpleasant smell
                       Back to 95
Eucalyptus olida
97Juvenile leaves green98
Juvenile leaves blue
                       Back to 89
98Juvenile leaves hairy; fruit 13–18 mm diam.Eucalyptus olsenii
Juvenile leaves not hairy; fruit 2–10 mm diam.
                       Back to 97
99Fruit with 5 or 6 valvesEucalyptus bosistoana
Fruit with 3 or 4 valves
                       Back to 98
100Adult leaves >1.5 cm wide101
Adult leaves <1.5 cm wide
                       Back to 99
101Disc depressed102
Disc flat
                       Back to 100
Eucalyptus fastigata
102Anthers versatile, reniform, dehiscing through confluent slitsEucalyptus obliqua
Anthers adnate, dehiscing through separate slits
                       Back to 101
103Adult leaves >2 cm wide; buds 5–9 mm longEucalyptus moluccana
Adult leaves <2 cm wide; buds 4–7 mm long
                       Back to 102
Eucalyptus microcarpa
104Fruit <7 m diam.105
Fruit >7 mm diam.
                       Back to 100
                       Back to 104
106Anthers versatile, reniform, dehiscing through confluent slitsEucalyptus paliformis
Anthers adnate, dehiscing through separate slits
                       Back to 105
Eucalyptus pilligaensis
107Adult leaves <1.0 cm wideEucalyptus viridis
Adult leaves >1.0 cm wide
                       Back to 105
Eucalyptus porosa
108Inflorescences 3-floweredEucalyptus triflora
Inflorescences 7-flowered
                       Back to 104
109Fruit urceolateEucalyptus fraxinoides
Fruit globose
                       Back to 108
Eucalyptus dendromorpha
110Disc flatEucalyptus oreades
Disc depressed
                       Back to 97
111Buds rounded; fruit >8 mm diam.112
Buds acute; fruit <8 mm diam.
                       Back to 110
112Anthers versatile, reniform, dehiscing through confluent slitsEucalyptus delegatensis
Anthers adnate, dehiscing through separate slits
                       Back to 111
Eucalyptus albens
113Anthers versatile, reniform, dehiscing through confluent slitsEucalyptus piperita
Anthers adnate, dehiscing through separate slits
                       Back to 111
Eucalyptus polybractea
114Stamens regularly inflexed115
Stamens irregularly flexed
                       Back to 88
115Adult leaves broad-lanceolate to ovate or elliptic116
Adult leaves linear to lanceolate, occasionally broad-lanceolate
                       Back to 114
116Fruit at least 6 mm long and 6 mm diam.Eucalyptus magnificata
Fruit usually <6 mm long and 6 mm diam.
                       Back to 115
117Adult leaves without loose white surface wax; coastal speciesEucalyptus baueriana
Adult leaves glaucous with loose white surface wax; tablelands and Western Slopes species
                       Back to 116
Eucalyptus polyanthemos
118Inflorescences 3-floweredEucalyptus longifolia
Inflorescences >3-flowered
                       Back to 115
                       Back to 118
120Fruit hemispherical to ovoid121
Fruit conical
                       Back to 119
Eucalyptus conica
121Outer stamens infertileEucalyptus rudderi
All stamens fertile
                       Back to 120
Eucalyptus intertexta
122Pith glands presentEucalyptus costata
Pith glands absent
                       Back to 119
123Disc broad, slightly depressedEucalyptus leptophylla
Disc narrow, steeply depressed
                       Back to 122
124Fruit 4-angledEucalyptus calycogona
Fruit smooth
                       Back to 123
Eucalyptus gracilis
125Buds and twigs glaucousEucalyptus nortonii
Buds and twigs non-glaucous
                       Back to 114
126Adult leaves narrow-lanceolate to lanceolate127
Adult leaves broad-lanceolate to ovate or ± elliptic, rarely lanceolate
                       Back to 125
127Fruit <5 mm diam.128
Fruit >5 mm diam.
                       Back to 126
128Anthers adnate129
Anthers versatile
                       Back to 127
129Juvenile leaves broad-lanceolate (coastal forest tree)Eucalyptus largeana
Juvenile leaves linear (far inland woodland tree)
                       Back to 128
Eucalyptus largiflorens
130Fruit hemispherical; adult leaves dullEucalyptus acaciiformis
Fruit conical; adult leaves glossy
                       Back to 128
Eucalyptus aggregata
131Fruit sessileEucalyptus goniocalyx
Fruit pedicellate
                       Back to 127
132Juvenile leaves greenEucalyptus retinens
Juvenile leaves glaucous
                       Back to 131
Eucalyptus volcanica
                       Back to 126
Eucalyptus behriana
134Anthers adnateEucalyptus populnea
Anthers versatile
                       Back to 133
Eucalyptus ovata
135Adult leaves strongly discolorous136
Adult leaves concolorous
                       Back to 70
136Fruit >10 mm diam.Eucalyptus scias
Fruit <10 mm diam.
