Uesmodium crassum n. sp. 



pubescence of leaves soft and short; rachis of lea" about 6 lines 

 long- and very stout: petiole 1-2 inches lon^:; leaflets thick and 

 veiny, penninerved, \y2-3 inches loner, elliptical to oblong--lance- 

 olate, obtuse ; racemes panicled and proper peduncles not long- 

 er than the leaves, but the racemes themselves a foot or more 

 long: flowers gemii 

 stipules persistent, 

 smooth (long-ciliate on the margin), many, striate, coriaceous, 

 broadly ovate and clasping-, 3-4 lines long, yellowish, deciduous ; 

 flowers 3 lines long, purple : calyx tube cleft nearly to the base 

 with long subulate teeth which equal the flowers ; pods linear, 

 about 2 inches long, of round, small joints (about 8), uncinate- 

 puberulent, nearly sessile. Evidently near to D. cinerascens. 

 Guayanopa Canon, Sierra Madre Mts., Chihuahua, Mex., in 

 the Tropical Life Zone, Sept. 24, 1903. 



Desmodium Wislizeni var. venulosum n. var. 



Uppermost leaves broadly linear, often 2 inches long, all 

 dark-green and conspicuously venulose ; inflorescence minutely 

 pubescent with spreading hairs; petals deep blue 1>4 lines 

 long; leaflets all reflexed. Santa Rita Mts., Arizona, in the 

 Lower Temperate Life Zone, 4,500 feet alt., Aug. 24, 1903. 

 What I take to be the type of D. Wislizeni was collected in 



oth forms, 

 Desmodu 



Annual, erect, strict, much branched, with ascending and 

 very long branches with internodes 2-4 inches long and sulcate ; 

 whole plant minutely pubescent but seeming smooth; stip- 

 ules setaceous, filiform, rigid, not reflexed, 3-4 lines long, black- 

 ribbed, persistent ; bracts similar but nearly filiform, persistent, 

 3 lines long; leaves on stout sulcate petioles 6-9 lines long, the 

 more slender rachis half as long; leaflets linear, mostly obtuse, 

 almost sessile, rigid, 1-nerved, with prominent veinlets on 

 either side forming oblong meshes, 2-4 inches long, not reflexed ; 

 inflorescence panicled, but racemes sessile and 6-12 inches long; 

 pedicels filiform, about l}^-2 inches long, i ■ ■ • • 

 minute calyx; petails 1 line long, \ 



