The Flora of the Cayuga Lake Basin 117 



Frequently confused with the species next following, from which it differs in the 

 more yellow-green color, short dense inflorescence, narrower perigynia, and shorter 

 scales (perigynia narrowly ovate; beak about as long as the body; scale shorter than 

 the body). 



13. C. sparganioides Muhl. 



Rich wooded slopes, mostly in calcareous regions ; frequent. June. 



Michigan Hollow; Inlet Valley slopes; Six Mile Creek; McGowan Woods; Mud 

 Creek woods; McLean; Salmon Creek ravine; Paine Creek; Big Gully; w. of How- 

 land Island ; and elsewhere. 



N. H. to Ont., southw. to Va. and Mo.; apparently absent on the Coastal Plain. 



14. C. alopecoidea Tuckerm. 



Ditches and meadows, in gravelly calcareous regions ; scarce. June. 



Spencer Lake; near East Ithaca station (D.\) ; e. of Freeville (D.) ; near Marl 

 Creek, Cortland (D.) ; Myers Point (D. in C. U. Herb.); n. of _ Ludlowville 

 (F. C. Curtice) ; Taughannock Point ; glen one mile s. of Willets ; Union Springs ; 

 Frontenac Island (D.) ; West Junius (D.). 



Me. to Ont. and Mich., southw. to Pa. and 111. ; absent in granitic N. E. and along 

 the coast. 



15. C. vulpinoidea Michx. 



Open swales and meadows, in both calcareous and noncalcareous soils ; common, and 

 generally distributed. July. 



Newf. to Man., southw. to Fla., La., Nebr., and Tex., including the Coastal Plain. 



16. C. annectens Bickn. (See Bui. Torr. Bot. Club 23:23. 1896. Britton & 

 Brown's 111. Fl., ed. 2, 1:369. 1913. C. setqcea Dewey, var. ambigua (Bar- 

 ratt) Fernald.) 



Dry or damp sandy acid soils ; rare. July. 



South Hill Marsh, with Primus susquehanae and Lyonia ligustrina ; e. of Slaterville 

 Swamp, abundant ; hilltops s. w. of Dryden Lake and n. and w. of Caroline Center ; 

 n. e. of Montezuma village. 



Me. to N. Y. and Md., mostly on the Coastal Plain ; also in Iowa and Mo. 



This species differs from C. vulpinoidea in the shorter leaves and the broader, 

 shorter-beaked perigynia, the beak being shorter than the body. 



16a. C. annectens Bickn., var. xanthocarpa (Bickn.) Wiegand. (See Rhodora 

 24:74. 1922.) 

 In situations similar to the preceding ; rare. 

 Sedgy field e. of Slaterville Swamp, 1919. 

 W. N. H. and cent. Conn, to 111. and Iowa, southw. to Va., Ohio, and Mo. 



17. C. diandra Schrank. (C. teretiuscula of Cayuga Fl.) 



Very wet places in marl bogs, and on the shores of marl ponds; scaice. June. 



Summit Marsh; Larch Meadow (D.) ; Fleming Meadow; Freeville Bog (D. !) ; 

 Mud Pond, McLean Bogs (D. !) ; Lake Como (Locke Pond, D.). 



Lab. to Alaska, southw. to Conn., Pa., Mich., Nebr., and B. C. ; rare on the Atlan- 

 tic Coastal Plain. Found also in Eurasia. 



18. C. prairea Dewey. (See Britton & Brown's 111. Fl., ed. 2, 1 : 370. 1913. 

 C. teretiuscula, var. major, of Cayuga Fl. C. t., var. ramosa, of authors. 

 C. diandra, var. ramosa, of Gray's Man., ed. 7. 



In situations and soils similar to the last-named ; scarce. June. 



Larch Meadow ; Fleming Meadow ; Mud Pond, McLean Bogs ; Lake Como ; Spring 

 Lake ; Lowery and Newton Ponds. 



E. Que. to B. C, southw. to Conn., Pa., Ky., 111., Minn., and Utah ; apparently 

 absent on the Atlantic Coastal Plain. 



