above, purple-striped by a single line a little above the midrib. Keel 

 half-cuncate, about 6-8 mm. long and half as wide, purple, rounded 

 at tip. and base straight. Calyx tube carapanulate. about 3 mm. Ion-?, 

 rounded at base and attached in the middle of the end, fleshy-thickened 

 below, slightly flattened laterally, with lax and subulate teeth as 

 long as tube. Whole plant finely ashy-silky with loose pubescence 

 except the closely appressed-pubescent pods. Pedicels 2-4 mm. long 

 and except in fruit shorter than the bracts which are rigid, green, 

 and 3-5 mm. long. Peduncles stout, very sulcate, 1-2 dm. long, strict, 

 longer than the floral rachis and shorter than the fruiting one, and 

 with loosely racemose pods. Stems coarse and deeply sulcate, often 



1 cm. thick, erect, 1-2 feet high, branched below, in very dense tufts 

 2-5 feet wide and 2-3 feet high, from a thick, fleshy and erect root. 

 Leaves rarely 7 cm. long, small and inconspicuous, with 1-3 pairs of 

 filiform, channeled, leathery leaflets, 1-2 cm. long, not jointed to rachis, 

 distant, like the rachis. Stipules large, leathery, rigid, acute, green 

 coarse, twice as wide and often twice as long as the adjacent leaflets 

 the upper linear and erect, the lower triangular and often 1 cm. wide 

 and as long as the included leaf or nearly. Lower leaves very small. 

 This grows in drifting sand dunes and the like, in the Lower Tem- 

 perate life zone. It has a strong snake-like odor and dries very slowly 

 the whole plant being leathery. This is the most beautiful snecies of 

 the genus when the whole mass is ablaze with the pink-purple bloom. 

 On the sandy foot of the San Rafael Swell. Named for the late Rob- 

 ert Woodruff C. E., iny companion in trips on the deserts of the 

 Navajo Basin. 



13A. Astragalus Pasqualensis .Jones Cont. 10 87 (1902). Pods about 



2 cm. long 2 mm. high and 1 mm. wide, with beak in the middle of 

 the end, sessile, ashy. Flowers purple, rather coriaceous, inclined to 

 be sulcate at both sutures. 7-8 mm. long, wide, ascending, several in a 

 close raceme. Banner round, abruptly reflexed to the calyx at its 

 tip, about 5 mm. long, as long as wings and keel. Wings oblaneo- 

 late, about 1 mm. wide, much narrower than keel. Keel about 5 mm. 

 long, 2 mm. high about the middle, half-rhomboidal-obovate, acute, 

 conspicuous. Calyx tube about 1 mm. long, hemispherical, with the 

 subulate teeth twice to three times as long and spreading. Bracts 

 subulate, about 1 mm. long. Pedicels stout, hardly 1 mm. long, re- 

 flexed. Peduncles 2-3 cm. long, about half as lone; as rachis Leavps 

 3-4 cm. long, very broad almost sessile. Leaflets apiculate, distant f '^d 

 obtuse, about 2 cm. Inng, rigid, hoary with very minute and fins 

 hairs fixed by the middle. Stems a foot or two high, decumbent, 

 leafy, with the internodes about half as long as leaves, from a woody 

 base. Santiago de Pasqualo, Durango Mexico, Palmer No. 398, Auril 

 to May 1896. This is probably not an Astragalus. Thpy very rigid 

 and immature pods seem to have an inner lining and are wholly 

 1-celled (described as 2-celled), they seem to be sulcate or inclined to 

 be sulcate at both sutrre'=!. pud probably are contracted between th-^^ 

 seeds and partly separate when m^tnr-^. But so far as the material 

 goes cannot be referred to pr\y other a-enus. What is evidently the 

 same species is No. 5831 Purpus from Puebla Mexico, May 1912. 



14. Astragalus simciicifolius (Nutt.) Gmy Proc. Am. Acad. 6 231 

 (1864) Phaca simplicifolia Nutt. in T. & G. Fl. 1 350 (1838). Horanio- 

 bus uniflorus Rydbers. Pods linear and short-acuminate to trinns;-!- 

 I'lr-ovate, straight or with ventral suture concave, not ov^r 1 cm. lon-^, 

 about 2 mm. high completely flat when young, elliptical in cross 

 section when ripe, with acerose tip, sometimes brirely exceeding the 

 calyx, mostly 1-seeded. Flowers C-8 mm. long, with light claws, solitary 

 in the type on peduncles not longer than the very short leaves. Ban- 

 ner about 5 mm. long, oval, arched abruptly at calyx tips to about 60 



