The Flora of the Cayuga Lake Basin 129 



S. Me. to Minn., southw. to N. C. and Ark.; infrequent or rare on the Coastal 

 Plain. 



Variable in plumpness of perigynium and in breadth of leaf, approaching var. 

 rigida Bailey or var. angustifolia Boott in shady places. In the Cayuga Lake Basin, 

 at least, these variations are apparently ecological. 



84. C. glaucodea Tuckerm. 



Damp sandy or gravelly acid soils ; rare. June. 



Dry water-holes and grassland about South Hill Marsh, with Lyonia ligustrifta 

 and Primus susquehanae, where it is a member of the very interesting colony of rare 

 plants found there ; also on the n. e. slope of South Hill. 



E. Mass. and Vt. to Va., and westw. along the Great Lakes to 111. and Ark. ; fre- 

 quent on the coastal plain of N. J. 



85. C. eburnea Boott. 



Dry or damp ledges and banks, in calcareous soils along ravines, and in marly 

 places; frequent. May 15-June 20. 



Lower Enfield Glen; n. of Lick Brook; Six Mile Creek; Cascadilla Creek (D.) ; 

 near Triphammer Falls (D.\) ; Salmon Creek; Taughannock Gorge; glen one mile s. 

 of Willets ; King Ferry. 



Newf. to Mackenzie, southw. to Va., Ky., Mo., and Nebr. ; rare or absent on the 

 Coastal Plain. 



86. C. capillaris L. (Including var. elongata OIney.) 



Mossy and gravelly calcareous shores and springs ; very rare. 



" On half -submerged logs west side of the principal ' Marl Pond,' South Cortland, 

 1884" (£>.). [Otter Creek Springs, Cortland, 1869, S. M. CowlesA) As late as 1896 

 there were a number of clumps on decaying logs in Otter Spring. Since then improve- 

 ments about Otter Spring, from which the city of Cortland derives its water supply, 

 have probably exterminated this rare plant, not elsewhere reported in N. Y. State. It 

 seems to have disappeared also from the marl-pond station. 



Newf. to Alaska, southw. to s. N. B., Me. (?), N. Y., Mich., and in the mts. to 

 Colo, and Utah. Found also in Eurasia. 



87. C. arctata Boott. 



Rich woods and copses, in gravelly calcareous soils ; infrequent. May 20-June. 



Near Dry Run Valley and Signer Woods, Spencer ; around Michigan Hollow 

 Swamp; low woods e. of Slaterville; near Willow Glen; Freeville (D. in C. U. 

 Herb.) ; woods around McLean Bogs; and elsewhere. 



Newf. to Ont., southw. to Pa., Mich., and Minn. ; rare or absent on the Coastal 

 Plain. 



88. C. debilis Michx., var. Rudgei Bailey. (C. debilis, nos. 1132 and 1133, of 

 Cayuga Fl.) 



Dry or damp gravelly woodlands and thickets, in neutral or calcareous soils ; 

 scarce. June. 



Caroline; Turkey Hill; meadow s. e. of Etna (D.) ; near Freeville Bog (jD.!); 

 Lake Como ; "Marl Cr., Marl Pond woods" (D.) ; Dryden-Lansing Swamp (D.) ; 

 Bear Swamp (D.). 



Newf. to Wis., southw. to N. C. 



This plant, so common on the Coastal Plain from Mass. to N. J., grows there in 

 sandy acid soils, while here it is found mostly in calcareous soils. Two separate 

 plants may be involved. Dudley has recognized two varieties, which cannot now be 

 distinguished. 



