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Commersonia breviseta C.F.Wilkins & L.M.Copel.
Family Malvaceae
Commersonia breviseta C.F.Wilkins & L.M.Copel. APNI*

Description: Shrub, erect, 1–3 m high.

Mature leaves mainly narrowly-elliptic or ovate, 8–24 mm long, 1.5–7.5 mm wide; base scarcely oblique, cordate or obtuse; margins irregularly toothed, recurved; apex rounded-acute or obtuse; lower surface densely hairy to tomentose with sessile stellate hairs, clavate glands present or absent; upper surface slightly rugose, with dense, white, sessile, stellate hairs, above smaller hairs and medium density orange-red tipped glands; juvenile leaves conspicuously tri-lobed, 45–110 mm long, 20–45 mm wide; petiole 1–6 mm long.

A leaf-opposed cyme, 8–35 mm long, flowers 4–16. Calyx 3.4–6.3 mm long. Petals 2.3–3.4 mm long and 1.7–2.7 mm wide, pinkish. Staminodes five, one inserted between each stamen. Anthers dark red.

Capsule loculicidal, ellipsoid, brown, 4.3–5.5 mm diam., with scattered to moderately dense stellate hairs.


Illustration
I. Telford

Type
Specimen

Flowering: Flowers have been observed from September to November.

Distribution and occurrence: Commersonia breviseta is widespread in eastern Australia ranging from Giraween National Park in far southern Queensland to Genoa in far north-eastern Victoria. Most populations occur along the Great Dividing Range although some collections are recorded from coastal areas at lower elevations.

Occurs in rocky areas with shallow soils, on a wide range of rock types, in heath or shrubby woodland; widespread.
NSW subdivisions: NC, CC, SC, NT
Other Australian states: Qld Vic.
AVH map***

Commersonia breviseta has been widely collected since Mueller’s first collection in 1860 at Yowaka River. It is widespread in eastern New South Wales, but is known from single, small populations in Queensland and Victoria. It occurs in numerous reserved areas such as Girraween, Washpool, Gibraltar Range, New England, Mt Kaputar and Deua National Parks as well as Torrington State Conservation Area. In most populations the total number of plants is relatively low, however, this species is not considered to be under threat at this time.

Text by Louisa Murray
Taxon concept: Telopea 12 (1): 2008, pages 65-66.


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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