|Pelargonium luteum (Andr.) G. Don
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Gen. Syst. Gard. Bot. 1 (1832) 726.
Deciduous geophyte 110-200 mm tall when in flower, tuber turnip-shaped or elongated.
Lamina elliptic in outline, 50-120 mm long, irregularly pinnate to bipinnatisect, pinnae 10-40 mm long, incised, segments laciniate, adaxially and abaxially hirsute with appressed hairs and sparsely interspersed with glandular hairs. Petiole 20-80 mm long, rigid, erecto-patent, covered with glandular hairs interspersed with appressed stiff hairs. Stipules subulate, adnate to petioles for half to almost their total length.
Scape, bearing 4-9(-12) pseudo-umbellets, each 6-16(-20)-flowered. Peduncles with appressed curly hairs interspersed with long glandular hairs. Pedicel cca. 0.5 mm.
5, lanceolate, apices acute, 6-8 x 1-3 mm, posterior one erect, others recurved, reddish green, margins white. Hypanthium 20-33 mm, reddish green, indumentum as on peduncle.
5, yellow, patent during anthesis, posterior two with pale pink or V-shaped markings, ligulate to spathulate, bases cuneate, apices rounded or emarginate, recurved, 11-15 x 2-2.5 mm. Anterior three ligulate, bases attenuate, apices rounded or obtuse, 11-15.5 x 2-2.5 mm.
5 fertile, posterior one 3-4 mm, lateral two 5.5-7.5 mm, anterior two 7-9 mm long, filaments of lateral and anterior ones twisted so that pollen surfaces of anthers are turned to the front.
P. luteum is found in a small area around Calvinia and Nieuwoudtville, in rocky places with sand amid karooid vegetation, and flowers in October and November. On the above hill it grows on the southern slope close to a small population of P. punctatum on the hilltop, and beneath large shrubs of P. antidysentericum ssp. inerme.
Marais E. M. (1997).
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