                       Back to 135
137Calyptra about as long as hypanthiumEucalyptus notabilis
Calyptra much longer than hypanthium
                       Back to 136
Eucalyptus resinifera
138Fruit sessile139
Fruit pedicellate
                       Back to 135
139Inflorescences 3-flowered140
Inflorescences 7- or more-flowered
                       Back to 138
140Adult leaves opposite141
Adult leaves disjunct
                       Back to 139
141Fruit conicalEucalyptus cinerea
Fruit campanulate
                       Back to 140
Eucalyptus triplex
142Juvenile leaves greenEucalyptus badjensis
Juvenile leaves grey or blue
                       Back to 140
143Fruit ovoidEucalyptus chapmaniana
Fruit campanulate
                       Back to 142
144Branches smoothEucalyptus kartzoffiana
Branches with persistent fibrous bark
                       Back to 143
Eucalyptus alligatrix
145Peduncle <3 mm longEucalyptus banksii
Peduncle >3 mm long
                       Back to 139
146Fruit >6 mm diam.147
Fruit <6 mm diam.
                       Back to 145
147Adult leaves blue148
Adult leaves green
                       Back to 146
Eucalyptus goniocalyx
148Many adult leaves oppositeEucalyptus conspicua
Adult leaves disjunct
                       Back to 147
Eucalyptus nortonii
149Valves acuteEucalyptus quadrangulata
Valves obtuse
                       Back to 146
Eucalyptus macarthurii
150Calyptra >1.5 times as long as hypanthium151
Calyptra equal in length to hypanthium
                       Back to 138
151Disc raised152
Disc not raised
                       Back to 150
152Inflorescences 3-floweredEucalyptus morrisii
Inflorescences 7-flowered
                       Back to 151
Eucalyptus exserta
153Disc flatEucalyptus bakeri
Disc sharply depressed
                       Back to 151
154Mallees; inflorescences solitary155
Trees; inflorescences often paired
                       Back to 153
Eucalyptus squamosa
155Adult leaves opposite, ovate to broad-lanceolate or ellipticEucalyptus gillii
Adult leaves disjunct, lanceolate to broad-lanceolate
                       Back to 154
Eucalyptus socialis
156Inflorescences compoundEucalyptus coolabah
Inflorescences simple
                       Back to 150
157Inflorescences often paired158
Inflorescences solitary
                       Back to 156
158Calyptra scar presentEucalyptus squamosa
Calyptra scar absent
                       Back to 157
Eucalyptus fastigata
159Juvenile leaves linear160
Juvenile leaves broad-lanceolate or broader
                       Back to 157
160Disc level or raised161
Disc steeply depressed
                       Back to 159
Eucalyptus oleosa
161Bark shedding from bases of larger branchesEucalyptus smithii
Bark persisting to smaller branches
                       Back to 160
162Adult leaves mostly >1 cm wideEucalyptus corticosa
Adult leaves mostly <1 cm wide
                       Back to 161
Eucalyptus nicholii
163Buds glaucous164
Buds not glaucous
                       Back to 159
164Fruit 6–8 mm diam.Eucalyptus malacoxylon
Fruit 4–5 mm diam.
                       Back to 163
Eucalyptus nova-anglica
165Juvenile leaves green166
Juvenile leaves blue
                       Back to 163
166Fruit >5 mm diam.Eucalyptus angophoroides
Fruit <5 mm diam.
