«33 



leaves acuminate. Leaflets gradually smaller, often 20 pairs, with the 

 pubescence very fine and inclined to be shaggy-woolly and white but 

 the dark-green of the leaves not wholly concealed. About stcmless, 

 with several thick crowns from the thick and fleshy root, not at all 

 woody. This form is even more beautiful than the species, but it in- 

 tergrades at all points. It is a better developed form and is never yel- 

 low and has much longer pod.s. It grows in a more arid region, show- 

 ing that the species of the Plains (the type) is near its eastern climat- 

 ic limit, and is better adapted to more western regions. This is also evi- 

 dent from the fact that western forms are more specialized. Through- 

 out the Xavajo Hasin from the base of the Uintas to the Wasatch and 

 Chepeta Well (Colorado) east of Vernal Utah, southward through Man- 

 cos and Farmington New Me.xico and westwarrl along the Colorado to 

 Pioche Nevada, and northward through Wa \Va (west of Frisco) and 

 as far as Cottonwood Spring west of St. John Utah on the desert side. 

 Fower Temperate life zone in sandy and loose gravelly soil, apparent- 

 ly not growing on the Sevier though to be expected. 



189 /*8:ragalus Phoenicis Jones Cont. 8 12 (1898). Pods cylindri- 

 cal or nearly so. 2 cm. long, 5 mm. wifle and about 3-4 mm. high, nar- 

 rowly oblong, straight, liarely splitting the calyx, obcompresscd a lit- 

 tle, scarcely sulcate ventrally, the somewhat flattened beak triangular 

 and a simple projetion of the nearly straight ventral suture and not at 

 all upturned, partition hardly complete even in the middle, pods finely 

 and appressed and very short-pubescent, about a third longer than the 

 calyx. Flowers horizontal to ascnding. Banner oval, gently arched 

 to 45 degrees from the calyx tips, the blade about 1 cm. long, with the 

 sides reflexed 1 mm. wide, the claw rather long. Wings oblanceolate. 

 gently arcuate, a little longer than keel and 2 mm. shorter than ban- 

 ner. Keel straight, the tip erect and blunt and gently arcuate from 

 the base. Calyx tube about 7 mm, long and 3 mm. wide, nearly twice 

 as long as the triangular teeth, densely appressed-short-liairy. a little 

 wider below, rather truncate below and obli(iuely attached. Pedun- 

 cles scapose, about L5 dm. long including racliis which is about one 

 third the whole and rather loosely flowered, erect. Leaves 5-8 cm. 

 long, silvery-silky with short and appressed hairs, the petioles half the 

 whole. Leaflets 10-15 pairs, contiguous, oval, 7 mm. long, obtuse. 

 Stipules broad, not over 1 cm. long, acuminate, puberulcnt. Stem.s 

 caespitose, hardly 2.5 cm. long, covered by the imbricated stipules. 

 Plants with the general habit of A. amphioxys. Northern .Arizona, 

 Palmer, Hillsboro New Mexico. Diehl. Lower Temperate life zone. 

 This may be only a form of A. Humboldtii, but the pods are more sym- 

 metrical, it has the calyx of that ^ p2cie<. 



190 Astragalus Humboldtii Gray Proc. .Am. Acad 6 l'J5 (!8'^4'. 

 Pods oblong to oblong-lanceolate. 7-15 mm. long, about 5 mm wide 

 and 2-3 mm. high, arcuate, with side- inclined to be rugu!o-e, closely 

 felted when young and becoming smoother or even almost smooth 

 when ripe, with the deltiod to triangular beak abru]>t but stout and 

 rarely oblique, nearly or fully 2-celled to a little above the middle and 

 then 1-celled to tip as in the var. Tho npsnnae above. Flowers purple 

 or white, in oblong heads or short spikes, about 1.5 cm. long. Banner 

 gently arched to 45 degrees or less beyotid the calyx tips, with sides 

 folded back to the midrib fully 3 mm. wide opposite the keel and less 

 so above and giving the banner an oblong appearance, somewhat 

 notched. White spot beginning about 3 mm. below the tip is oblong 

 and purple-veined above. Wings nearly straight, linear-oblong, ob- 

 tuse, rounded, with lower side a little notched, about 3 mm, longer 

 than keel, 1 mm. wide, white beyond the keel, flat or slightly concave 

 to it, 4-6 mm shorter th;in banner. Keel about as high as long, with tip 

 rounded and erect, about 3 mm. wide in the middle, gently arched 

 from base, dark-jnirple. Calyx tube about 5 mm. long and 3 mm. wide, 

 rather truncate below and attached on the lower corner, with pubes- 

 cence short and rather appressed, with the subulate teeth rather more 



