‘BOTANY, 163 
PSORALEA ESCULENTA, Pursh, Fl. 2, p. 475, t. 22. On the Colorado, Western Texas; April. 
PsoRALEA oBtusiLopa, Torr. and Gray, Fl. 1, p. 300. Western Texas; May. 
PsoRALEA FLORIBUNDA, Nutt. in Torr. and Gray, Fl. 1. c. Western Texas; May. 
PsoRALEA cusPipaTA, Pursh, Fl. 2, p. 741. Western Texas; April. 
Psoralea DiGITATA, Nutt. in Torr. and Gray, l.c. Western Texas; April. 
Data Formosa, Zorr. in Am. Lyc. N. York, 2, p. 78; and in Emory’s Rep. t.1. Every- 
where between the Rio Grande and Western Texas. 
PETALOSTEMON VIOLACEUM, Micha. Near Fort Washita. 
PETALOSTEMON CANDIDUM, Michx. Near Fort Washita. 
ASTRAGALUS MOLLISsImus, Torr. in Am. Lyc. N. York, 2, p. 178; Gray, Pl. Wright. 1, p. 53. 
On the Llano Estacado, in sandy soil; March, April. Plant sometimes considerably caules- 
cent, and a foot high. 
ASTRAGALUS SUCCUMBENS, Dougl. in Hook. Fl. Bor.-Am. 1, p. 151... On the Pecos, Llano 
Estacado, &c.; March, April. The specimens are only in flower; in which state they very 
well accord with Douglas’ plant. Mr. Gordon also gathered it in flower on the Raton mount- 
alns, 
ASTRAGALUS PAUCIFLORUS, Hook. Fl. Bor.-Am. 1, p. 129. High grounds at the head-waters 
of the Colorado, Texas; April. 
ASTRAGALUS MIssoURIENSIS, Nutt. Gen. 2, p. 99. Guadalupe mountains to the Colorado; 
March, April. 
ASTRAGALUS cyaNEUs, Gray, Pl. Fendl. p. 34. Between the Pecos and Llano Estacado. 
Probably too near the preceding species. 
AstraGALus Nurratiianus, DC., var. trichocarpus and canescens, Gray, Pl. Wright. From 
the Pecos to the Colorado; March, April. 
Astrracatus LinpHemert, Gray, Pl. Wright. 1, p. 52. On the upper Colorado; April. 
AsTRAGALUS CANDENSIS, Linn. Near Fort Washita; April. 
ASTRAGALUS, n. sp.? In flower only. High ground, on the eastern border of the Llano 
Estacado; April. 
Oxytropis Lamperti, Pursh, Fl. 2, p. 740. Western Texas; May. 
STYLOSANTHES ELATIOR, Swartz.; DC. Prodr. 2, p. 381. Western Texas; May. 
' Desmopium canescens, DC. Prodr. 2, p. 238. Near Fort Washita. 
Luspepeza Stuvet, Nutt. Gen. 2, p. 107. Near Fort Washita. 
SopHora sericea, Nutt. Gen. 1, p. 280. Western Texas; April. 
CERCIS OccIDENTALIS, Torr. in Pl. Lindh. 2,p. 177. Near Fort Chadbourne; May. 
HoFFMANSEGGIA STRICTA, var. demissa, Benth. in Pl. Wright. 1, p. 56. Llano Estacado to the 
Colorado; April. In flower. 
HoFFMANSEGGIA DREPANOCARPA, Gray, Pl. Wright. 1, p. 58. On the Pecos. 
HoFFMANSEGGIA BRACHYCARPA, Gray,/.c. On the Pecos. 
HorrManseGera JAMesit, Torr. and Gray, Fl, 1, p. 393; Torr. in Marcy’s Rep. t. 4. Llano 
Estacado. 
Cassia Puminio, Gray, Pl. Lindh. 2, p. 180; and Pl. Wright. 1, p. 59. Llano Estacado, &c. ; 
April 
Cassta Bavatniores, Gray, 1.c. Llano Estacado; April. 
Cass1a Remerrana, Scheele; Gray, Pl. Lindh. 2, p. 179. Western Texas; April. 
STROMBOCARPA PUBESCENS, Gray, Pl. Wright. 1, p. 60; (Prosopis, Benth.) Near Dofia Ana. 
The fruit only; called Tornio, or Screw-tree ; in some owe Screw-bean, 
