Herba undique nisi corolla laxe et longe albo-villosa. Cattles florentes (annui e radice perenni ?) erecti, stricti, simplices, ad 0-5 m. alti, 4-goni, irregulariter sulcati, dense foliosi. Folia trifoliolata (exstipulata ?), petioli ad 1 cm. long!, supra sulcati; foliola elliptico-oblonga vel lanceolata, utrinque angustata aut apiculata, terminalia ad 5 cm. longa, 8-11 mm. lata, lateralia paulo breviora, medio costata, sicco subnigra, chartacea, longe laxeque ciliata. Capitulum terminale, solitarium, liemisphaericum, subnudum, compacte 25-30-florum, circiter 4 cm. diametro. Flores pedicellati, flavidi (fide Wylie); pedicelli filiformes, 0’4-1 cm. longi; bracteola lineari-subulata, ad 4 mm. longa. Calyx 7 mm. longus, 10-12 nervatus, extra parce pilosus, supra medio fissus, lobis subulatis inter se subaequalibus. Vexillum unguieulatum, spatulatum, in toto 10-12 mm. longum, lamina 8 mm. longa, 2-5 mm. lata, acuta, basi leviter truncata, dorso parce sericea, mox glaberima; alae vix curvatae, in toto 10 mm. longae, limbo 3 mm. lato obtuso sagittato extra parcissime pubescente; carina alis similis sed paulo longior et angustior. Ovarium complanatum, falcato-oblongum, 7 mm. longum, stylum valde curvatum aequans, glaberrimum, fuscum.
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