2 58 



Cyperaceae 



Carex 



Carei Swanii (FernJ Mack. 



103. Carex hirsutella Mack. (Carex triceps var. hirsuta (Willd.) 

 Bailey; "Carex complanata" Mack., not Torr., in Britton and Brown, Illus. 

 Flora, ed. 2.) Map 530. Common in southern Indiana, usually in sterile soil, 

 in dry open woods and fallow fields and along sandy roadsides ; infrequent 

 in low or flat woods; becoming less frequent northward and rare in the 

 northernmost counties. 



Maine to Mich., southw. to Ala. and Tex. 



104. Carex caroliniana Schwein. (Carex triceps var. Smithii Porter.) 

 Map 531. Frequent in southern Indiana in low flat woods and in clay soil 

 in fallow fields. 



N. J. to N. C. and Tex. 



105. Carex Bushii Mack. (Bull. Torrey Bot. Club 37: 241. 1910.) Map 

 532. Known in Indiana only from three stations, found by Deam, all in the 

 unglaciated area. It is common in the Posey County locality in low, open 

 post oak flats south of Half Moon Pond, 9 miles southwest of Mount 

 Vernon. The two localities in Spencer County are in a low fallow field 

 one mile north of Bloomfield (4 miles northwest of Chrisney), and in a 

 low, open pin oak and post oak flat two miles southeast of Dale. 



Mackenzie has pointed out the marked general resemblance of this 

 species to the wholly unrelated Carex Buxbaumii. 

 Mass. to Mich., southw. to D. C, Miss., and Tex. 



30. § HlRTAE 



Leaf blades fiat, 2-5 mm wide; culms sharply triangular; achenes straight-apiculate. 



106. C. lanuginosa. 



Leaf blades involute-filiform, 2 mm wide or less; culms obtusely triangular; achenes 



bent-apiculate 107. C. lasiocarpa. 



106. Carex lanuginosa Michx. Map 533. Common in northern Indiana 

 in swamps, sloughs, wet ditches, open swampy woods, and on lake borders ; 

 infrequent in southern Indiana. This, like the following species, is usually 

 plentiful where found, often being the dominant plant in a marsh or on a 



