404 PROCEEDINGS OF THE AMERICAN ACADEMY 



Dalea lasiostachys, Benth. A slender form with very small 

 narrow leaflets. Rio Blanco, on moist hillsides ; -June. (26.) 



Dalea pectinata, Kunth. Usually with a single stem, 4 or 5 

 feet high ; flowers purple with a white centre, iiio Blanco ; July. 

 (145.) 



Dalea Lemmoni, Parry. Guadalajara and Rio Blanco, trailing 

 among grass and bushes in low sandy places ; September. (477, 497, 

 573.) 



Dalea nigra. Mart. & Gal. A form with the rather broad spikes 

 sessile or very nearly so ; flowers blue. Rio Blanco, in grassy bot- 

 toms ; September. (550.) 



Dalea sericea, Lag. Rio Blanco, in deep ravines; October. 

 (6G6.) 



Dalea gracillima. Trailing, glabrous throughout, the very slen- 

 der stems s^eral feet in length with numerous almost filiform branch- 

 lets : leaves delicate, on the stems 9 lines long, on the branchlets 6 

 lines or less ; leaflets G to 10 pairs, narrowly oblanceolate, |^ to 2 lines 

 long : racemes terminal on filiform peduncles, 2-5-flowered, the pedi- 

 cels approximate: calyx turbinate-campauulate, about a line long, the 

 broad lobes acute ; petals purple, 3 lines long. Guadalajara ; Septem- 

 ber. (461.) — l:s ear D. diffusa. 



Dalea revoluta. Annual (?), glabrous throughout; stems her- 

 baceous, erect (1 to 2 feet higli), slender, simple or sparingly branched 

 above: leaves 1 to 1^ inches long; leaflets about 10 pairs, linear- 

 revolute, densely punctate, 2 or 3 lines long: spikes on elongated 

 peduncles, dense, cylindrical, an inch long; bracts ovate and long- 

 acuminate, puberuleut, ciliate at base, densely punctate, persistent ; 

 calyx cylindric-campanulate, thin and pale, finely pubescent, the lan- 

 ceolate acuminate teeth as long as the tube ; corolla white, or the 

 banner purplish. Guadalajara, among bushes; September. (496.) 

 — With the habit of D. pectinata. 



Indigofera sph.ergcarpa, Gray. Rio Blanco, among underbrush 

 on the side of a canon ; September. (596.) 



Indigofera Palmeri. A shrub, 4 to 6 feet high, the branchlets 

 subtomentose : leaflets 2 to 5 pairs, oblong-elliptical, obtuse or acute, 

 usually acute at base, 5 to 8 lines long, appressed-pubescent, the 

 pubescence upon the rhachis, as upon the peduncles and pods, some- 

 what loose and spreading: racemes sessile, shorter than the leaves: 

 calyx-lobes acute, about equalling the short tube: pods straight or 

 slightly curved, scattered, about an inch long. Tequila. (392.) 



Brongniartia inconstans. A glabrous shrub, about 3 feet high: 



