30 



POACEAE. 



hyaline, 2-keeled, 2-toothed. Stamens 3. Styles very short. Stigmas plumose. 

 [In honor of Georg Ludwig Koeler, German botanist.] Some 15 species widely 

 distributed. Type species: Poa nitida Lam. 



1. Koeleria phleoides (Vill.) Pers. TIMOTHY 

 KOELERIA. (Fig. 43.) Annual; culms slender, gla- 

 brous, 3'-18' high. Leaves narrowly linear, acumi- 

 nate, 2'-5' long, r'-ls" wide, more or less pilose; 

 spike-like panicle narrowly cylindric, l'-3' long, 3"-5" 

 thick; spikelets very numerous, 4-5-flowered, long- 

 villous, the flowering scales short-awned. [Festuca 

 phleoides Vill.] 



In fields and waste grounds. 

 Europe. Flowers in spring. 



Naturalized from 



19. EEAGROSTIS Beauv. 



Annual or perennial grasses, rarely dioecious, 

 from a few inches to several feet in height, the spike- 

 lets in contracted or open panicles. Spikelets 2- 

 many-flowered, more or less flattened. Two lower 

 scales empty, unequal, shorter than the flowering ones, 

 keeled, 1-nerved, or the second 3-nerved ; flowering 

 scales membranous, keeled, 3-nerved; palets shorter 

 than the scales, prominently 2-nerved or 2-keeled, usually persisting on the 

 rachilla after the fruiting scale has fallen. Stamens 2 or 3. Styles distinct, 

 short. Stigmas plumose. Grain free, loosely enclosed in the scale and palet. 

 [Greek etymology doubtful, perhaps signifying a low grass, or Love-grass, an 

 occasional English name.] A genus of about 120 species, widely distributed 

 throughout all warm and temperate countries. Type species: Briza Era- 

 grostis L. 



Palets glabrous ; panicle open. 



1. E. megastachya. 

 Palets long-ciliate ; panicle dense. 



2. E. cttiaris. 



1. Eragrostis megastachya (Koel.) 

 Link. STRONG-SCENTED ERAGROSTIS. 

 (Fig. 44.) Annual; culms 6-2 tall, 

 erect, or decumbent at the base, usually 

 branched. Sheaths sparingly pilose at 

 the throat; leaves 2'-7' long, l"-3" wide, 

 flat, smooth beneath, scabrous above; 

 panicle 2'-6' in length, the branches 

 spreading or ascending, l'-2' long; 

 spikelets 8-35-flowered, 3"-8" long, 

 about li" wide, very flat; empty scales 

 acute, the first slightly shorter than the 

 second ; flowering scales obtuse, about 1" 

 long, the lateral nerves prominent. [Poa 

 magastachya Koel.; E. major Host.] 



A weed in cultivated ground, Warwick Pond, 1905 ; roadside Paget 

 troduced. Native of Europe. Widely naturalized in temperate North 

 Flowers m summer and autumn. 



1913. In- 

 America. 



