CATALOGUE. 119 



Young fruit strongly glandular hairy, but never prickly, becoming 

 smoother with age; mature fruit maroon or reddish-purple, globose, three- 

 eighths of an inch in diameter, few- to many-seeded, edible; seeds dis- 

 tinctly wing-margined, with the inner coat, as seen through the gelatinous 

 covering, longitudinally dotted. 



It will be seen that this plant approaches both B. glutinosum, Benth., 

 and B. sanguineum, Pursh, though its nearer affinity is with the latter. It 

 is distinguished from the former in being fewer-flowered, having shorter 

 racemes and a rounder berry, and from the latter by its shorter racemes, 

 relatively shorter bracts and longer pedicels, and erect calyx-lobes. It 

 may prove to be a mere variety of B. sanguineum, though I think it suffi- 

 ciently distinct to bear the name of its zealous discoverer, Professor Wolf. 



Habitat. — Rocky places, at Twin Lakes and Mosquito Pass, at an alti- 

 tude of from 10,000 to 11,000 feet. 



CRASSULACE^. 



Till^a angustifolia, Nutt. — Twin Lakes, Colorado (972, 326). 



Sedum Rhodiola, DC. — South Park, Colorado (771). 



Sedum Wrightii, Gray. — 2-6' high; stems ascending from a decum- 

 bent base; radical leaves 2-4" long, obovate-spatulate, slightly pulveru- 

 lent, margin whitish, very slightly denticulate; stem-leaves (and stem) 

 purple-tinged, lanceolate, 3-5" long; inflorescence densely cymose, secund; 

 petals 5, white, with a tinge of red, apiculate, twice as long as the obtuse 

 sepals; carpels abruptly contracted into a long, slender style. — Mount 

 Graham, Arizona, at 9,000 feet altitude, sending its fibrous roots down into 

 the crevices of the damp rocks (756). 



Sedum rhodanthom, Gray. — Colorado (769, 326). 



Sedum stenopetalum, Pursh. — South Park, Colorado (770). 



HALORAGE^E. 



Hippuris vulgaris, L. — Colorado, not rare (118). 



Callitriche verna, L. — Twin Lakes (314). 



Callitriche autumnalis, L. — Rio Grande at Loma, Colorado (987). . 



