124 THE CAYUGA FLORA. 



Fall Cr. ravine and above Forest Home. Dryden-Lansing Swamp. 

 Malloryville. Round Marshes. Michigan Hollow and elsewhere. 



431. Muhlenbergia, Shreb. 



1 198. M. sobolifera, Trin. (H. and C.) 

 Rocky places ; not common. Aug. 



Fall Cr. Chiefly on the lake-shore declivities, where it grows in 

 beds. The leaves, when mature, stand at right angles from the 

 stem. 



1 199. M. glomerata, Trin. (C.) 

 Sphagnum swamps, and in ravines ; frequent. Aug. -Sept. 

 Buttermilk ravine. Larch Meadow and elsewhere Also in dry 



woods' on the Pinnacles near White Church. 



1200. M. Mexicana, Trin. (H. andC.) 

 Shaded places ; common. Aug. 



1201. M. Mexicana, Trin. var. filiformis, Vasey, is in Fall Cr. and 

 other ravines. 



1202. M sylvatica, Torr. and Gray. (H. and C.) 

 Moist soil ; frequent. Aug. 



1203. M. Willdenovii, Trin. (H. and C.) 

 Rocky places ; not common. Aug. 



Six Mile Creek, at the "Narrows." Enfield ravine. Thacher's 

 Pinnacle and elsewhere. 



1204. M. diffusa, Shreb. Nimble Will. (H. andC.) 

 In old orchards and fields ; frequent. Sept.-Oct. 



University Grove, and elsewhere on East Hill. Frequent on the 

 lakeshore points ; "Sheldrake," {Dr. Gray, 1S31.) 



432. Brachyelytrum, Beauv. 



1205. B. aristatum, Beauv. (H. and C.) 

 Ravines and low woods ; frequent. July. 



The form "var. Engelmanni" was found in Fall Cr. by Mr. Hine. 



433. PhlEum, Linn. 



1206. P. pratense, L. Timothy. (H. and C.) 

 Fields ; common. June. 



Since 1872 we have noticed autumnal specimens of this species 

 with spikes bearing numerous viviparous flowering glumes ("lower 

 palets.") It seems to be a case perfectly parallel to that of Poa al- 

 pina, on which Mohl based his important theor}' of the structure of 

 the spikelet. The flowering glume develops into a complete leaf 

 with sheath, ligula, and a bright green blade i-iyi cm. long. The 

 plants are usually growing in moist soil, and only the second growth 

 of the season becomes viviparous. The same monstrosity appears 

 rarely in the autumnal spikes of Dacty 'lis. Viviparous /'/i/t/n//s have 

 been observed in the Hudson R. valley by Gerard and in New Eng. 

 434. Sporobolus, R- Br. 



1207. S. vaginaeflorus, Torr. {Vilfa vagincvflora, Man., p. 609. (C.) 

 Sandy or gravelly soil. Sept. 



Near Fall Cr. mills and near Triphammer Falls. Abundant on 

 the lakeshore banks, near Ludlowville, Aurora, Sheldrake, etc. 



