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64 Contributions to Western Botany. 
4” longer than keel, about 4’’ wide, purple-tipped; keel gently 
arched from base to tip in about a half circle, obtuse, about 1” 
wide, boat shaped; calyx hyaline, thin, ashy, cleft deeper above, 
upper side arched, lower side straight, base narrowed and in- 
serted on lower corner; tube cylindric, 2’’ long, teeth short and 
deltoid; bracts ovate, hyaline; pedicels shorter than the bracts; 
leaves 1-2’ long, widely spreading; all but the lowest closely ses- 
sile; leaflets contiguous to imbricated, obovate, apiculate, 2-3” 
long, about 10 pairs, ashy on the margins, thick, petiolulate; 
stipules stiff, green, reflexed, adnate, deltoid; stems prostrate, 
slender; internodes J-3’ long, smooth 
A. elegans (Hook. Fl. 1 144) Sheldon |.c. 154. If this name 
is to be changed it should be A. minor (Hook. Fi. 1 144). 
A. curtiflorus (Rydb. Fl. Mont. 242). A. elegans var. curti- 
floras Rydb.}.c. This is the plant long called A. oroboides var. 
Americanus and abounds in Colorado. It differs from A. ele- 
gans in the very small and dull flowers, pods in very long and 
rather dense racemes, and in congested leaflets. The writer has 
seen no intergrades with the true A. elegaus, with which it has 
been confounded. 
A. sinuatus Piper Torr. Bull. 28 40 is a synonym of the true 
A. speirocarpus Gray. Gray himself confused his type with the 
variety falciformis which is a var. of A. Gibbsii and not of speir- 
ocarpus. 
sulphurescens Rydb. Torr, Bull. 28 36 is the normal 
and well developed A. nitidus Dotigl. described by Hooker as 
adsurgeps var. robustior Fl. 1 149 and though hardly deserving 
varietal rank may be known as var. robustior ( Hook.) 
A. drepanolobus var. aberrans n. var. Pods 6’ long, 2’’ 
high, a little arched, a little sulcate, on a slender stipe which is 
1” long. glabrous only when ripe. Columbia Basin. 
A. Kaibensis n. sp. Like A. Episcopus Wats. which is the 
same as A. lancearius Gray. but pods broadly lanceolate-oblong, 
