North American Cyperacca. 427 
Hab. Hudson's Bay, Dr. /i/c7mrJso?z/ /3. Carlton House, 
Dr. Richardson '■ — We are inclined to think that the terminal 
spike is not constantly androgynous in the Carctlco ofDewey ; 
and, although the specimen is immature, we see no other im- 
portant difference between it and C. Purrycma. 
161. C. BLEPHAROPHORA, Gray! ill ann. lye. nat. hist. 
New York, 3. p. 235, ^ Grain. ^Cyp. part 2. no. 185; Dewey! 
car. I. c. 30. p. 59. 
Hab. Oneida County, New Yoik, Dr. Gray ! 
162. C. MiLiACEA, Muhl. in Willd. sjp. 4, p. 290 ; Schkuhr, 
car. f. 151. 
Hab. Canada ! to Georgia ! 
163. C. PALLESCENS, Linn. ; Schknhr, car. f. 90. 
Hab. British America ! and Northern States ! 
164. C. umbellata, Schhihr, car. f. 171 ; Dcircy! car. 
I. c. 10. p. 31. & {var. vicina) 11. p. 317, & 10. t. 1. f. 13. 
Hab. Pennsylvania ! to British America ! and Rocky 
Mountains ! 
22r UNCINIA, Persoon. 
Spikes solitary or several, pistillate below. Stamens 3. 
Pistillate flowers solitary in the axil of each scale. 
Style 3-cleft. Nut trigonous, furnished with a hypogynous, 
usually exerted and hook-shaped seta ; the whole invested 
with a membranaceous perigynium. — Habit of Carex. 
Uncinia, Pers. syn. 2. p. 534 ; R. Broxvv, frodr. 1. p. 
241 ; Lestih. ess. Jam. Cyp. p. 22. no. S ; N. ab Esenb. in 
Wight's contrib. p. 72 ; and in Linncea, 9. p. 20. & 10. p. 206. 
Species of Carex, Linn. SchJcuhr, &c. 
