066 POACE.E. 



New York, Clinton for Dr. Chi He U'.Ml; Delaware, Martinilale; 

 District of Columbia, McCarthy; Micliigau (Fliut), Dr. Clarke 

 (Rolliu) Beal 



River-banks, New England to Minnesota and southward. 



145. (276). ASPEBELLA llunib. Roeni. & Ust. :Ma«,'. ]>art 7, 3: 

 6 (1790). Ifiistrix Ma'ucli, Metli. 294 (1794). Giimioslii-lnim 

 Sclircb. licsclir. Griics. '.' : 127, t. 47 (1810). Asprella Will.l. Eiiuni. 

 llort. lierol. i:}2 (180!»). 



Spikelets 1-4-flowi'red, 2 or rarely J in number, sessile at the 

 nodes of the excavated racliis of the simple spike, rachilla urtieulato 

 below the florets, which are perfect or the ujiper imi)erfect. Em])ty 

 glumes 0, or represented by 1-2 small spines below the K]>ikelets; 

 floral glume narrowly lanceolate, involute, firm, round on the back, 

 5-nerved above, extending into an awn; palea shorter than the 

 glume, 2-keeled. Stamens 3. Styles very short, distinct, stignuis 

 jdumose. Grain narrow, oblong, villous at the apex, grooved on 

 the inside, adhering to the palea. Perennial grasses; spikes ter- 

 minal, looser and more slender than in Lli/tniis. 



Sj)eeies 4, of which 2 belong to North Anu'rica, 1 to Siberia, 

 and a fourth to Xew Zealand. 



1. A. Hystrix (L.) Micnch, .Afetli. 2!)4 (1794). Hottlk-mucsh 

 Grass. Asprella Jfi/.sfri.r Willd. Enuni. 132 (1S09). Elynius 

 Hystrix L. Sp. PI. 5G0 (I7r)3). (iytnnostivhnni /fys/ri.c Schreb. 

 lieschr. Griies. 2:127 (1810). (ryiiuiosf ichnmmaj us Uaynh. ^oin. 

 l:3;i. Hystrix jxttula Mwnch, Meth. 295 (1794); Ify.strix 

 Hystrix Millsp. Fl. W. Va. 474 (1S!»2). 



A rather smooth or sparingly scal)rous tufted grass, 60-120 cm. 

 high. Leaves 5-0 in number; sheaths shorter than the in t "modes ; 

 ligule a mere ring; blades flat, inverted, 15-20 cm. long, 8-15 

 mm. wide. S[>ike loose, rachis slender, 6-15 cm. long. S])ikeleta 

 1-3 at a joint, spreading, early deciduous; empty glumes sometimca 

 rei)resented by slender rudiments; floral glume smooth or rough, 9 

 mm. long, tipped with an awn 2-4 times its length ; i)ah'a as long 

 as its glume, obtuse. Glaucous plants were found by 0. F, 

 AVheeler in Ionia County, Michigan. 



Vermont, Pringk ; Pennsylvania, Scritmer ^or V. S. Dept» 



