Pelargonium patulum Jacq.

Perennial, herbaceous, much-branched subshrub, up to ±0.3 m high and 0.4 m in diameter. Stems smooth, herbaceous except woody base of main stem, often slender and trailing, glabrous, green to glaucous but becoming brown with age. Leaves simple, glabrescent to sparsely covered with short to long rigid hairs, green to glaucous, sometimes with a purple to wine-red zone, margin sometimes red; lamina cordiform in outline, often 3-5-palmati-lobate to 3-5-palmatisect, (13-)20-40(-63) x (15-)20-43(-67) mm, apex obtuse to acute, base cordately incised, margin irregularly dentate to deeply incised, glabrous or with short rigid hairs or with long soft hairs; petiole relatively long, (25-)50-160(-180) mm long; stipules narrow to broad lanceolate, 5-14 x 1.5-8 mm, green or glaucous or reddish-green with red apices and margins, glabrous but margins with short rigid hairs. Inflorescence: flowering branch with smaller sessile foliar leaves; peduncle 10-76 mm long, glabrous; reduced pseudo-umbels with (1-)2-3 flowers each. Pedicel 4-30 mm long, glabrous. Hypanthium 11-26 mm long, glabrous. Sepals 5, lanceolate, often glabrous but apices pubescent, sometimes with rigid hairs abaxially, green or glaucous or reddish-green, ±5-7 x 1-2.5 mm. Petals 5, white or pale pink to pink, narrowly spathulate to spathulate; posterior two with long claws, 14-21 x 3-6 mm, re-flexed at ±90°, with wine-red markings; anterior three with shorter claws, 11-18.5 x 3-4 mm, gradually recurved, with a reddish line near bases. Stamens 6 ex 1 fertile (4 long, 0 or 1 medium, 2 short), 3 or 4 staminodes, bases of filaments fused, pollen orange. Gynoecium: Ovary ovoid, 5-lobed, densely pilose; style short, 2-3 mm long, reddish, glabrous; stigma with 5 recurved branches, wine-red. Mericarps: bases 4-6 mm long, tails 20-38 mm long.