Carex 



Cyperaceae 



2H7 



50 



Map 471 



Carex cristatella Britt, 



50 



Map 472 



Carex muskingumensis Schwein. 



o 50 



Map 470 



Carex tribuloides Wahl. 



~tt 



Map 473 



Carex leptalea Wahl. 



obstructed by undergrowth. Occasional in buttonbush swamps and wet 

 woods and on flood plains. Northward it is usually found with bur oak. 

 Ohio and Ky. to Man., Kans., and Ark. 



12. § POLYTRICHOIDEAE 



Perigynia 2.5-3.5 mm long, slightly overlapping; achenes lustrous, obtusely angled. . . . 



52. C. leptalea. 



Perigynia 4-5 mm long, strongly overlapping; achenes barely lustrous, sharply angled. . 



52a. C. leptalea var. Harperi. 



52. Carex leptalea Wahl. Map 473. Common in northern Indiana in 

 tamarack bogs and occasional in wet woods. Infrequent in central Indiana, 

 in swamps and on banks of streams. It is generally plentiful wherever 

 found and in tamarack bogs it is usually associated with Carex trisperma. 



Newf. to B. C, southw. to Pa., Mo., Colo., and Calif. 



52a. Carex leptalea var. Harperi (Fern.) Stone. (Carex Harperi 

 Fern.) Map 474. Rare in central and southern Indiana. In Indiana its 



