Bursaria spinosa subsp. spinosa—Blackthorn—PITTOSPOSACEAE

Bursaria spinosa subsp. spinosa

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Habitat—Grows in dry to wet sclerophyll forest and margins of Sub Tropical and Dry Rainforest, often on non–siliceous soils; sometimes a weed on cleared land.

Distribution— North From Tasmania, through Victoria, occurring throughout eastern parts of New South Wales and into Queensland. Also in South Australia.

Description—Small tree or tall shrub, 5 to 10 m high; seedling stems initially with hairs erect and sometimes rigid with resin, later more or less appressed; new adult shoots with hairs appressed, glabrescent, usually spinose.

Local occurrences

Barrington Tops National Park, Cattai Wetlands, Copeland Tops State Conservation Area, Ellenborough Falls, Myall Lakes National Park and Tapin Tops National Park

Leaves.—Adult leaves often clustered at nodes, becoming alternate, linear to narrowly ovate, to obovate or cuneate, 23 to 43 mm long, 5 to 9 mm wide, margin thick, slightly down–turned; apex rounded to slightly notched with mucro, glabrous or almost so.

Bursaria spinosa subsp. spinosa
Bursaria spinosa subsp. spinosa

Inflorescence.— Terminal pyramidal panicles 10 to 25 cm long, or occasionally in axillary clusters. Flowers numerous, aromatic, bisexual. Flowers with sepals c. 1.5 mm long; petals 3.5 to 6 mm long, white or cream–coloured.

Flowering.—Spring to Summer

Fruit.— Numerous, flattened capsules, 5 to 7 mm long, 7 to 9 mm wide; seeds 1 to 3 per locule, c. 5 mm long, with distinct wings along margin.

Ripe.—Summer to Autumn

Bursaria spinosa subsp. spinosa