Pelargonium ribifolium Jacq.

Erect, much-branched, aromatic shrub, up to 2 m high and 1 m in diameter. Stems herbaceous when young but soon becoming woody, hirtellous and densely interspersed with glandular hairs, green. Leaves sparsely hirtellous to hirtellous and densely interspersed with glandular hairs, light green; lamina 3(-5)-palmatilobate to 3(-5)-palmatifid, base mostly cordate, apices of lobes mostly obtuse (rarely acute), margins dentate, (25-)40-50(-90) x (30-)50-60(-100) mm; petiole (20-)40(-100) mm long; stipules triangular to cordiform, acuminate, 5-11 x 2-8 mm. Inflorescence: flowering branches profusely branched, with normal and smaller foliar leaves; peduncles 30-40 mm long, hirtellous and densely interspersed with glandular hairs; involucral bracts lanceolate, acuminate, indumentum as on peduncles, 5-7 x 1-2 mm; pseudo-umbels with 6-12 flowers each. Pedicel 7-10 mm long, indumentum as on peduncles. Hypanthium 6-8 mm long, prominently thickened at the base. Sepals lanceolate, indumentum abaxially as on peduncles, green with a reddish tint, ±10 x 2-5 mm. Petals white, posterior two obovate to obcordiform, apices obtuse to emarginate, with wine-red markings, reflexed at more than 90°, ±17 x 11 mm; anterior three narrowly spathulate with narrow claws, occasionally with thin wine-red lines near bases, reflexed at less than 90°, ±13 x 3 mm. P. ribifolium flowers sporadically throughout the year, but especially during the spring months of September to November, with a peak in October.