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Dodonaea viscosa Jacq.
Family Sapindaceae
Common name: Sticky Hop-bush

Dodonaea viscosa Jacq. APNI*

Description: Spreading or erect shrub or tree to 8 m high.

Leaves simple, linear to obovate, 1–15 cm long, 1–40 mm wide, apex obtuse to acuminate, base attenuate to cuneate, margins entire to irregularly sinuate or toothed, glabrous; sessile or petiolate.

Flowers in terminal panicles; pedicels 3–9 mm long. Sepals 3 or 4, lanceolate to ovate, not persistent. Ovary pubescent or glabrous.

Capsule (for all taxa except for subsp. viscosa) 3- or 4-winged, 8.5–28 mm long, 11–28 mm wide, glabrous; wings 3–10 mm wide.


Illustration
Jill Curtis

Habit
Photo L. von Richter

Flower
Photo Tanja Lenz

Fruit
Photo J. Plaza

Distribution and occurrence:
NSW subdivisions: NC, CC, SC, NT, CT, ST, NWS, CWS, SWS, NWP, SWP, NFWP, SFWP, LHI
Other Australian states: Qld Vic. Tas. N.T. S.A. W.A.
AVH map***

Text by P. G. Wilson & J. A. Scott
Taxon concept:

 Key to the subspecies 
1Leaves elliptic, rarely ± obovate, 20–40 mm wide, with length:breadth ratio of 3–4:1; capsule 2- or rarely 3-winged, ± circular in lateral view; body of carpel (excluding wing) >7 mm wide. Dense spreading shrub to 2 m high. Leaves 7–13 cm long, apex broad-acute or obtuse, margins irregularly sinuate; petiole 2.5–6 mm long. Capsule 15–23 mm long, 20–25 mm wide; wings 4–4.5 mm wide. Coastal situations on sand, north from Port Macquarie district NC; Qld, trop.subsp. viscosa
Leaves variable, rarely elliptic, 1–25 mm wide, with length:breadth ratio of usually >4:1; capsule 3- or 4-winged, broad-elliptic to transverse-elliptic in lateral view; body of carpel (excluding wings) <6 mm wide.2
2Leaves linear, lanceolate to narrow-elliptic or rarely oblanceolate, with length:breadth ratio of 5–15:1, rarely to 30:1.3
Leaves obovate to spathulate or cuneate to angular-obovate, with length:breadth ratio of usually <6:1.
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6
3Leaves lanceolate to narrow-elliptic, >10 mm wide. Large shrub or small tree to 6 m high. Leaves mostly 7–12 cm long and 14–23 mm wide, apex acute; petiole 6–18 mm long. Capsule 3- or 4-winged, 8.5–20 mm long, rarely to 28 mm, 11–22 mm wide, rarely to 28 mm; wings 3–6 mm wide, rarely to 10 mm. Grows in wet sclerophyll forest, often on rocky slopes, chiefly in coastal sites north from Wooli (Grafton district), also recorded near Tenterfield. NC NT; LHI, Qld, trops.subsp. burmanniana
Leaves linear-lanceolate, linear to narrow-oblong or rarely oblanceolate, <10 mm wide.
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4
4Leaves linear-lanceolate, narrowly tapered at apex and base; petiole 6.5–18 mm long. Compact shrub to 5 m high. Leaves mostly 6–13 cm long, 5–10 mm wide, apex acute to acuminate, base narrow-attenuate; petiole 6.5–18 mm long. Grows in dry sclerophyll forest or woodland, often in rocky areas; chiefly on the Slopes and Tablelands. NC CC SC NT CT ST NWS CWS NWP; Qld, Vic., Amer., Afr., Asia, Pac. [D. viscosa var. angustifolia]subsp. angustifolia
Leaves linear to narrow-oblong, rarely oblanceolate, not narrowly tapered at apex, sessile or petiole 1–10 mm long.
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5
5Leaves 1–6 mm wide, with length:breadth ratio of >7.5:1, linear to narrow-oblong, rarely oblanceolate, sessile. Erect shrub to 4 m high. Leaves 3–9.5 cm long, 1–6 mm wide, apex acute to obtuse, margins irregularly sinuate or toothed. Grows in woodland, chiefly in arid and semi-arid areas; west from Armidale, Bowral and Cooma districts. NT CT ST NWS CWS SWS NWP SWP NFWP SFWP; Qld, Vic., N.T., S.A., W.A. [D. angustissima DC., D. attenuata A. Cunn.]subsp. angustissima
Leaves 6–16 mm wide, with length:breadth ratio of <7.5:1, usually obovate to spathulate or sometimes oblanceolate, sessile or tapering to petiole 1–10 mm long.
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subsp. spatulata
6Leaves cuneate to angular-obovate or narrow-obovate; lamina 1.2–3 cm long, usually with length:breadth ratio of <3.5:1, apex truncate or obtuse, shortly apiculate or sometimes irregularly 2- or 3-toothed, rarely emarginate. Compact spreading shrub to 3 m high. Leaves 1.2–3 cm long, 4–9 mm wide, rarely to 12 mm wide, margins entire to irregularly sinuate; sessile or shortly petiolate. Grows in mallee scrub in semi-arid areas, and open forest, mostly on sandy loams; widespread in inland districts. NC CC CT CWS SWS NWP SWP NFWP; Qld, Vic., S.A. [D. cuneata Sm.]subsp. cuneata
Leaves obovate to spathulate; lamina 2.3–7.5 cm long, usually with length:breadth ratio of >3.5:1, apex mucronate or broad-acute to obtuse or sometimes shortly apiculate.
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7
7Leaves 10–25 mm wide, apex mucronate; petiole 3.5–20 mm long. Erect to spreading shrub to 4 m high. Leaves 2.5–6 cm long, 10–25 mm wide, margins entire to irregularly sinuate, base broad-attenuate. Grows on rocky hills and ranges and in associated creeks in arid areas; west from Mudgee district. NWS CWS NWP SWP NFWP; Qld, N.T., S.A., W.A.subsp. mucronata
Leaves 6–16 mm wide, apex broad-acute to obtuse, sometimes shortly apiculate; petiole 0–10 mm long. Erect to spreading shrub 1.5–4 m high. Leaves 2.3–7.5 cm long, 6–16 mm wide, margins entire to irregularly sinuate or toothed. Grows in high-rainfall areas in open forest and mallee shrubland. Leaf morphology is extremely variable, with leaf characters intergrading with those of subsp. angustissima, subsp. cuneata and subsp. mucronata. All divisions except SC and SFWP; Qld, Vic., Tas., S.A., W.A. [D. viscosa var. arborescens (Hook.f.) Sherff]
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subsp. spatulata

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.
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