Brachychiton tridentatus Guymer

Scientific Description

Tree, with glabrous stems. Leaves 110-250 mm long, 100-370 mm wide, not lobed or tripartitely lobed, simply (once-)lobed; margins entire; hairs and scales absent (leaves quite glabrous) or hairy, with Simple hairs (without tubercle bases), with stellate hairswith scales absent, Sessile glands absent; stipules present but early deciduous (only visible on youngest leaves). Perianth of one whorl only (the visible whorl is a calyx, sometimes petaloid). Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx green, pink or red, 18-30 mm long, the lobes fused half or more of their length, Sessile glands absent, stellate hairs present, scales absent, Terminal appendages absent, number of ribs absent. Stamens many, united and arising from a staminal tube around the style; anthers 1.5 mm long, indumentum absent (anthers glabrous). Staminodes present, appendages absent. Fruits indehiscent and splitting into sections (schizocarps), length-width ratio at least 1.5 times as long as wide, mericarps smooth, hairs and scales absent; apex rounded; prickles absent (except perhaps a terminal awn); terminal awns or spines absent; calyx deciduous before maturity, not accrescent; carpels 5; seeds per loculus 2-4 or ≥5. Flowering time June, July, August or September. Distribution Botanical Province Northern, IBRA Bioregion North Kimberley. Conservation Code Priority Three (P3).