LUPINUS SUBHIRSUTUS N. SP. 

 Hv Anstruther Davidson, M. D., C. IM. 



Annual, stem erect, 2-i dm. high, villous throughout with long 

 white hairs; branches few; petioles hairy, 2-3 times as long as the 

 leaves; leaflets 8, light green, 2 cm. long, oblanceolate, acute or apicu- 

 late at the apex, glabrate above, sparsely long haired beneath, more 

 so on the margins; flowers somewhat verticillate; peduncles 3-4 mm. 

 long; bracts linear, threadlike, persistent, very hairy, 6-8 mm. long; 

 flowers 10 mm. long, light blue, banner with central yellow spot, 

 flecked with dark dots, sides reflexed; keel naked; upper calyx 

 deeply and openly cleft, the uniting base scarious and of a light 

 blue color, lower calyx densely haired, entire; pod short, erect, 10-12 

 mm. long, 4-seeded. 



Palm Springs, Colorado Desert; April, 1919. Type No. iiii 

 author's harbarium. This plant grows in the sand both at Palm 

 Springs and Thermal, and was first seen by the author at the latter 

 place in 1908, but was not again collected until this season, when 

 Mr. M. S. Gordon found it at Palm Springs. At my request Mr. 

 Daggett in a collecting trip for the Museum sought for and found 

 a few specimens from which the type has been taken. 



Lupiuus hirsutus in general appearance resembles L. sparsijlorus, 

 but differs from that plant in having larger flowers and these semi- 

 verticillate; L. sparsijlorus has the flowers notably alternate and 

 somewhat distant, and the hairs on all parts show under the micro- 

 scope numerous tiny nodes arranged in somewhat irregular whorls. 

 The hairs on L. subhirsutus are smooth except those on the lower 

 calyx, which show a few nodes. 



Lupinus nanus, with which L. subhirsutus might be confounded, 

 has somewhat similar flowers, but these are verticillate; the hairs 

 are smooth except on the lower calyx and the bracts are not per- 

 sistent. 



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