120 PROCEEDINGS OP THE AMERICAN ACADEMY 



bract verj' sliort and not foliaceous ; perigyniura more or less three-angled, 

 often hairy, the beak straight or nearly so. — The sheaths are very short 

 and easily overlooked in C. concinna, and in C Boottiana they rarely occur, 

 as the spike is one and terminal. 



176. Carex eburnea, Boott, Hook. Fl. Bor.-Am. ii. 226, t. 225. 

 G. alba, Dewey, Sill. Journ. vii. 266. 



C alba, var. setifolia, Dewey, Sill. Journ. xi. 316. 

 Kentucky and Missouri northward to Mackenzie's River, and New 

 England. 



177. Carex concinna, R. Brown, Frankl. Narr. App. 763. 

 C. ornithopoda, Torr, Mouogr. 412. 



Saskatchewan, Bourgeau, Rocky Mts. of British America, according 

 to Boott, and northward. I inserted this species in Coulter's Manual 

 upon the authority of OIney (Bot. King's Report, 372), but I have 

 since examined the specimen from the Wahsatch there referred to 

 C concinna and find it to be a small and immature C. aurea. 



178. Carex melanocarpa, Chamisso; Ti-autv. in Middend. It. I. 

 part 2, pp. 7, 14, and 21, t. 4. 



Cespitose : leaves linear, shorter than the culm : staminate spike 

 solitary ; pistillate spikes one or two, erect, very small, few-flowered, 

 the upper one close to the staminate spike and sessile, the lowest 

 remote, with the short peduncle included in the sheath of the bract: 

 bract rauticous or cuspidate, that and the scales orbicular-elliptic, 

 rounded at the apex, dark purple and slightly puberulent on the back : 

 perigyuium oval, compressed, surpassing the culm, beakless, slightly 

 puberulent, the orifice entire. Trautvetter's figure represents a pecu- 

 liar plant with slender culm (three to six inches high) much surpass- 

 ing the leaves, conspicuous staminate spike, and very obtuse scales to 

 both staminate and pistillate spikes. — St. Lawrence Isl., off Alaska, 

 Chamisso. 



179. Carex Richardsoni, R. Brown, Frank]. Narr. App. 763. 

 Named for Sir John Richardson of Arctic exploring fiime. — Near 



Rochester, New York, Dewey, Central Michigan, Wheeler, Illinois 

 and northwestward to Arctic America ; N. W. Coast, Douglas ; per- 

 haps also Bolander's 6478, from Mendocino Co., California. 



180. Carex pedunculata, Muhl. ; Willd. Sp. PI. iv. 222. 

 Lancaster Co., Pennsylvania, Porter, to New England and northwest- 

 ward to Norway House, British America, Drummond. Not common. 



181. Carex Baltzeleii, Chapman, List of Fla. Plants, 1845. 

 First detected in 1835 by Dr. Geo. F. Baltzell. — Dry sandy soil 



in Middle Florida. Rare. 