                       Back to 165
167Fruit conicalEucalyptus aggregata
Fruit hemispherical or rounded
                       Back to 166
Eucalyptus acaciiformis
168Juvenile leaves orbiculate169
Juvenile leaves narrow-elliptic
                       Back to 165
Eucalyptus ignorabilis
169Fruit >5 mm longEucalyptus bridgesiana
Fruit <5 mm long
                       Back to 168
Eucalyptus nova-anglica
170Valves of fruit enclosed171
Valves of fruit exserted
                       Back to 1
171Inflorescences compound172
Inflorescences simple
                       Back to 170
172Fruit conical or ovoid173
Fruit hemispherical
                       Back to 171
Eucalyptus michaeliana
173Stamens regularly inflexed, outer whorls infertileEucalyptus polyanthemos
Stamens irregularly flexed, all fertile
                       Back to 172
Eucalyptus dawsonii
174Fruit sessile175
Fruit pedicellate
                       Back to 171
175Inflorescences 3-flowered176
Inflorescences 7-flowered or more
                       Back to 174
176Adult leaves often opposite177
Adult leaves disjunct
                       Back to 175
177Opposite pairs of juvenile leaves fused at baseEucalyptus perriniana
Juvenile leaves free
                       Back to 176
178Adult leaves <10 mm wideEucalyptus recurva
Adult leaves >10 mm wide
                       Back to 177
Eucalyptus pulverulenta
179Fruit cylindrical or ovoid, disc flat or depressed; juvenile leavesEucalyptus glaucescens
Fruit campanulate, disc slightly raised; juvenile leaves <4 cm long and wide
                       Back to 176
Eucalyptus saxatilis
                       Back to 175
181Calyptra scar presentEucalyptus nitens
Calyptra scar absent
                       Back to 180
182Buds in stellate clusters183
Buds not in stellate clusters
                       Back to 181
183Juvenile leaves elliptic or orbiculateEucalyptus stellulata
Juvenile leaves narrow-elliptic
                       Back to 182
Eucalyptus copulans
184Adult leaf venation subparallel185
Adult leaves with a distinct midrib
                       Back to 182
185Fruit angularEucalyptus debeuzevillei
Fruit not angular
                       Back to 184
Eucalyptus niphophila
186Fruit broader than long; juvenile leaves greenEucalyptus kybeanensis
Fruit longer than broad; juvenile leaves blue
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Eucalyptus oreades
187Adult leaves often oppositeEucalyptus sturgissiana
Adult leaves disjunct
                       Back to 180
188Buds in stellate clusters189
Buds not in stellate clusters
                       Back to 187
189Juvenile leaves ovate to ellipticEucalyptus latiuscula
Juvenile leaves linear to lanceolate
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190Juvenile leaves lanceolate, adult leaves often >1 cm wideEucalyptus dissita
Juvenile leaves linear to narrow-lanceolate, adult leaves <1 cm wide
                       Back to 189*
191Adult leaves <6 cm longEucalyptus moorei
Adult leaves often >6 cm long
                       Back to 190
Eucalyptus serpentinicola
192Calyptra scar absentEucalyptus kybeanensis
Calyptra scar present
                       Back to 188
Eucalyptus dumosa
193Venation in adult leaves subparallel194
Venation in adult leaves not subparallel
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194Mallees; leaves lanceolate or narrowerEucalyptus gregsoniana
Trees; leaves lanceolate to ovate
                       Back to 193
195Internodes often >3 cm longEucalyptus lacrimans
Internodes <3 cm long
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196Buds strongly glaucousEucalyptus niphophila
Buds not strongly glaucous
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Eucalyptus pauciflora
                       Back to 193
198Adult leaves >1.5 cm wide199
Adult leaves <1.5 cm wide
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199Adult leaves with lateral veins strongly acute (<30° to midrib)Eucalyptus multicaulis
Adult leaves with lateral veins 30–50° to midrib
                       Back to 198
200Disc flatEucalyptus luehmanniana
Disc depressed
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201Buds glaucousEucalyptus stenostoma
Buds not glaucous
                       Back to 200
202Twigs wingedEucalyptus langleyi
Twigs not winged
                       Back to 201
203Juvenile leaves dull, subglaucous; adult leaves to 3.5 cm wideEucalyptus burgessiana
Juvenile leaves glossy green; adult leaves to 2.5 cm wide
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204Fruit 8–11 mm diam.Eucalyptus obstans
Fruit 3–5 mm diam.
                       Back to 203
Eucalyptus aenea
205Disc flat206
Disc depressed
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206Disc broadEucalyptus codonocarpa
Disc narrow
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207Leaves thickEucalyptus approximans
Leaves thin
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Eucalyptus microcodon
208Adult leaves <8 mm wide209
Adult leaves often >8 mm wide
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209Immature adult leaves pinkish grey; longest peduncles <8 mm longEucalyptus cunninghamii
Immature adult leaves green; longest peduncles >8 mm long
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210Largest fruit >8 mm diam.; leaves usually <9 cm long, if longer then >7 mm wideEucalyptus laophila
Largest fruit <8 mm diam.; longest leaves >9 cm long and <7 mm wide
                       Back to 209
Eucalyptus apiculata
211Fruit 3–5 mm diam.Eucalyptus aenea
Fruit 6–11 mm diam.
