Didymocarpi. 284 
3A2B. Pods conspicuously ‘longer than calyx, smooth, ribbed, 
appearing a little inflated, inclined to be notched at both 
ends, sessile, rather wider than long. Mexican perennials or 
winter annuals with rather woody stems late in the season. 
Pods about round. 271 diphacus 
Pods oblately oval-ovate. 272 Angelinus- 
3A3B. Pods smooth, stipitate, reflexed. Texan. 
Pods about reniform. 273 Brazoensis. 
266. Astragalus reflexus T. & G. Fl. 1 334 (1838). Pods 
about 7 mm. long, oblong-ovate, sharply acute, about twice as long 
as wide, widely sulcate dorsally, flat ventrally and with suture 
raised, with rounded sides, smooth, 4 mm. wide and 2 mm. high. . 
Flowers reflexed, purple, nearly sessile, several in a loose head, 
about 7 mm. long. Banner narrow, arched abruptly at calyx tips to 
erect, 2-3 mm. longer than keel. Wings much shorter than keel, 
broad. Keel with straight base and then produced into a narrowly 
triangular, ascending and very acute beak. Calyx tube about 1 
mm. long, campanulate, acute at base, with broad sinuses and teeth 
subulate and about as long as tube. Bracts subulate, about 2 mm. 
long. Pedicels evident but very short. Peduncles longer than the 
leaves 3-6 cm. long. Leaves 3-6 em. long, the uppermost nearly 
sessile, the lowest half petiole. Leaflets about 6 pairs, 4-8 mm. long, 
about obovate, not contiguous, strongly petiolulate, truncate to'a 
little notched. Stems straggling, about a foot long or less. Stip- 
ules rather large, 3-5 mm. long, ovate or broader. Whole plant 
nearly smooth except the calyx. Central Texas. 
267. Astragalus nigrescens Nutt. Pl. Gambel 152 (1848). 
A. Gambellianus Sheldon. Hesperastragalus Heller. Pods 3-4 mm. 
as long M nos 
