The Flora of the Cayuga Lake Basin 115 



Subgenus 1. Primocarex 



1. C. leptalea Wahl. (C. polytrichoides of Cayuga Fl.) 

 Boggy and springy places ; common. June. 



Lab. to Alaska, southw. to Pa., Fla., La., Tex., Colo., and Oreg. ; frequent on the 

 Atlantic Coastal Plain. 



2. C. pauciflora Lightf. 



In the sphagnum of acid peat bogs ; rare. June. 



McLean Bogs (£>.!) ; Malloryville Bog; sphagnum clumps, Mud Creek, Free- 

 ville; Junius (Sartzvell). 



Lab. to Alaska, southw. to Conn., Pa., Mich., Minn., and Wash. 



| C. gynocrates Wormsk. 



Swamps, Savannah, Wayne Co. (Sartwell in Herb. Hamilton Coll.), according to 

 Paine's Flora of Oneida Co., N. Y. Not seen since.] 



Subgenus 2. Vigna 



Section 1. Acroarrhenae 



3. C. stipata Muhl. 



Meadows and the borders of bogs, in rich, slightly acid or neutral, soils ; very 

 common. June. 



Newf. to B. C, southw. to Fla., Tenn., Mo., N. Mex., and Calif., including the 

 Atlantic Coastal Plain. 



4. C. laevivaginata (Kiiken.) Mackenzie. 



Boggy meadows and springy places ; frequent. June. 



Enfield Glen ; hillside n. of Caroline Center ; Ellis Hollow Swamp ; border of 

 Mud Pond, McLean Bogs ; Mud Creek, Freeville ; Big Gully. 



Mass. to N. Y. and N. C. 



The strongest of the characters cited by Fernald (Rhodora 17:231. 1915) appears 

 to be the length of the perigynium (5-7 mm. long in C. laevivaginata, 4 mm. long 

 in C. stipata). The truncate firm upper border of the sheath is a good character also. 

 The lack of puckering in the sheath is fairly constant, the sheath in C. laevivaginata 

 being occasionally puckered, while in C. stipata the puckering is sometimes absent. 

 The leaves of C. laevivaginata do not seem to be narrower than those of C. stipata, 

 as stated by Fernald. 



5. C. contigua Hoppe. (See Bui. Torr. Bot. Club 50:346. 1923. C. muricata of 



Amer. authors.) 



Dry sandy fields and roadsides, mostly in calcareous or saline localities ; rare. 

 June. 



Streets and lawns, East Hill, Ithaca, and C. U. campus ; shore of Cayuga Lake at 

 Howland Point ; Stone Mill, Union Springs ; n. e. of Montezuma village. First col- 

 lected in 1918, at Howland Point. 



S. Me. to Ohio, southw. to Va. Naturalized from Eu. 



6. C. retroflexa Muhl. 



Dry rocky and stony soil of weathered residual sandstone; scarce. June. 



Upper terrace, South Hill ; s. of Van Natta Dam, Six Mile Creek ; n. w. of Eddy 

 Dam (D.) ; Renwick slope and McKinney slope; Esty Glen; Taughannock Gorge. 



Mass. to Mich., southw. to Fla. and Tex. ; apparently rare or absent on the Coastal 

 Plain. 



7. C. convoluta Mackenzie. (Bui. Torr. Bot. Club 43 : 423. 1916. C. rosea of Gray's 



Man., ed. 7, and of Cayuga Fl.) 

 Dry grassy banks and woods, on rich sandy, gravelly, or stony soils, in acid and 

 apparently also in calcareous regions ; frequent. May 25-June 20. 



