Tristaniopsis collina—Mountain Water Gum, Hill Kanuka—MYRTACEAE

Tristaniopsis collina

Link to Images on Flickr.

Habitat—Grows along Rainforest margins and in moist situations in sclerophyll forest, rarely beside streams.

Distribution— North from Narooma in New South Wales and to the McPherson Range in Queensland.

Description— Shrub or tree to over 30 m tall with fibrous, persistent bark.

Local occurrences

Barrington Tops National Park, Ellenborough Falls, Myall Lakes National Park, Royal Botanic Gardens Sydney and Tapin Tops National Park

Leaves.—Simple, alternate, entire, oil dots medium–sized to large; narrow–elliptic, usually 4 to 9.5 cm long, 10 to 25 mm wide, apex acuminate, upper surface green and glabrous, lower surface yellowish and glabrous; oil glands numerous, dense; petiole 2 to 6 mm long.

Tristaniopsis collina
Tristaniopsis collina

Inflorescence.—Triads or dichasia, 3 to 7–flowered. Sepals narrow–triangular. Petals circular, mostly 2.5 to 3 mm long, 2 to 2.5 mm wide, yellow. Stamens mostly 10 to 18 per fascicle, about as long as the petals.

Flowering.—Mainly December to January

Fruit.—Capsule 6 to 8 mm long, 3 to 6 mm diam.; seeds winged, 5 to 6 mm long.

Ripe.—Late Winter to early Spring

Tristaniopsis collina