                       Back to 208
212Adult leaves <10 mm wideEucalyptus stricta
Adult leaves >10 mm wide
                       Back to 211
Eucalyptus spectatrix
213Calyptra scar absent214
Calyptra scar present
                       Back to 197
214Disc flat215
Disc not flat
                       Back to 213
215Adult leaves dull216
Adult leaves glossy
                       Back to 214
216Tablelands and Western Slopes speciesEucalyptus rossii
Coastal species
                       Back to 215
217Adult leaves <1.8 cm wideEucalyptus racemosa
Adult leaves >1.9 cm wide
                       Back to 216
Eucalyptus signata
218Fruit >7 mm diam.Eucalyptus haemastoma
Fruit <7 mm diam.
                       Back to 215
219Coastal species north from MorissetEucalyptus signata
Sydney region, Blue Mtns and south
                       Back to 218
Eucalyptus sclerophylla
220Fruit large (13–18 mm diam.), ribbedEucalyptus olsenii
Fruit small (4–10 mm diam.), not ribbed
                       Back to 214
221Anthers versatile, reniform, dehiscing through confluent slitsEucalyptus paliformis
Anthers adnate, dehiscing through separate slits
                       Back to 220
222Inflorescences 3-floweredEucalyptus leucoxylon
Inflorescences 7-flowered
                       Back to 221
Eucalyptus melliodora
223Juvenile leaves opposite for few pairsEucalyptus ovata
Juvenile leaves opposite for many pairs
                       Back to 213
224Buds rounded, outer calyptra not shedding cleanlyEucalyptus benthamii
Buds pointed, outer calyptra shedding cleanly
                       Back to 223
225Inflorescences 3-floweredEucalyptus wilcoxii
Inflorescences 7-flowered
                       Back to 224
226Fruit >5 mm diam.227
Fruit <5 mm diam.
                       Back to 225
Eucalyptus dorrigoensis
227Buds 4–5 mm diam.Eucalyptus cypellocarpa
Buds 2.5–3.5 mm diam.
                       Back to 226
Eucalyptus oresbia
228Calyptra >1.5 times as long as hypanthium229
Calyptra <1.5 times as long as hypanthium
                       Back to 170
229Buds glaucous230
Buds not glaucous
                       Back to 228
230Disc domed, >1.5 mm wideEucalyptus glaucina
Disc ± flat, <1.5 mm wide
                       Back to 229
231Calyptra cylindricalEucalyptus prava
Calyptra conical
                       Back to 230
Eucalyptus dealbata
232Calyptra cylindricalEucalyptus bancroftii
Calyptra conical or rostrate
                       Back to 229
233Calyptra rostrateEucalyptus camaldulensis
Calyptra conical
                       Back to 232
234Calyptra >2.5 times as long as hypanthium235
Calyptra 1.5–2 times as long as hypanthium
                       Back to 233
235Inflorescences >7-floweredEucalyptus amplifolia
Inflorescences 7-flowered
                       Back to 234
236Seeds black237
Seeds red
                       Back to 235
237Fruit >6 mm in diam.Eucalyptus tereticornis
Fruit <6 mm in diam.
                       Back to 236
Eucalyptus blakelyi
238Fruit >5 mm long, adult leaves lanceolateEucalyptus interstans
Fruit <5 mm long, adult leaves narrow-lanceolate
                       Back to 236
Eucalyptus seeana
239Juvenile leaves ovate to orbiculate240
Juvenile leaves narrow-lanceolate to lanceolate
                       Back to 234
                       Back to 239
Eucalyptus chloroclada
241Adult leaves penniveined, glossy; coastal speciesEucalyptus pumila
Adult leaves with open venation, dull; inland plains species
                       Back to 240
Eucalyptus vicina
242Trees; seeds redEucalyptus parramattensis
Mallees; seeds black
                       Back to 239
243Fruit >5 mm diam.Eucalyptus dwyeri
Fruit <5 mm diam.
                       Back to 242
Eucalyptus nandewarica
244Inflorescences 3-flowered245
Inflorescences 7- or more-flowered
                       Back to 228
245Fruit >10 mm diam.246
Fruit <10 mm diam.
                       Back to 244
246Peduncles >3 mm longEucalyptus pseudoglobulus
Peduncles <3 mm long
                       Back to 245
Eucalyptus bicostata
247Juvenile leaves broad lanceolate to ovate, to orbiculate or elliptic248
Juvenile leaves lanceolate
                       Back to 245
248Buds glaucous249
Buds not glaucous
                       Back to 247
249Juvenile stems roundedEucalyptus rubida
Juvenile stems markedly quadrangular
                       Back to 248
Eucalyptus canobolensis
250Juvenile leaves greyEucalyptus dalrympleana
Juvenile leaves green
                       Back to 248
251Calyptra as wide as hypanthiumEucalyptus imlayensis
Calyptra narrower than hypanthium
                       Back to 250
Eucalyptus baeuerlenii
252Calyptra narrower than hypanthiumEucalyptus wilcoxii
Calyptra as wide as hypanthium
                       Back to 247
Eucalyptus viminalis
253Adult leaves discolorous254
Adult leaves concolorous
                       Back to 244
254Disc raised or ± level255
Disc depressed
                       Back to 253
255Fruit >10 mm diam.Eucalyptus canaliculata
Fruit <10 mm diam.
