Vr. PLANTS WRIGHTIAN.5;. 37 



Indigofera sph.erocarpa (sp. iiov.): fmtescens, glabella; caulibus erectis folin- 

 sissimis ; foliis pinnatis ; petioli brevi ; foliolis 7 - 8-jugis cum imparl lineari-oblon^is 

 basi attenuatis apice obtusis retusisve supra glabris ; raccmis multifloris ; leo-umi- 

 nibus ovato-globosis monospermis. — Bed of a mountain torrent, near Santa Cruz. 

 Sonora; Sept. (968.) — "Stems numerous from the root, 2 - 4 feet high." Leaf- 

 lets 5 or 6 lines long, 2 lines wide, very glabrous above, minutely and sparsely 

 strigulose and cinereous underneath. Stipules none, or a mere gland. Flowers 

 not seen ; the specimens being entirely in fruit. Fruiting racemes 4 or 5 inches 

 long, bearing a great number of globular and nearly glabrous legumes, which are 

 only a line and a half long, on pedicels of nearly the same length, tardily if at all 

 dehiscent. Seed entirely solitary, globose. 



I. LEPTosEPALA, Nutt. ; var. cinereo-argentata. Pebbly bed of a tributary of the 

 Pecos ; June. 



Proralea cuspidata, Pursh. Fl. 2. j). 741. Rocky hills of the San Pedro, West- 

 ern Texas ; May. 



P. EscuLENTA, Pursk. Stony hills of the San Felipe, Western Texas ; June. 



P. FLORiBUNDA, Nuff. ill Torr. Sf Gray, Fl. 1. 1). 300. Sides of mountains at the 

 copper mines. New Mexico ; Oct. (969.) 



Etsenhardtia amorphoides, H. B. K. ■? var. orthocarpa : leguminibus rectis 6 - 

 7 lin. longis pendulis ; foliolis majoribus 6-8 lin. lougis crebre glanduloso-puncta- 

 tis. — Mountains at Guadalupe Pass, between San Bernardino, Sonora, and the 

 copper mines, Sept. ; in fruit. (980.) — The leaflets are still larger than those of 

 Wright's No. 116, of which the fruit is not known. The legumes are nearly twice 

 as large as those of Lindheimer's No. 374 and Coulter's and Gregg's Mexican 

 specimens, in which they are ascending on the rhachis and falcate-incurved ; in the 

 present plant they are linear, straight, and all deflexed. If further specimens do 

 not tend to unite them, the present plant must be distinguished specifically. But 

 Schauer describes the fruit of his Mexican specimens in Aschenborn's collection as 

 lanceolate, a little arcuate at the apex, 7 lines long and 2 lines Avide. 



Dalea lanata, Sprciig. ; Gray, PL Wright, j)- -iT- Sandy soil, on the Eio 

 Grande; very common ; July. (981.) 



D. lachxostachts, Gray, PI. Wright. p. 46. Hill-sides, between the Barbocomori 

 and Santa Cruz, Sonora; Sept. (982.) — Root tapering, apparently perennial. 

 Stems 6 to 12 inches high, with spreading branches. 



D. NANA, Torr. in PL FendL p. 31. Hills on the Pecos; June. (13.51.) 



D. POGONATHERA, Gray, PL FendL p. 31, <^ PL Wright, p. 48. Stony hills near 

 El Paso, May ; and at Comanche Spring, Texas, June. (1352.) 



D. LAsiATHERA, Gray, PL Wright, p. '^'S. Stony prairies. Western Texas; May. 

 Valley of the Limpio ; June. (983.) 



D. FRUTESCENS ; \a.Y. spicis pi. m. elongatis densifloris. Gray, L c. p. 46. Rocky 

 hills on the Pecos ; June. — Also with short and dense spikes, on Live Oak Creek. 

 (1353.) 



D. FORMOSA, Torr. ; Gray, L c. Stony prairies on San Felipe Creek ; May. 

 Sandy hills on the Rio Grande, New Mexico; March, Oct. (984.) 



PL. AVR. — 6. 



