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Xanthosia tridentata DC.
Family Apiaceae
Common name: Rock Xanthosia

Xanthosia tridentata DC. APNI*

Description: Erect or ascending subshrub to 30 cm high; branches slender and diffuse, usually 10–20 cm long, hirsute or ± glabrous, younger parts sparsely stellate-hairy.

Leaves cauline, cuneate, 7–23 mm long, 3–15 mm wide, apex 3-notched, base narrowed, margins ± recurved, upper surface glabrous or sparsely hairy, lower surface whitish tomentose.

Inflorescence terminal and leaf-opposed, umbels irregularly compound; mostly 2–6-flowered; peduncles 2.5–12 mm long; bracteoles petaloid, green or green with red tinges, linear to ovate, 3.5–4 mm long. Sepals c. 1.7 mm long, peltate. Petals c. 1 mm long, white. Stylopodium glabrous.

Fruit 3–3.5 mm long, mericarps 9-ribbed.


Flowering: Flowers August–April

Distribution and occurrence: Grows in heath, dry scrub and eucalypt woodland on skeletal sandy soils over sandstone and shale, south from Forster and Mt White.
NSW subdivisions: NC, CC, SC, CT, ST
Other Australian states: Vic. Tas.
AVH map***

Text by J.M. Hart & M. Henwood
Taxon concept: J. M. Hart & M. Henwood, 2002

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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