CYPERACEAE. 



VOL. I. 



215. Carex rhomalea (Fernald) Mackenzie. Moosehead Lake Sedge. Fig. 1082. 



C. miiiaris var. major Bailey, Mem. Torr. Club I : 36. 



1889. 



C. saxatilis var. rhomalea Fernald, Rhodora 3 : 50. 1901. 

 C. rhomalea Mackenzie, Bull. Torr. Club 37: 246. 1910. 



Culms slender, sharply triangular and roughened 

 above, reddened and but little if at all lilamentose at 

 base, 6'-2 tall; rootstocks creeping. Leaves \"-\\" 

 wide, strongly involute, usually shorter than the culm, 

 obscurely nodulose, roughened towards apex; lowest 

 bract narrower, shorter than or exceeding culm, 

 erect or spreading; staminate spikes 1-3, short- 

 stalked; pistillate spikes 1-3, ascending, suborbicular 

 to oblong, 4"-g" long, 2^"-3" wide, sessile or the 

 lower short-stalked; perigynia ii" long, oblong- 

 ovoid, yellowish-green or dark-tinged, few-nerved, 

 scarcely inflated, ascending, contracted into a short 

 emarginate beak ; scales ovate, obtuse, acute or 

 acuminate, light-brown to strongly blackish-tinged, 

 shorter than perigynia; stigmas usually 2. 



On lake and river shores, central Maine to Newfound- 

 land. Summer. Has been confused with C. saxatilis 

 L, and with C. rotundata Wahl. 



216. Carex saxatilis L. Russet Sedge. 

 Fig. 1083. 



Carex saxatilis L. Sp. PI. 976. 1753. 



Carex pulla Gooden. Trans. Linn. Soc. 3: 78. 1797. 



Glabrous, culms not filamentose at base, strongly 

 stoloniferous, erect, slender, 3'-2 tall. Leaves flat, 

 \"-2\" broad, obscurely nodulose, the upper not over- 

 topping the culm ; bracts short ; staminate spike usu- 

 ally solitary, short-stalked ; pistillate spikes 1-4, all 

 stalked or the upper nearly or quite sessile, subor- 

 bicular to oblong-cylindric, 4"-: 2" long, 3"-4$" 

 wide, densely i5-5O-flowered; perigynia dark purple- 

 brown or rarely straw-colored, ascending, ovoid, ii"- 

 2" long, scarcely inflated, nerveless or very faintly 

 few-nerved, ' tipped with a short emarginate beak ; 

 scales ovate, subacute, dark brown, shorter than or 

 as long as the perigynia ; stigmas usually 2, rarely 3. 



Greenland and Labrador to Alaska. Also in arctic 

 Europe and Asia. Summer. 



Carex ambusta Boott, admitted into our first edition, 

 is a far northwestern species not definitely known within 

 our range. 



217. Carex mainensis Porter. Maine Sedge. Fig. 1084. 



Carex pulla A. Gray, Man. Ed. 5, 602. 1867. Not 

 Gooden. 1797. 



Carex miiiaris var. aurea Bailey, Mem. Torr. Club i : 

 37. 1889. Not C. aurea Nutt. 1818. 



Carex mainensis Porter; Britton, Manual 193. 1901. 



Culms slender, smooth below inflorescence, little 

 filamentose at base, iJ-3 tall, the plant stolonifer- 

 ous. Leaves |"-ii" wide, flat, shorter than the culm, 

 somewhat nodulose and scabrous on the margins, the 

 lower bracts narrower, about equalling the culm ; 

 staminate spikes 1-4, slender-stalked ; pistillate spikes 

 1-3, erect, cylindric, 6"-is" long, 3"-4" wide, sessile 

 or the lower short-stalked ; perigynia about 2" long, 

 oblong-ovoid, yellowish-green, few-nerved, slightly 

 inflated, contracted into a rather conspicuous 2-toothed 

 beak ; scales lanceolate, acute or acuminate, yellow- 

 ish or brown-margined, slightly shorter than the peri- 

 gynia ; stigmas 2 or 3. 



On lake and river shores, central Maine to Labrador. 

 Possibly a hybrid between C. miiiaris and C. vesicaria. 

 Illustrated as Carex Raeana in first edition. Summer. 



