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Sida sp. tiny glabrous fruit (A.A. Mitchell PRP1152)

This name is not current. Find out more information on related names.

Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Not Current

Prostrate perennial, herb, 0.02 m high. Margin of grove in hardpan plain.

Helen Coleman, Descriptive Catalogue, 2 June 1998
Image

Scientific Description

Herb or shrub, with hairy stems. Leaves 6-35 mm long, 2-13 mm wide, not lobed; margins entire; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves, 3-10 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 3-6.5 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx green, 2.8-3.5 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs absent. Corolla yellow, 3.2-4.5 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.2-0.5 mm long; anthers 0.2-0.3 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 1.5-2.3 mm long, with five or numerous style branches or lobes, mostly glabrous, wing absent. Fruits indehiscent and splitting into sections (schizocarps), length-width ratio more or less as long as wide, mericarps wrinkled, hairs and scales absent; apex rounded; prickles absent (except perhaps a terminal awn); terminal awns or spines absent; calyx persistent to mature fruit; carpels 5; seeds per loculus 1. Flowering time April, May or August. Distribution Botanical Province Eremaean, IBRA Bioregion Pilbara, Gascoyne, Little Sandy Desert and Gibson Desert.