284 APPENDIX a. EOT ANY. 



O. Hirsutus, Sweet ; Hook. Fl. Bor.-Amer. 2, p. 124 ; Choisy, 1. c. Mlio- 

 nia hirsuta, Pursh, Fl. 2, p. 728. With the preceding. V, Stem erect, 2-3 

 feet high, sparingly branched ; viscously pubescent ; leaves 2-3 inches long, 

 and 1-1 1 inch wide, on very short petioles, nearly entire. Flowers in a long, 

 loose terminal and naked panicle ; involucre 3-flowered, rotate-companulate. 

 Fruit fusiform, oblong, 5-angled. As in most of the NyctaginacecE, this plant 

 abounds in cells filled with raphides. These are so abundant in the liber of the 

 root, that they form a layer of a silvery white color. 



Abronia mellifera, Dough, in Hook. Bot. Mag., t. 2879 ; Choisy, 1. c. 

 Cache Creek ; fl. and fr. May 18. The specimens in the collection agree exact- 

 ly with Douglas's plant collected in California, and named by Sir William 

 Hooker. 



CUPULIFERiE. 



Quercus tjndulata, Torr., in Ann. Lye, 2, p. 248, t. 4. Abundant on the 

 upper tributaries of the Red River. Stems 1-2 feet long, from a thick woody 

 base, sparingly branched above. Leaves oblong, two inches or more in length, 

 undulate, and furnished with 1-3 rather obtuse and scarcely mucronate teeth 

 on each side, densely and softly pubescent underneath, nearly smooth above, 

 thick and somewhat coriaceous. 



CONIFERS. 



Juniperus Virginiana, Linn.; Michx. f. Sylv. 2, p. 353, t. 155 ; Torr., Fl. 

 N. York, 2, p. 235. J. sabina, Hook., Fl. Bor.-Am. 2, p. 166. Middle Fork 

 of Red River. 



HYPOXIDACE^. 



Htpoxis erecta, Linn.; Bart , Fl. N. Amer., 1, t. 35, f. 1; Torr., Fl. N. 

 York, 2, p. 289. Headwaters of the Trinity River; May. 



COMMELYNACEiE. 



Commeltna angustifolia, Linn.; Kunth, Enum. 4, p. 53; Torr., Fl. N. 

 York, 2, p. 332. North Fork of Red River ; May-June. 



Tradescantia virginica, Linn.; Bot. Mag., t. 105; Bart. 1. c, t. 41; 

 Kunth, Enum. 4, p. 81 ; Torr., Fl N. York, 2, p. 333. Abundant on the up- 

 per tributaries of Red River ; May- June ; extremely variable in pubescence, 

 and in the breadth of the leaves. 



