Sida picklesiana A.S.Markey, S.J.Dillon & R.M.Barker

Scientific Description

Herb or shrub, with glabrous stems. Leaves 10-45 mm long, 10-34 mm wide, not lobed; margins entire; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present but early deciduous (only visible on youngest leaves), 0.5-4 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 0.4-3.5 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx green, 3-5 mm long, the lobes fused half or more of 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, 4-8 mm long, glabrous. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.3-1 mm long; anthers 0.5-1 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 2-2.8 mm long, with five 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 or hairs and scales absent, 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, not accrescent. Flowering time April, August or November. Distribution Botanical Province Eremaean, IBRA Bioregion Gascoyne and Murchison. Conservation Code Priority Three (P3).