OF ARTS AND SCIENCES. 67 



Greenland, Vahl, fide Drejer ; Nottingham I., Hudson's Straits, Ma- 

 coun ; Bear Lake, Drummond ; Kamtschatka, Wright. Figured ia 

 Bot. Gaz. for August, 1885. 



18. Carbx rotundata, Wahl. Fl. Lapp. 235. 



Distinguished from the last by its firmer perigynium and involute- 

 filiform leaves. Andersson regards it as an extreme form of G. ros- 

 trata, With. (C. ampuUacea, Gooden.). — Arctic America : Slave Lake 

 and Fort Enterprise, Boott ; Greenland, Vahl, Warming & Holm. 

 Specimens from Ungava Bay, N. Labrador, Tamer, 1884, are evi- 

 dently this species. One of G. E. Smith's specimens from Moosehead 

 Lake, Maine, may belong here also. N. Europe. 



* * * Plants mostly large and stout. 



t- Perigynium not conspicuously turgid, sguarrose at maturity and the spikes 



comose in appearance. 



19. Carex rostrata, Withering, Arrang. Brit. PI. ed. ii. (1790). 



G. obtusangula, Ehrh. Calam. Exs. no. 50 (1791). 



G. ampuUacea., Gooden. Linn. Trans, ii. 207 (1792). 

 Mackenzie's River, Herb. ; Saskatchewan, Bourgeau, Macoun ; Ore- 

 gon, Lyall, and others ; Colorado, Ganhy., Hall & Harbour 615, and 

 others ; N. Michigan, Porter. Probably generally distributed through- 

 out British America, the Rocky Mountain region, and westward. 

 Europe. 



Var. UTRICULATA. 



G. utriculata, Boott, Hook. Fl. Bor.-Am. ii. 221. 



G. utriculata, var. minor, Boott, 1. c. ; Sartwell, Exsic. no. 153. 



G. ampuUacea, var. utriculata, Carey, Gray's Man. 1848, 566. 



G. utriculata, var. globosa, Olney, Bot. King's Rep. 374. 

 In bogs entirely across the continent north of Ohio. 

 G. Bongardiana, C. A. Meyei', ex Trautv. & Meyer, Fl. Ochot. 101 

 (C. vesicaria, Prescott in Bongard's Obs. Sitcha, 169), is evidently an 

 attenuated and long-beaked form of G. ampuUacea. Dr. Boott, how- 

 ever, regarded it as a form of G. vesicaria. — Sitka, Mertens ; Oregon, 

 Hall. 



•^ -^ Perigynia conspicuously turgid, ascending at maturity. ^ 



20. Carex monile, Tuckerman, Enum, Meth. 20. 

 G. Vaseyi, Dewey, Sill. Journ. xxix. 347. 



Common in wet places in all the Northern States east of Nebraska ; 

 Colorado, Vasey ; Ostrander's Meadow, California, Bolander 6211; 

 " Cumberland House to Bear Lake," Boott. 



