APPENDIX G. BOTANY. 271 



Petalostemon villosum, Nutt., Gen. 2, p. 85 ; Torr. and Gr., Fl. 1, p. 310. 

 Cache creek ; June 14 ; flowers not yet expanded. 



Dalcba aurea, Nutt., Gen. 2, p. 101 ; Torr. and Gr., Fl. 1, p. 308 ; Gray, 

 PI. Wright 2, p. 41 . Main Fork of Red River ; fl. July 5. 



D. lanata, Spreng. Syst. 3, p. 327. D. lanuginosa, Nutt., in Torr. and Gr., 

 Fl. 1, p. 307. Big Witchita and on the Main Fork of the Red River ; fl. 

 June 27. 



D. laxiflora, Pursh, Fl. 2, p. 741 ; Nutt., Gen. 2, p. 101 ; Torr. and Gr., 

 Fl. 1, p. 307. D. pencillata, Moricand, PI. Nouv. Amer., t. 45. Common on 

 all the upper waters of the Red River ; May-July. 



Amorpha canescens, Nutt., Gen. 2, p. 92; Ton-, and Gr., Fl. 1, p. 306. 



Witchita Mountains ; fl. May 30. 



Astragalus Nuttallianus, DC. Prodr. 2, p. 289 ; Torr. and Gr. 2, p. 234, 

 Upper waters of the Red River ; fl. and fr. May 5. The flowers are larger than 

 usual in this species. 



A. caryocarpus, Ker. Bot. Reg., t. 176 ; Torr. and Gr. Fl. 1, p. 331. Head- 

 waters of the Trinity. May 2 ; in flower only. 



Oxytropis Lamberti, Pursh, Fl. 2, p. 740; Torr. and Gr., Fl. 1, p. 339. 

 With the preceding ; fl. in May. 



Desmodium sessilifolium, Torr. and Gr. 1, p. 363. Witchita Mountains. 

 The specimens of this plant collected by Captain Marcy are in a state of remark- 

 able fasciaiion. The branches of the panicle are coalesced (sometimes almost 

 to the su#imit) into a broad flat mass, which is covered with sessile flowers and 

 fruit. 



Clitoria Mariana, Linn. ; Torr. and Gr., Fl. 1, p. 290 ; Torr., Fl, N. York r 

 1, p. 163, t. 24. On the Washita ; fl. July 27. 



Baptisia australis, R. Br. ; Torr. and Gr., Fl. 1, p. 385. Sources of the 

 Red River ; fl. and fr. June 6-10. 



B. leucoph^a, Nutt., Gen. 1, p, 282 ; Torr. and Gr. 1. c. Common on the 

 upper tributaries of the Red River ; fl. April, fr. May. 



Hoffmanseggia Jamesh, Torr. and Gr., Fl. 1, p. 293 ; Gray, PI. Lindh. 2, 

 p. 178. With the preceding ; fl. and fr. June 14-24. 



