Hibiscus brachysiphonius F.Muell.

Scientific Description

Shrub, with glabrous stems. Leaves 25-45 mm long, 8-30 mm wide, palmately lobed, simply (once-)lobed; margins crenate; hairy, with Simple hairs (without tubercle bases)with scales absent, Sessile glands absent; stipules present and persistent to older leaves or present but early deciduous (only visible on youngest leaves), 7-12 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 15-30 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 8-10 mm long, the lobes free, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx green, 12-15 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) present, stellate hairs absent, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs absent. Corolla pink, 16 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 5 mm long; anthers 0.6 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs or scales present, simple hairs absent, stellate hairs present, gland-tipped hairs absent; style 1, 7 mm long, with five or numerous style branches or lobes, mostly glabrous, wing absent. Flowering time August, September or October. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Tanami, Pilbara, Carnarvon and Ord-Victorian-Plain.