236 



Fruiting specimens only; collected in McElmo Valley, 5,500 feet 

 altitude. 



ASTRAGALUS . 



An interesting species, collected in fruiting specimens only, grows 

 about Navajo Springs, near Cariso Mountains, Arizona. Another un- 

 certain species, growing upon the alkaline flats of the La Plata, was 

 almost out of fruit in June. 



OXYTROPIS PODOCARPA, Gray. 



Sierra Sangre de Cristo, 12,000 feet altitude, and alpine summits of 

 the mountains near Breckenridge. 



PRUNTJS DE^IISSA, Wai p. 



Common upon both eastern and western slopes at 8,000 feet elevation. 

 COWANIA MEXICANA, Don. 



Mesa Verde and its canons ; El Late, 6,000 feet. 



COLEOGYNE RAMOSISSIMA, Nutt. 



Near Hovenweep Castle, 5,250 feet altitude. 

 PERAPHYLLTDI RAMOSISSIMUM, Xutt. 



Valleys of the Aniinas, La Plata, and Mancos, 6,000 to 8,000 feet 

 altitude. 



CRAT^EGUS COCCINEA, L. 



Greenhorn Range of the Arkansas Valley and along the banks of all 

 the streams and rivers of Southwestern Colorado. 



CRAT^EGUS RIYULARIS, Xutt (?). 



Texas Creek, near the Sangre de Cristo, 8,000 feet. 

 POTENTILLA CRINITA, Gray, PI. Feud., 41. 



Thompson's Park, 7,500 feet. 

 HEUCHERA RUBESCENS, Torr. 



El Late, 9,000 feet. 

 FENDLERA RUPICOLA, Eng. & Gray, PI. Wright, 77. 



Valleys of the Animas, La Plata, and Mancos, Mesa Verde and Cariso 

 Mountains. 



TlLLAEA D^RTDIMONDII, T. & G. 



Eio Grande Valley. 

 CALLITRICHE VERNA, L. 



Rio Grande Valley. 

 CENOTHERA BREVIPES, Gray, \ar.parvijlora, Watson. 



Sand-bar of the Rio Mancos, 5,000 feet. 



CEXOTHERA SCAPOIDEA, Xutt. 



Alkaline flats, Canon City Park, 5 5 500 feet. 

 MENTZELIA ORNATA, T. & G. 



Common throughout the Arkansas Valley, from 4,000 to 6,000 feet 

 altitude. The flowers are more than 6 inches in diameter, opening at 

 twilight, about two hours later than those of Jf. nuda. When opening, they 

 fill the surrounding air for some distance with fragrance. J/. multiflora 



