The Flora of the Cayuga Lake Basin 131 



96. C. HIRTA L. 



Gravelly and stony soils, in railroad ballast ; very rare. 



D., L. & W. R. R. roadbed on South Hill w. of Aurora St., "detected 1882, but may 

 have been growing there for ten years" (D.) ; same station, 1894-1900 ( K. M. IV.) ; 

 Ithaca, 1868 (H. B. Lord in C. U. Herb.). 



E. Mass. to cent. N. Y. and Pa. ; local. Adventive from Eu. 



97. C. trichocarpa Muhl. 



Swales and marshes, mostly in alluvial calcareous soils ; frequent. June-July 10. 



Inlet, between Newfield and Enfield Creeks and near Ithaca; near Renwick; Beebe 

 Lake (D.) ; n. of Freeville (D.) ; Ludlowville (D.) ; Myers Point; and elsewhere; 

 often in large colonies. 



Que. and Vt. to Ont., southw. to Ga. and Mo. ; not coastal. 



98. C. riparia Curt., var. lacustris (Willd.) Kiiken. (See Kukenthal in Das 

 Pflanzenreich, pt. 4, sect. 20, p. 736. 1909. C. riparia of Cayuga Fl. C. lacus- 

 tris of Britton & Brown's 111. Fl.) 



Swales and marshes, in mucky neutral or usually slightly calcareous soils ; infre- 

 quent. June-July 10. 



Michigan Hollow Swamp ; Inlet Valley, s. of Enfield Creek ; Larch Meadow ; 

 Cayuta Lake; Indian Spring marsh; Ellis Hollow Swamp; Beaver Brook; McLean 

 Bogs ; Miller Bog, Spring Lake ; arbor vitae swamp e. of Clyde. 



Newf. to Man. and Idaho, southw. to Fla., La., and Tex.; infrequent and local on 

 the Coastal Plain. Found also in Eu. 



99. C. vesicaria L., var. monile (Tuckerm.) Fernald. (C. monile, and probably also 



C. ampullacea, of Cayuga Fl.) 



Swales and pools, in mucky soil over calcareous gravels ; scarce. June-July. 



Slaterville Swamp; near Freeville station; Woodwardia Bog to Mud Creek, Free- 

 ville; Cortland marl ponds and Chicago Bog region; Lake Como (Locke Pond, D.) ; 

 road southw. from Pout Pond (D.). 



Newf. to Sask., southw. to Conn., N. Y., Ky., and Mo. ; infrequent on the Coastal 

 Plain. 



100. C. Tuckermani Dewey. 



Exsiccated ditches and swales, in more or less calcareous soils; scarce. June 15- 

 July. 



Headwaters Swamp (C. P. Smith) ; Slaterville Swamp ; marly pond w. of Cayuta 

 Lake; West Hill, Ithaca (Smith) ; Ithaca flats; Fall Creek, n. e. of Varna; Ringwood 

 Hollow; Fir Tree Swamp, Freeville; near Ludlowville (H. B. Lord); Clyde River 

 flats, s. w. of Clyde. 



N. B. to Que., Ont., and Minn., southw. to n. N. J., Ind., and Iowa; rare or absent 

 on the Coastal Plain. 



All specimens except those from Headwaters Swamp and Fir Tree Swamp agree 

 well with Smith's var. nia'garensis (see Rhodora 17:57. 1915), but a study of this 

 variety in the larger herbaria has failed to support its validity. 



101. C. retrorsa Schwein. 



Swales, in gravelly alluvial, more or less calcareous, soils; frequent. June 15-July. 



Renwick woods; w. of Jacksonville; Taughannock Point; roadside w. of Willets ; 

 Big Gully Point; and elsewhere. 



E. Que. to Sask. and B. C, southw. to Conn., Pa., the Great Lakes, Iowa, Idaho, 

 and Oreg. ; rare or absent on the Atlantic Coastal Plain. 



