Ocreati. 240 



A2B. Calyx tube conspicuously long-hairy and shaggy; teeth 

 and bracts very long. Flowers purple. Blooming in May. 



Whole plant appresseil-silvery-silky. 202 argillosus. 



2A. Pubescence attached by the base. Peduncles long, with small 

 flowers in narrow spikes which become racemose in fruit. Pods 

 not splitting the calyx. Stipules small and united only below. 

 Bracts 2-5 mm. long. Stems slender or almost none, nearly 

 erect, flexuous, with very short internodes below. This grows 

 on limestone cliffs and in sandy washes. 



Sutures not thick. Peduncles filiform and rush-like. 203 Moencoppensis. 

 Sutures thick. Peduncles not elongated. 204 troglodytes. 



200. Astragalus sophoroides Jones Zoe 2 12 (1891). Pods 

 with ventral suture little raised, not very conspicuously thickened, 

 arched, .5-9 mm. long, not 2 mm. thick, greatly obcompressed, el- 

 liptical, barely acute, chartaceous, flattened but not sulcate at base; 

 seeds several, large. Flowers not over 9 mm. long, white to cream- 

 colored, purple-tinged, short, erect. Calyx inclined to be shaggy. 

 Bracts ovate to lanceolate, acuminate, about as long as Calyx tube, 

 5-7 mm. long, scarious. Peduncles none to 1 cm. long, and spikes 

 2. 5-7.. 5 cm. long, flower-cluster mostly sessile among the leaves and 

 shorter than the leaves, earliest peduncles 7-15 mm. long, and spikes 

 2.5-5 cm. long and so appearing sessile among the leaves, but later 

 peduncles often 1 cm. long and the spikes 7.5 cm. long, latest pe- 

 duncles equal the earliest. Leaves 7.5-9 cm. long. Petioles 2.5-4 

 cm. long. Leaflets 4-7 pairs, oblong linear to nearly oblong, rounded 

 at end and cuneate at base, 2-9 mm. wide, 1-3 cm. long. Stipules 

 connate even to the top of the stems, upper part acuminate-triangu- 

 lar. Stems rather slender, 8-30 cm. long, internodes several and 

 2.5-6 cm. long. Pubescence of stems very dense and a little spread- 

 ing, on calyx rather coarse and entangled, on pods the same but 

 shorter, oldest stems and leaves are sometimes only pubescent. On 

 the Moencoppa, northern Arizona, Lower Temperate life zone on 

 benches. 



201. Astragalus confertiflorus Gray Proc. Am. Acad. 13 368 

 (1878). A. flavus var. candicans Gray. Cnemidophacos Rydberg. 

 Leaflets 4-6 pairs, 1.5-2.5 cm. long, linear, 2 mm. wide. Spikes 

 dense and many flowered, 5-7 cm. long on peduncles 7-9 cm. 

 long. Flowers white, becoming cream-colored with age. Banner 

 ai'ched in gentle arc from base to tip to 45-80^; groove is V-shaped 

 opposite keel tip but flattens out very greatly above where it is 3 

 mm. wide and 1 mm. deep; sides reflexed to 1 mm. wide opposite 

 the keel, not at all at tip and so making it seem obovate-obiong to 

 fiddle shaped (in the dried plant seeming lanceolate) and elon- 

 gated, emarginatc. Wings obliquely lance-oblong, 1 mm. wide, the 

 tip bent up to 45' and notched below the middle, 2-4 mm. longer 

 than keel and concave to it, the right hand one bent over keel 

 tip and the other bent out but with its tip turned in and touching 

 the other, concealing the keel. Keel very short relatively, exceeding 

 the calyx tips 2-4 mm., the tip abruptly incurved to over 90' and 

 very blunt and rounded, with a purple eye at tip which is sur- 

 rounded by a narrow white edge. Calyx nearly round in cross sec- 

 tion, about 4 mm. long, the lower edge straight and the upper a 

 little arched, base with a fleshy green spot and oblique, almost ses- 

 sile, cleft deeper above and with rounded sinuses, the teeth spread- 

 ing, green and 2-3 mm. long. Pods bisulcate at the thick ventral 

 suture, is trifle concave, or even convex, about 7.5 mm. long, oblong- 

 oval, silky to smooth, moderately obcompressed mostly but not sul- 

 cate dorsally. The flowers are often purple tinged and then the 

 white spot is waterlined with purple. The pubescence of the calyx 

 is looser and finer, the calyx teeth and bracts are more filiform. 



