254 APPENDIX G. BOTANY. 



7 lines long, ovate, strongly tetraquetrous, abruptly contracted at the 

 base, and 2-4-seeded ; the seeds more or less imbricated. 



LOASACE^E. 



Mentzelia nttda, Torr. and Gr., Fl. 1, p. 535 ; Gray, PI. Fendl, p. 

 47, and PI. Wright. 1, p. 73 ; Bartonia niida, Nutt. Gen. 1, p. 297. 

 Witchita Mountains ; fl. June 22. 



CUCURBITACEtE. 



Cucurbit a perennis, Gray, PL Lindh. 2, p. 193 ; and Wright. PI. 

 2, p. 60. C. fcetidissima, H. B. and Kunth ? Cucumis perennis, James, 

 in Long's Exped. 2, p. 20 ; Torr. and Gr., Fl. 1, p. 543. North Fork of 

 the Platte ; fl. June 6. Although the cultivated plant seems to be 

 dioecious not unpleasant to the smell, Mr. Wright says, (vide Gray, 

 1. c.) that in a wild state it is " certainly monoecious, and exhales an un- 

 pleasant smell when bruised ;•" so that it does not differ from the descrip- 

 tion of C. fcetidissima, except that the latter is said by Kunth to be an 

 annual, which may be a mistake. The flowers are as large as those of 

 the common pumpkin. 



Sicydxum, sp. nov ? Fruit l-§- inch in diameter, globose, sessile. 

 Seeds -J larger than in S. Lindheimeri, and more turgid. On the Main 

 Fork of Red River; fr. July 11. 



GROSSULACE^E. 



Ribes aureum, Pursh, Fl. 1, p. 164; Torr. and Gr., Fl. 1, p. 552. 

 North Fork of Red River ; fr. June 4. 



UMBELLIFER^E. 



Eryngium diffustjm, Torr. in Ann. Lye. N. York, 2, p. 207 ; Torr. 

 and Gr., Fl. 1, p. 603. Witchita Mountains; fl. June 14. This rare 

 species has not been found before, since it was first discovered by Dr. 

 James, more than thirty years ago. It is rather doubtful whether it is 

 diffuse, except, perhaps, when it is old. The specimens of Captain 

 Marcy are less branched than the original one from which the description 

 in the Flora of North America was drawn. 



Leptocaulis echinatus, Nutl, in DC. Prodr. 4, p. 107 ; Torr. and 

 Gr., FL 1, p. 609. Headwaters of the Trinity; April 2. 



