APPENDIX G.- — BOTANY. 255 



Polyt^nia Nuttallii, DC. Umb., p. 53, t. 13, and Prodr. 4, p. 

 196 ; Torr. and Gr., Fl. 1, p. 533. Middle Fork of Red River ; fl. June 

 1. Witchita Mountains; fr. July 16. 



Euryt^nia Texana, Torr. and Gr., Fl. 1, p. 633. Main Fork of 

 Red River; fr. June 11. This plant has hitherto been found only by 

 the late Mr. Drummond, who discovered it in Texas more than twenty 

 years ago. It is an annual, about two feet high ; the fine striae of the 

 stem and branches are roughened upward, with minute points. The 

 umbels are compound and spreading. Flowers minute. Petals white, 

 broadly orbicular, waved on the margin, deeply emarginate, with an in- 

 flexed point. Fruit about one- third larger than in Drummond's Texan 

 specimen. 



RUBIACEJS. 



Oldbnlandia angustifolia, Gray, PL Wright. 2, p. 68. Houstonia 

 angustifolia, Mich. Fl. 1, p. 85 ; Hedyotis stenophylla, Torr. and Gr., 

 Fl. 2, p. 41. Tributaries ot the Main Fork of Red River; fl. May — 

 June. 



VALERIANACE^E. 



Fedia radiata, /3. leio<?arpa, Torr. and Gr., Fl. 2, p. 52. Upper 

 Red River. 



COMPOSITE. 



Liatris squarrosa, Willd. ; Torr. and Gr., Fl. 2, p. 68 ; Sweet Fl. 

 Gard., t. 44. Tributaries of the Washita River ; fl. July 22—24. 



L. acidota, Engelm. and Gray, PI. Lindh., p. 10 ; Gray PI. Wright. 

 1, p. 83. L. mucronata, Torr. and Gr., Fl. 2, p. 70 ; not of D. C. On 

 the Washita ; July 27. 



Solidago odora, Nutt.; Torr. and Gr., Fl. 2, p. 219. Witchita 

 Mountains; July 16. 



S. Missouriensis, Nutt. in Jour. Acad. Philad.. 1, p. 32, and Trans. 

 Amer. Phil. Soc. (n. ser.) 7, p. 327 ; Torr. and Gr., Fl. 2, p. 222. With 

 the preceding. 



Artemisia filifolia, Torr. in Ann. Lye. N. York, 2, p. 211 ; Torr. 

 and Gr., Fl. 2, p. 417. Upper tributaries of the Red River ; May. An 



