Leersia 



Oryzeae 



145 



50 



Map 257 

 Hierochloe odorata (U Beauv. 



50 



Map 258 



Anthoxanthum odoratum L. 



50 



Map 259 



Phalaris arundinacea L. 



1. Phalaris arundinacea L. Reed Canary Grass. Map 259. This species 

 is infrequent in the lake area and local south of it. In most places in the 

 lake area it seems to be a native while southward it is doubtless an escape. 

 It is usually found in marshes but will thrive in almost any habitat. It 

 is recommended as a fodder plant for low grounds, especially in the north- 

 west. My observation and personal experience with it is that it is wise 

 not to plant it if one wishes ever to get rid of it. I have found it as difficult 

 to exterminate as most pernicious weeds. 



Nat. of Eurasia; N. B. to se. Alaska, southw. to N. C, Ky., Okla., N. Mex., 

 Ariz., and ne. Calif. 



la. Phalaris arundinacea var. picta L. This is a variety with the 

 leaves striped with white. It is often used in cultivation and found as an 

 escape in colonies along roadsides and in waste places. 



8. ORYZEAE Kunth Rice Tribe 

 112-194. LEERSIA Sw. 



Culms compressed; foliage more or less scabrous or scabrous-pubescent; spikelets 3-3.5 

 mm long (rarely one 4 mm long), 1-1.3 mm wide; stamens 1 or 2; grain about 2.5 



mm long, 1 mm wide 1. L. virginica. 



Culms terete; foliage more or less hispid; spikelets 4.1-5 mm long, 1.5-4 mm wide; 

 stamens 2 or 3; grain 3-3.5 mm long, 1.5-1.8 mm wide. 

 Spikelets oblong, 1.5-1.8 mm wide; stamens 3; grain about 3 mm long, 1.5 mm wide. 



2. L. oryzoides. 



Spikelets broadly oval to nearly orbicular, 3-4 mm wide; stamens 2; grain about 3.5 

 mm long, 1.8 mm wide 3. L. lenticularis. 



1. Leersia virginica Willd. (Homalocenchrus virginicus (Willd.) 

 Britt.) Whitegrass. Map 260. An infrequent to frequent grass in low 

 woodland of all kinds in all parts of the state. It is usually found where 

 the mineral soil is exposed, hence it is most frequent on old logging roads. 



Que. to S. Dak., southw. to Fla. and Tex. 



