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Common name: green wattle, blueskin
Acacia irrorata Sieber ex Spreng. APNI*
Synonyms: Racosperma irroratum (Sieber ex Spreng.) Pedley APNI*
Racosperma irroratum (Sieber ex Spreng.) Pedley APNI*
Acacia pauciglandulosa F.Muell. APNI*
Description: Erect shrub or tree 4–12 m high; bark smooth or sometimes finely fissured, green to dark grey or black; branchlets angled to terete with ridges, yellow- to whitish-hairy (similar indumentum on leaf axes).
Leaves with petiole 0.7–2 cm long, glands absent or 1 gland at base of or below lowest pair of pinnae; rachis 2–12.5 cm long, hairy, jugary glands usually present at upper 1–4 pairs of pinnae, interjugary glands absent; pinnae 5–21 pairs (sometimes up to 26 pairs), 1.5–5 cm long; pinnules 15–72 pairs, oblong to narrowly oblong, 2–5 mm long, 0.4–0.7 mm wide, with fine hairs on margins and sometimes partly beneath.
Inflorescences in axillary and terminal racemes and panicles; peduncles 2–7 mm long, often golden-hairy; heads globose, 15–50-flowered, 5–7 mm diam., pale yellow to cream-coloured.
Pods straight to slightly curved, sometimes twisted, ± flat, submoniliform, 2–12 cm long, 5–11 mm wide, leathery, with minute yellow or white hairs; seeds longitudinal; funicle filiform.
Distribution and occurrence: chiefly on the coast and ranges, north from Bermagui.
Grows in dry or wet sclerophyll forest and on the margins of rainforest, often near watercourses.
NSW subdivisions: NC, CC, SC, NT, CT, ?NWS, CWS
Other Australian states: Qld
The name means ‘to bedew’, as if covered with dew (T.M. Tame, Acacias of Southeast Australia, 1992).
Text by P.G. Kodela
Taxon concept: P.G. Kodela & G.J. Harden (2002)
| ||Key to the subspecies|| |
|1||Jugary glands present mostly at terminal and occasionally at basal pair of pinnae, sometimes also at base of upper 2–4 pairs of pinnae; branchlets (especially the ridges), petioles and rachises warty (bearing stiff, mostly spreading hairs) intermixed with often ± appressed hairs; pinnules and pods mostly with appressed straight to slightly curved hairs; young foliage tips golden or greenish yellow. Flowers Nov.-Jan., sometimes Apr.-Aug.||subsp. irrorata|
|Jugary glands present at uppermost 1–4 pairs of pinnae and occasionally at basal pair of pinnae; branchlets, petioles and rachises with crisped hairs (juvenile plants warty); pinnules and pods with ± appressed to spreading curved or crisped hairs; young foliage tips orange-golden. Flowers recorded Dec.-Mar.||subsp. velutinella|
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.