                       Back to 254
256Valves apiculate, vertically raisedEucalyptus major
Valves obtuse, incurved
                       Back to 255
257Fruit <6 mm diam.Eucalyptus propinqua
Fruit 6–10 mm diam.
                       Back to 256
258Calyptra narrower than hypanthiumEucalyptus biturbinata
Calyptra as wide as hypanthium
                       Back to 257
Eucalyptus punctata
259Buds glaucous, valves broad-triangular, incurvedEucalyptus grandis
Buds not glaucous
                       Back to 254
260Adult leaves lanceolate; valves narrow-acuminateEucalyptus saligna
Adult leaves broad-lanceolate or broader; valves triangular, acute
                       Back to 259
261Calyptra rounded, pedicels <4 mm longEucalyptus brunnea
Calyptra pointed, pedicels >4 mm long
                       Back to 260
Eucalyptus deanei
262Adult leaves often opposite, <3 cm longEucalyptus parvula
Adult leaves disjunct, >3 cm long
                       Back to 253
263Inflorescences usually paired in leaf axilsEucalyptus pachycalyx
Inflorescences solitary in leaf axils
                       Back to 262
264Adult leaves broad-lanceolate or broader265
Adult leaves lanceolate or narrower
                       Back to 263
265Adult leaves rounded or mucronate266
Adult leaves acute
                       Back to 264
Eucalyptus ovata
266Petioles 6–11 mm long; adult leaves 1.2–3.5 cm wide; peduncles 3–9 mm longEucalyptus aquatica
Petioles 10–20 mm long; adult leaves 3.0–5.0 mm wide; peduncles 10–18 mm long
                       Back to 265
Eucalyptus camphora
267Bark shed in long ribbons268
Bark shed in scales
                       Back to 264
268Juvenile leaves ovate or broader269
Juvenile leaves lanceolate
                       Back to 267
269Buds glaucous270
Buds not glaucous
                       Back to 268
270Calyptra finely warty, apiculateEucalyptus maidenii
Calyptra smooth, not apiculate
                       Back to 269
Eucalyptus rubida
271Adult leaves apparently finely toothed; outer calyptra not shedding cleanlyEucalyptus denticulata
Adult leaves entire; outer calyptra shedding cleanly
                       Back to 269
Eucalyptus dalrympleana
272Calyptra scar present273
Calyptra scar absent
                       Back to 268
273Buds 4–7 mm long; pedicels 1–4 mm longEucalyptus nobilis
Buds 9–13 mm long; pedicels <2 mm long
                       Back to 272
Eucalyptus quinniorum
274Calyptra hemisphericalEucalyptus kybeanensis
Calyptra conical, acute
                       Back to 272
Eucalyptus deuaensis
275Juvenile leaves linear or lanceolate276
Juvenile leaves broad lanceolate to ovate, elliptic or orbiculate
                       Back to 267
                       Back to 275
277Bark irregularly shedding, patchy, not powderyEucalyptus parramattensis
Bark clean or lightly mottled, powdery
                       Back to 276
Eucalyptus mannifera
278Fruit >5 mm diam.Eucalyptus dwyeri
Fruit <5 mm diam.
                       Back to 276
Eucalyptus nandewarica
                       Back to 275
280Adult leaves penniveined, glossy; coastal speciesEucalyptus pumila
Adult leaves with open venation, dull; inland plains species
                       Back to 279
Eucalyptus vicina
281Juvenile leaves disjunctEucalyptus chloroclada
Juvenile leaves opposite for >10 nodes
                       Back to 279
282Juvenile leaves not crenate283
Juvenile leaves crenate, remaining opposite for several years
                       Back to 281
Eucalyptus dunnii
283Fruit <5 mm long and <5 mm in diam.284
Fruit 5 mm long and 5 mm in diam. or more
                       Back to 282
284Buds acute; outer calyptra shedding cleanlyEucalyptus dorrigoensis
Buds rounded; outer calyptra not shedding cleanly
                       Back to 283
Eucalyptus benthamii
285Fruit 5–6 mm longEucalyptus lactea
Fruit 6–8 mm long
                       Back to 283
Eucalyptus elliptica

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