Lawrencia sp. Mulein Station (Setter 317)

Scientific Description

Shrub, with glabrous stems. Leaves 15-25 mm long, 1.5-8 mm wide, not lobed or tripartitely lobed, simply (once-)lobed; margins entire; hairs and scales absent (leaves quite glabrous), Sessile glands absent; stipules present and persistent to older leaves. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 1.5-2 mm long; indumentum present, with absent, with stellate hairs present, with gland tipped hairs absent, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx 6-7.6 mm long, the lobes fused half or more of their length, scales absent, Terminal appendages absent, number of ribs absent. Corolla yellow, 7-7.6 mm long, glabrous, scales absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 1.4-1.5 mm long; anthers 1.3-1.5 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 5-8 mm long, with two or numerous style branches or lobes, mostly glabrous, wing absent. Flowering time August, September or October. Distribution Botanical Province Eremaean or South-West, IBRA Bioregion Great Sandy Desert, Central Ranges, Murchison, Coolgardie and Mallee.