

THE CAYUGA FLORA. 121 



1 1 64. P. capillare, L,. Old-witch grass. 

 Cult, soils ; common. Aug. -Oct. 



A form with spindle-shaped spikelets and all parts slenderer than 

 type is frequent on the lake shore. 



1 165. P. virgatum, \,. 



Near Cayuga L,. ; rare. Aug. 



Farley's Point, a single cluster, 1SS1. " Cayuga Marshes," [Sari- 

 well, in Paine 's Cat, p. 173.) 



1 166. P. latifolium, Muhl. (H. and C.) 

 Woods ; frequent. July. 



Beside the typical form, a slender one is frequent, usually 

 branched and destitute of hairs at the joint, leaves elongated-lan- 

 ceolate. It is abundant in Case. Woods, and elsewhere. 



1 167. P. clandestinum, L,. (H. and C.) 

 Rare ; only in the border of the woods near the brook north of 



the " Nook." Possibly introduced here. 



1168. P. microcarpum, Muhl., var. sphaerocarpon, Vase} 7 . 



Rare ; woods near the road between the W. Junius ponds and 

 Geneva. 



1 169. P. nervosum, Muhl. {P. commutatnm, Schultz. Vasey, Cat. 

 of 1885, p. 9O 



Woods ; not rare. July. 



Resembles broad-leaved forms of P. dichotomum, L. Culms are 

 30-40 cm. ; smooth ; leaves elongated, lanceolate-acuminate, 8-15 

 cm. long, \-\% cm. wide; scabrous near the margins, and ciliate 

 with long hairs near the base and along the sheaths ; panicle rather 

 ample ; spikelets 2 mm. long, slightly hair} 7 . Case. Woods. Fall 

 Creek Woods. Near South Hill Marsh. Near White Church. Coy 

 Glen, {Prof. W. Trelease) ! 



1 170. P. xanthophysum, Gray. 



High hills in dry woods ; rare. July 1-25. 



Summit of the South Pinnacle, Caroline. Thacher's Pinnacle, 

 W. Danby. (Near Painted Post, Miss Arnold.) 



1171. P. dichotomum, L. (H. and C.) 

 Woods and dry banks ; common and variable. July, Aug. 

 Among the less hairy forms belonging to the type is the provis- 

 ional var. viride, Vasey, growing in woods slender, with narrow 

 leaves which spread from the culm at right angles. 



1 172. P. dichotomum, L,. var. nitidum, Gr. 



Case, and Fall Creek Woods, and elsewhere ; frequent. 



1173. P. dichotomum, L,. var. pubescens, Vasey, (P. pubescens ? Man. 

 649,) may at present stand for a large number of more or less 

 hair} 7 forms frequent in this region. The hairs in some, extend up 

 the peduncle into the panicle ; all have hairy flowers. This spe- 

 cies needs a thorough revision. 



1174. P. depauperatum, Muhl. (H. and C.) 

 Woods and banks ; frequent. June. 



