Sida sp. Western sand dunes (P.K. Latz 11980)

Scientific Description

Herb or shrub, with hairy stems. Leaves 25-50 mm long, 10-20 mm wide, not lobed; margins serrate; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves, 13-17 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 6-9 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent, Sessile glands absent. Calyx green, 7-8.2 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, 5.5-8 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 1-1.5 mm long; anthers 0.6-0.7 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 2.8-4 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 or scales present, simple hairs (without tubercle bases) absent, stellate hairs present, Sessile glands absent, tubercle-based simple hairs absent, gland-tipped hairs absent, 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 June. Distribution Botanical Province Eremaean, IBRA Bioregion Great Sandy Desert, Gascoyne, Little Sandy Desert, Gibson Desert and Central Ranges.