feet in diameter, whole plant softly short-pubescent with 

 spreading and rather coarse short white hairs, not woolly; 

 leaves about 1 inch long; leaflets 3-6 pairs, cuneate-obovate, re- 

 luse thick, prominently glandular dotted, 2-4 lines long, approx- 

 inate; internodes shorter than the leaves; spikes on terminal 

 peduncles 1-2 inches long, dense, about 1 inch long, broadly lin- 

 ear; flowers not reflexed ; bracts rhomboidal, very villous, 

 ncute, about as long as calyx, 1 Hue long, persistent, with a 

 line of large yellow glands on the margin, caudate with an 

 abrupt acumination; calyx turbinate, obpyramidal and angled 

 by the stiff ribs, smooth and shining and hyaline except at the 

 top which is coarsely hairy like the leaves; calyx teeth deltoid- 

 triangular and rarely half the tube, hairy; blades of petals 

 about 1 line long, very deep-purple, much exceeded by the 

 stamens; pods half-reniform, pubescent like the leaves, 1 line 

 long, gland bearing at the top between the ribs. Common at 

 El Paso, Texas, in the Tropical Life Zone, also Albuquerque, 

 in the same zone. Also at Billings in the upper Temperate 

 Life Zone. Grows in sand dunes and very sandy places. This 

 differs from D. lanata to which it has been . <P otT r-«d in the pu- 

 bescence not woolly, calyx teeth twice shorter, and rhomboidal 

 bracts. It differs from D. arenaria in the pubescence, duration, 

 and not caudate calyx teeth. But the three species are evident- 

 ly closely related. 



Lotus Madrensis n. sp. 



Very closely allied to L, Torreyi but bracts petioled and 

 Avith 1-5 leaflets at the end ; whole plant minutely pubescent ; 

 calyx teeth as long as the tube and subulate ; banner and keel 

 tip yellow; wings white, 5 lines long; fruiting peduncles often 

 6 inches long and stout ; pods several, straight, linear, lyi 

 inches long. 1 line wide; leaflets 9-11, 9 lines long, elliptical- 

 cuneate. acute, glabrous above. Tufted plants with decum- 



with roots covered with water; perennial. Chuichupa, Sierra 

 Madre Mts.. Chihuahua, Mex., Sept. 26, 1903, in the Middle 

 Temperate Life Zone. 



Z 



'. group as L. Chihuahuana, cae;*- 

 pitose, prostrate perennial with filiform branching stems a few 

 inches long, with short internodes ; leaves about 6-9 lines long, 

 on a petiole 4-6 lines long, delicate, nearly smooth; le.iflets 

 iibout 3 lines long, rhomboidal-obovate-cuneate, ?i-S. mostly 3; 

 whole plant nearly smooth ; fruiting peduncles filiform, 2-3 inch- 



