nS THE CAYUGA FLORA. 



1 138. C. filiformis, L. (C.) 

 Sphagnum swamps, where it is frequent. June. 



1 139. C. filiformis, L., var. latifolia, Boeck., (C. lanuginosa, Man., p. 

 595.) (H. and C.) 



Borders of most of our sphagnum marshes ; also near the shore 

 on Parley's Point and in marsh north of Union Springs. 



1 140. C. riparia, Curtis. (H. and C.) 

 Sedgy sphagnum swamps, where it is frequent. June 15-July. 

 It also occurs in springy soil on the Inlet and other marshes. 



1141. C. HIRTA, L. 



Introduced by D. L. and W. railroad, on South Hill east of the 

 " Incline," where it is spreading vigorously. Detected 1S82, but 

 may have been growing there for ten years. It is a native of Europe 

 and Asia. Elsewhere introduced in Amer. only at Philadelphia, 

 and in Mass, Among our native species, its closest affinity 

 seems to be with C. trichocarpa, with which it agrees in its running 

 rootstocks, hairy perigyna, and its scale. It is a much lower plant 

 than that species, its leaves and sheaths are soft-hairy, and the pis- 

 tillate spikes remote and scattered. The length of the perigynium 

 is 6-7 mm., and the scale is aristate. 



1 142. C. trichocarpa, Muhl. (H. and C.) 

 Along the larger marshes or lakes ; infrequent. June 20-July. 

 Fall Cr., Beebe Pond. Marshes about Ithaca. Ludlowville. 



North of Freeville, and elsewhere. 

 [C. trichocarpa, Muhl., var. imberbis, Carey, at Penn Yan, Gray's 

 Man., p. 597.] 



1 143. C. comosa, Boott. (H. and C.) 

 Borders of ponds ; not common. July. 



Marshes along Cayuga St. Round Marsh Pond. Cayuta L. and 

 elsewhere. 



1 144. C. comosa, Boott. X C. tentaculata, Muhl., was found near W. 

 Danby. 



1 145. C. Pseudo-Cyperus, L. X C. hystricina, YVilld. ? 

 Near the Pout Pond, W. Junius. 



Both of these apparent hybrids present intermediate characteris- 

 tics between the supposed parent species, and both have well-devel- 

 oped but enapty perigynia. In the case of the former, (No. 1 1 44, | 

 the two parents were growing in the closest proximity. 



1 146. C. Pseudo-Cyperus, L. (H. and C.) 

 Rare ; at Locke Pond ; (and by the Erie Canal, east of the Lock- 

 pit. ) Win. Boott's view, viz: that C. comosa should be reduced to 

 a variety ©f this species, is no doubt the correct one. 



1147. C. hystricina, Willd. (H. and C.) 

 Open meadows ; frequent. June 15-30. 



Along Cayuga L., the upper spike is occasionally androgynous, 

 and all the spikes more or less compound. 



1148. C. tentaculata, Muhl. (H. and C.) 

 Meadows and swamps ; common. July- Aug. 



