596 POACE^. 



long, 3-nerved; floral glume 4 mm. long, the awn 1 5 mm. long. 

 Authei's 1.5 mm. long. 



Michigan (Benzie, Bay, Crawford, and Macomb counties), 

 probably indigenous; also in Europe. 



A pretty careful examination of many jjlauts has been made, 

 all compared with Hackel's description. 



Subsp. sulcata Hack. Monog. Fest. Eu. 100 (]88'2). F. sulcata 

 Hack. Bot. Centralb. 8:405 (1881). 



Culms 70 cm. high, with two nodes, leaf-blades 5-7-nerved, 

 capillary, 0.5-0.6 mm. diam. Panicle 5-10 cm. long. Spikelets 

 8-10 mm. long, 5-flowered. 



Montana, Canby cC Scribmr 407. 



Var. MAKGiiirATA Hack. 1. c. 



Densely tufted ; culms slender. 30-40 cm. high, with 2 nodes, the 

 upper one one-fifth to one-third the height of the culm, angled be- 

 low the panicle. Sterile shoots numerous, the leaves half as long 

 as the culm, the blade obtuse, conduplicate, 3-ribbed, the 

 sclerenchyma in three bands (at the keel and the margins only), 

 0.6-0.8 mm. diam., rigid, glaucescent; ligule obsolete, ciliate, 

 blades of the culm 3-6 cm. long. Panicle 3-8 cm. long, ovate, 

 spreading when in flower, rachis and rays scabrous. Spikelets ob- 

 long-lanceolate, 6-10 mm. long, 5-8-flowered; empty glumes 

 sliglitly unequal, first oblong, second linear-oblong, subulate, ex- 

 tending two-thirds of the way over the floral glume next above; 

 floral glume linear-lanceolate; 4.5-5 mm. long, glabrous, smootli, 

 mucronate or aristate; palea linear-oblong, with 2 short teeth, 

 scabrous on the keels. Anthers 2.2 mm. long. 



Michigan, Beal 135; Colorado, Clarl 4068. 



In cultivation on the lawns. Agricultural College, Michigan, 

 and elsewhere, often mistaken for var. duriuscula. 



Subspecies Borderii Hack. Monog. Fest. Eu. 113 (1882). F. 

 Borderii Il-dck. Bot. Centralb. 8:406 (1881). 



Culms firm, smooth, 10-20 (in this case 40) cm. high, with 

 one node, and another among the lower leaves. Blades of sterile 

 shoots 0.7-0.8 mm. diam., rigid, glabrous, compressed, the 

 sclerenchyma in 9 bauds. Slieaths smooth, entire almost to the 



