APPENDIX G. BOTANY. 267 



RANUCULACEJE. 



Clematis Pitcheri, Torr. and Gr., Fl. 1, p. 10. Witchita Mountains; fl. 

 and fr. July 17. 



Anemone Caroliniana, Walt. ; Torr. and Gr., Fl. 1, p. 12. Sources of the 

 Trinity River ; May 3. 



Delphinium azureum, Michx. ; Torr. and Gr., Fl. 1, p. 32. Main Fork of 

 the Red River ; fl. May 8— June 16. 



PAPAVERACEiE. 



Argemone Mexicana, Linn. ; Torr. and Gr., Fl. 1, p. 61. Common on the 

 upper waters of the Red River ; May — June 16. 



CRUCIFERiE. 



Vesicaria angustifolia, Nutt., in Torr. and Gr., Fl. 1, p. 101 ; Gray, PI. 

 Lindh. 2, p. 145. Sources of the Trinity River ; fl. and fr. May 3. 



V. stenophylla, Gray, PI. Lindh. 2, p. 149 ; and PI. Wright. 1, p. 10, and 

 2, p. 13. North Fork of the Red River ; fr. June 14. 



Pithyr.ea Wislizeni, Engelm., in Wisliz. in Mex., p. 95; Gray, PI. Wright. 

 1, p. 10, and 2, p. 14. Abundant on the headwaters of the Red River ; June 

 23— July 14. 



The specimens of this plant collected by Captain Marcy vary considerably in 

 the leaves, which are often nearly entire. The flowers also vary in size ; the 

 petals being sometimes nearly one-third of an inch in length. The silicles are 

 larger than in specimens collected in New Mexico by Mr. Wright and Dr. Ed- 

 wards. They are by no means always deeply emarginate at the base, and some- 

 times they are slightly notched at the summit. 



Streptanthus hyacinthoides, Hook., in Bot. Mag., t. 3516 ; Torr. and 

 Gr., Fl. 1, p. 78 ; Gray, Gen. 111., t. 61. Witchita Mountains to the boun- 

 dary of the Choctaw Nation ; fl. May 31 — June 4. 



CAPPARIDACEiE. 



Polanisia graveolens, Raf. ; Torr. and Gr., Fl. 1, p. 123, and Suppl., p. 

 669. Witchita Mountains ; fl. and fr. July 16. The pods are on a short stipe, 

 and the seeds are more or less rough. 



