Common name: Mountain Water Gum, Hill Kanuka
Tristaniopsis collina Peter G.Wilson & J.T.Waterh. APNI* 
Description: Shrub or tree to over 30 m tall with fibrous, persistent bark.
Leaves narrow-elliptic, usually 4–9.5 cm long, 10–25 mm wide, apex acuminate, upper surface green and glabrous, lower surface yellowish and glabrous; oil glands numerous, dense; petiole 2–6 mm long.
Inflorescences triads or dichasia, 3–7-flowered. Sepals narrow-triangular. Petals circular, mostly 2.5–3 mm long, 2–2.5 mm wide, yellow. Stamens mostly 10–18 per fascicle, about as long as the petals.
Capsule 6–8 mm long, 3–6 mm diam.; seeds winged, 5–6 mm long.
Flowering: December–January
Distribution and occurrence: Grows along rainforest margins and in moist situations in sclerophyll forest, rarely beside streams; north from Narooma.
NSW subdivisions: NC, CC, SC, NT, CT, ST
Other Australian states: Qld
Text by Peter G. Wilson
Taxon concept: Flora of NSW 2 (1991)
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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