72 Muhlenbergia, Volume 2 



place by Mrs. Brandegee, May i6. This is an interesting plant, 

 combining somewhat the characters of Lupinus proper and the 

 section Platycarpos. The writer had no idea that it belonged to 

 the latter section when he collected it. Strangely enough, it 

 has been referred to L. brevicaulis^ a specimen collected at Lan- 

 caster, Los Angeles county, by A. D. E. Elmer being so labeled, 

 as is one by Mr. H. M. Hall from Barstow, May, 1905, no. 6166. 

 Mr. Parish also collected it on the Mojave desert, outside of 

 which it has thus far not been detected. It is related toZ, brev- 

 icaulis only in a superficial way, being a much larger plant not 

 nearly so pubescent, the glabrous calyx of a different shape, and 

 the flowers much larger, apparently of a different shape. 



Liupinus desertorum 



Annual, section. Platycarpos? the stems prostrate, i dm. 

 long or less, pale, pubescent with short ascending hairs, leafy, 

 the leaves scattered, exceeding the inflorescence; petioles 5 cm. 

 long or less, pubescent like the stem; leaflets 7-9, oblong-oblan- 

 ceolate, 1.5 cm. long, 3-4 mm. wide, the apex acutish, the hairs 

 more numerous and longer than on the stems: stipules linear, 

 3 mm. long, densely hairy: peduncle none or very short, rarely 

 more than 5 mm. inflorescence 1-2 cm. long: bracts lanceolate, 

 3 mm. long, villous: pedicels 2 mm. long or less, also densely 

 villous, as is the calyx, the lower lobe 3 mm. long, 3-toothed, 

 the upper 2 mm. long, cleft almost to the base: flowers not 

 whorled, pale, 6 mm. long, 4 mm. across; banner tinged with 

 yellow, the edges turned back and parallel, the concavity shal- 

 low; wings moderately inflated, purplish or pinkish tinged, the 

 edges meeting throughout, on the upper side next the banner 

 raised into a sharp ridge with a shallow depression on either 

 side; keel glabrous, curved only near the end, broad, almost 

 2 mm. wide throughout, narrowed a little at the thick but acut- 

 ish purplish apex: pods immature, villous, oblong? i cm. or a 

 little more in leno-th. 



