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FOC | Family List | FOC Vol. 10 | Fabaceae | Astragalus

149. Astragalus rytidocarpus Ledebour, Fl. Altaic. 3: 315. 1831.

橙果黄耆 cheng guo huang qi

Plants 8-18(-30) cm tall, covered with hairs 0.1-0.3 mm. Stems mostly several, base mostly densely and middle and upper part loosely hairy; hairs subappressed to ascending, white, at nodes also black. Leaves 4-6 cm; stipules 2-3 mm, shortly to distinctly connate behind stem and partly around peti­ole, with white and sometimes also with black hairs; petiole 0.8-2.5 cm, like rachis loosely white hairy; leaflets in 4 or 5 pairs, linear, 8-20 × 1.5-2.5 mm, abaxially somewhat densely and adaxially loosely covered with appressed white hairs, apex obtuse to very narrowly retuse. Racemes 1-2 cm, densely many flowered; peduncle 3-7 cm, loosely white and black hairy; bracts whitish, 1-1.5 mm, white and predominantly black hairy. Calyx 2.5-3 mm, loosely to rather densely covered with some­times partly very short (less than 0.05 mm) appressed black hairs; teeth 0.8-1 mm. Petals pale violet; standard widely ellip­tic to suborbicular, 6-6.5 × 4-4.5 mm, apex retuse to emargi­nate; wings 4.5-5 mm, limbs bilobed; keel 4-4.5 mm. Legumes sessile, erect or obliquely spreading, obliquely ovoid to nearly globose, 4-5 mm, 3-4(-4.5) mm high and wide, slightly keeled ventrally, deeply grooved dorsally, retuse at apex, with a ± straight beak 1.5-2 mm, 2-locular; valves strongly cross-wrinkled, loosely covered with short, subappressed, black and white hairs. Seed 1 in each locule.

Gansu [Mongolia, Russia (Siberia)].


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