234 



Malvastrum leptophyllum, Gray, PL Wright, p. 17. 



Valleys of the San Juan and La Plata. 

 Sphjeralcea Emorti, Torrey, PI. Wright, 1, 21. 



Valleys of the San Juan, La Plata, and Mancos. 

 Thamnosjma Texanum, Gray. 



Soda Spriug Ledge, CaQon City, 5,400 feet altitude. 

 Glossopetalon spinescens, Gray, PL Wright, ii, 29. 



IsTear Hovenweep Castle, 5,250 feet altitude. 

 Ehamnus (Frangula) Califorotous, Esch. 



Valley of the Animas, 6,500 feet altitude. 



PoLYGALA ACANTHOCLADA, Gray, new species, Proc. Am. Acad., xi 



p. 73. 



Fruticulosa, bipedalis, ramosissima, subcinereo-pubescens, spinis gra 

 cilibus armata; foliis lineari-spathulatis rigidulis (lin. 3-4 longis)^ flori 

 bus subaxillaribus sparsis albidis lin. 2 longis pedicello basi bibracteato 

 paruni brevioribus; alls obovatis sepalis cieteris duplo majoribus corol 

 lam adfequantibus ; carina breviter cymbiformi nuda dorso umbonata. 



Growing upon a blutf side near the San Juan EiVer in Utah, not far 

 from the Colorado boundary. 



LupiNus Stleri, Watsou. 



Trail between Parrott City and the Mancos, 7,500 feet altitude. 

 LuPiNUS Sitgeeavii, Watsou, Proc. Am. Ac, viii, 527. 



Common in Southwestern Colorado, 7,000 feet altitude. 

 Trifoliium eriocephalum, iSTutt. 



Lost Canon and Parrott City, 8,600 feet altitude. 

 Trifolium Brandeg-ei, Watson, new species, Proc. Am. Ac, xi, p. 



130. 



Dwarf, perennial, cespitose, and acaulescent, glabrous, the inflores- 

 cence slightly villous; stipules scarious; leaflets elliptic-oblong, thin, 

 acutish, entire, a half to an iuch long ; peduncles about equaling the 

 leaves; flowers spicate in a loose naked head, purplish, seven lines long; 

 calyx-teeth lanceolate, acuminate, a little longer than the campanulate 

 tube ; ovary stipitate, 7-ovuled. 



A very showy species, common in the Sierra La Plata. 



HosACKiA Wrightii, Gray, Plant. Wright, p. 42. 



Southwestern Colorado, 8,000 feet altitude. 

 Dale A l an at a, Spreng. 



Valley of the San Juan, 6,000 to 4,000 feet. 

 Peteria scoparia. Gray, PL Wright, p. 50. 



La Plata Valley. 

 Astragalus diphysus, Gray. 



Southwestern Colorado, 6,000 feet. 

 Astragalus Bigelovii, Gray. 



Valley of the Mancos, 5,000 to 6,000 feet. 



Astragalus subcompressus, new species. 



A. racemoso sect. Galegiformlum admodum similis; dentibus calycis 

 brevioribus; corolla ochroleuca; legumiue falcato lateraliter compresso 



