CYPERACEAE (SEDGE FAMILY) 



239 



so and exceeding the culm; spikes 2-3, approximate, all slen- 

 derly stalked, spreading or drooping, 4-8 mm. long ; perigynia 

 orbicular or broad-ovate, nerved in the middle, ^-| the length 

 of the castaneous scales, — Alpine bogs, e. Que. Aug. 



Var. irrlgua (Wahlenb.) Fernald. Taller, 1-8 dm. high; 

 culm glabrous; spikes cylindric, 1-1.6 cm. long; scales cas- 

 taneous. (C. magellanica Man. ed. 6, not Lam.) — Bogs, 

 Arctic regions, s. to Mass., Pa., Ont., and Utah. June-Aug. 

 (Eu.) Fig. 466. 



Var. pdllens Fernald. Tall, the culms usually 

 scabrous ; spikes cylindric, 1-1.8 cm. long ; scales 

 green with pale brown or yellowish margins. — 

 Bogs and mossy woods, e. Que. to B. C, s. to Ct., 

 N. Y., Mich., and Minn. June, July. 



112. C. limbsa L. Slender but rather stiff, 

 1.5-6 dm. high, very stoloniferous ; culm sharp, 

 rough above; spikes 1-2, nodding on short stalks or the upper one 

 erect, subcylindric, 1-2.5 cm. long, springing from the axil of a 

 very narrow bract which is nearly always shorter than the culm • 

 perigynia very short-pointed, aboiit the length of , ' 



the broad brown or purplish scales. — Bogs, e. Que. 

 to Sask. and B. C, s. to Fa., Great Lake region. 



limosa. 



Col., and Cal. 

 113. C. rariflbra Smith. 



May-Aug. (Eu.) Fig. 467. 

 Very small but stiff, 0.7-3.5 dm. 



high, slightly stoloniferous ; culm obtuse and very smooth ; spikes 

 1-3, only 3-10-flowered, drooping, 

 borne in the axil of a minute awl-like 

 and purple-auricled bract; perigynia 

 ovate, nearly pointless, obscurely 

 nerved, mostly a little shorter than ^^^- ^- '"''^'i^^'^'^- 

 the purple-black enveloping scales. — Cold bogs and 

 granitic slopes, Arctic regions ; very locally s. to 

 Gulf of St. Lawrence ; Table-topped ]\It., Gasped Co., 

 Que.; and Mt. Katahdin, Me. (Goodale). (Eu.) 

 Fig. 408. 



114. C. littoralis Schwein. Somewhat slender 

 but erect, 4-9 dm. high, stoloniferous ; leavesZ-Q mm. 

 broad, stiff, flat, glaucous, shorter than the sharp 

 and nearly smooth often solitary culms ; staminate 

 spikes l-.S, dark purple, 5.5 cm. long or less, the 

 scales obtuse ; ])istiUate spikes 1—4, 

 somewhat approximate, on thread- 

 like peduncles, narrowly cylindric 

 (2-5 cm. long, b-1 mm. thick), usu- 

 ally staminate at top ; perigynia 

 lance-oval, faintly nerved, the minute 

 beak entire, mostly longer than the 

 obtuse purple scale; bracts promi- 

 nently purple-auricled. — Wet woods 

 and bogs, oftenest near the coast. 

 May, June. Fig. 469. 



115. C. prasina Wahlenb. Slender, somewhat flexuous, 3-7 

 dm. high ; culm rather sharp, srqooth ; leaves 2.5-5 mm. wide, 

 soft and flat, rough ; spikes 2-4, linear-cylindric, peduncled and 

 spreading or drooping, somewhat approximate, green, 1.5-6 cm. 

 long, loosely flowered ; perigijnia pale, thin, nearly nerveless, produced into a 

 short but slender entire or minutely toothed beak; scale very thin and acute, 

 nearly colorless. — Wet woods and glades, w. Me. to Ont., Mich., D. C, and 

 Del. ; and along the mts. to Ga. May-July. Fig. 470. 



116. C. picta Steud. Rather weak» 1.6-3 dm. high ; leaves flat and Jirm, 



C. littoraHs. 

 Ct., and south w., local. 



praaii 



