302 COlSTTRIBUTIOISrS FROM THE NATIONAL HERBARIUM. 



long, with 5 to 10 perigynia; scales strongly bright white margined; perigynia 3 mm. 

 long, obovoid-globose, rounded on the angles. 



30. Carex scirpoidea Michx. Near a snow bank on Altyn Mountain; wet mossy 

 cliffs at Baring Falls. Greenl. to Alaska, south to N. Y., Mich., Mont., and B. C. — 

 Rootstocks creeping; culms 20 to 35 cm. liigh, purplish at base; spikes 1.5 to 3 cm. 

 long; scales ciliate; perigynia 3 mm. long, flattened-triangular, short-beaked. 



31. Carex rossii Boott. Frequent on the east slope at middle altitudes, in deep 

 woods or in wet meadows. Mich, to Yukon, south to Colo, and Calif. — Rootstocks 

 stout; culms 5 to 25 cm. high, wiry; leaf blades 1 to 2.5 mm. wide; staminate spike 

 conspicuous, 3 to 10 mm. long; perigynia 3.25 to 4.5 mm. long, strongly stipitate, the 

 beak deeply bidentate. 



32. Carex aurea Nutt. At low and middle altitudes in moist soil, usually at the 

 edge of water; infrequent. Newf. to Yukon, south to Conn., Mich., N. Mex., and 

 Calif. — Leaf blades 2 to 4 mm. wide; bracts sheathing; pistillate spikes 2 to 5, on 

 erect exserted peduncles; scales usually reddish brown tinged; perigynia ascending, 

 broadly oval, 2 mm. wide, many-nerved, subumbonate. 



33. Carex capillaris L. Occasional on open rocky slopes just below Sperry Glacier. 

 Greenl. to Alaska, south to N. H., Mich., Colo., and Nev.; also in Eurasia. — Culms 5 

 to 60 cm. high, slender; leaf blades 1 to 2 mm. wide; pistillate spikes 2 to 4; scales 

 broadly hyaline-margined; perigynia ovoid, appressed, 2.5 to 3 mm. long, the beak 

 slender, conic. 



34. Carex Umosa L. Abundant in sphagnum bogs at Johns and Fish lakes. Lab. 

 to Alaska, south to N. J., Iowa, Mont., and Wash.; also in Eurasia.— Culms 15 to 60 

 cm. high, sharply triangular; leaf blades glaucous, 1.5 to 3 mm. wide; pistillate 

 spikes 8 to 30-flowered; scales acute or short-cuspidate; perigynia broadly ovate, 

 flattened, 2-edged, 2.5 mm. long, several-nerved. 



36. Carex buxbaumii Wahl. Boggy meadow along Swiftcurrent Creek below Lake 

 McDermott; abundant in sphagnum bog at Johns Lake. Greenl. to Alaska, south 

 to Ga., Ark., Colo., and Calif.; also in Eurasia. — Culms 20 to 90 cm. high, strongly 

 reddish purple at base; lower sheaths filamentose; leaf blades 2 to 4 mm. wide; 

 scales awned; perigynia numerous, shorter than scales, 3 to 4 mm. long, lightly 

 many-nerved. 



36. Carex parryana Dewey. Open rocky slope at Gunsight Pass. Hudson Bay to 

 Alta., south to N. Dak. and Colo.^Stoloniferous; culms 10 to 35 cm. high; leaf 

 blades 2.5 to 4 mm. wide; spikes 1 to 5, approximate; perigynia 2.5 mm. long, flattened 

 and sharp-edged, the beak minute, bidentulate. 



37. Carex podocarpa R. Br. Abundant in moist meadows and on rocky slopes 

 above timber line; occasionally found on moist rocky slopes at lower altitudes. 

 Northern Alaska, south to Mont, and Idaho.— Rootstocks stout; culms 20 to 40 cm. 

 high, slender; leaf blades 2 to 4 mm. wide; pistillate spikes 2 to 4, oblong or linear- 

 oblong, drooping; pistillate scales brownish black, the midvein nearly obsolete; 

 perigynia ovate, flat, nerveless, 4 mm. long; achenes stipitate. 



38. Carex tolmiei Boott. Abundant above timber line, in meadows and on rocky 

 slopes. Alta. to Alaska, south to Wyo. and Wash. — Rootstocks tough, densely matted; 

 culms 25 to 50 cm. high; leaf blades 2.5 to 4.5 mm. wide; pistillate spikes 3 to 6, 

 spreading, oblong; pistillate scales with conspicuous midvein; perigynia flat, 3 mm. 

 long; achenes short-stipitate. 



Both this and C. podocarpa are common in all the alpine meadows, and they are 

 very conspicuous because of their handsome dark spikes. 



39. Carex raynoldsii Dewey. Frequent on the east slope in woods or thickets, at 

 low and middle altitudes, and on open slopes above timber line. Alta. to Wash., 

 south to Colo, and Calif. — Rootstocks stout; culms 20 to 40 cm. high; leaf blades 



