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BOTANY. 163 
PsoRALEA ESCULENTA, Pursh, Fl. 2; p. 475, t. 22. On the Colorado, Western Texas; April. 
PsoRALEA OBTUSILOBA, Torr. and Gray, Fl. 1, p. 300. Western Texas; May. 
PsoRALEA FLORIBUNDA, Nutt. in Torr. and Gray, Fl. l. c. Western Texas; May. 
PsoRALEA cusPIDATA, Pursh, Fl. 2, p. 141. Western Texas; April. 
PsoRALEA DIGITATA, Nutt. in Torr. and Gray, l.c. Western Texas; April. 
Darga Formosa, Torr. in Am. Lyc. N. York, 2, p. [8; and in Emory’s Rep. t.1. Every- 
where between the Rio Grande and Western Texas. 
PETALOSTEMON VIOLACEUM, Micha. Near Fort Washita. 
PETALOSTEMON CANDIDUM, Micha. Near Fort Washita. 
ASTRAGALUS MOLLISSIMUS, Torr. in Am. Lyc. N. York, 2, p. 118; 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 SUOCUMBENS, 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- 
ains. 
ASTRAGALUS PAUCIFLORUS, Hook. Fl. Bor.-Am. 1, p. 129. High grounds at the head-waters 
of the Colorado, Texas; April. 
AsrRAGALUS Missourrensis, 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 NUTTALLIANUS, DO., var. trichocarpus and canescens, Gray, Pl. Wright. From 
the Pecos to the Colorado; March, April. 
AsrRAGALUS LINDHEIMERI, Gray, Pl. Wright. 1, p. 52. On the upper Colorado; April. 
AsTRAGALUS CANDENSIS, Zinn. Near Fort Washita; April. 
ASTRAGALUS, n. sp.? In flower only. High ground, on the eastern border of the Llano © 
Estacado; April. 
Oxytropis LAMBERTI, Pursh, Fl. 2, p. 140. Western Texas; May. 
SryLosaNTHES ELATIOR, Swartz.; DC. Prodr. 2, p. 381. Western Texas; May. 
DESMODIUM cANESCENS, DC. Prodr. 2, p. 238. Near Fort Washita. 
Lespepeza SrUvEr, 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. 
HorrMANSEGGIA stricta, var. demissa, Benth. in Pl. Wright. 1, p. 56. Llano Estacado to the 
Colorado; April. In flower. 
HorrMANsEGGIA DREPANOCARPA, Gray, Pl. Wright. 1, p. 58. On the Pecos. 
HorFMANSEGGIA BRACHYCARPA, Gray, l. c. On the Pecos. 
HorrMaxsEGGIA Jamest, Torr, and Gray, Fl. 1, p. 393; Torr. in Marcy's Rep. t. 4. Llano 
Estacado. 
Cassta Pomno, Gray, Pl. Lindh. 2, p. 180; and Pl, Wright. 1, p. 59. Llano Estacado, &c. ; 
April. 
Cassta BAUHINIOIDES, Gray, l. c. Llano Estacado; April. 
Cassia Ramertana, Scheele; Gray, Pl. Lindh. 2, p. 179. Western Texas; April. 
SrroMBocaRPa PUBESCENS, Gray, Pl. Wright. 1, p. 60; (Prosopis, Benth.) Near Doña Ana. 
The fruit only; called Tornio, or Screw-tree ; in some districts Screw-bean. 
