CKYPSIS. — VILFA. 139 



1. PhleumPratense, Linnceus (Timothy Catstail). 

 See page 19. 



2. Yb.jsejjsl Ahvusvn.IAnncEus (Mountain Catstail). 

 Alpine tops of the White Mountains, New Hamp- 

 shire, and high northward. 



5. CRYPSIS-Aiton. Crypsis. 



GENERIC CHARACTER. 



Spikelets 1 -flowered, in clusters which are crowded 

 in a dense head or short spike, bracted by the upper- 

 most leaves ; glumes, palets, etc., as in the next 

 genus, or rather thinner. Low and spreading-tufted 

 annuals, natives of the East, with short leaves ; the 

 sheaths of the upper spathaceous. 



(A Greek name, '' concealment.") 



The spikes, at first, are partly hidden by the sub- 

 tending sheaths. 



1. Crypsis Schoenoides, Lam. Waste places, 

 streets of Philadelphia and vicinity ; also Wilming- 

 ton (Delaware) common. 



6. YILFA — Adanson, Pd' Beauveois. Push Grass. 



GENERIC CHARACTER. 



Spikelets 1 -flowered, in a contracted or spiked pan- 

 icle ; glumes 1 -nerved or nerveless, not awned or 

 pointed, the lower smaller ; flower nearly sessile in 

 the glumes ; palets 2, much alike, of the same texture 

 as the glumes (membranace chartaceous), and usually 



