40 CLASS III. ORDER III. 



The leaves appear somewhat less soft and the bristle shorter 

 than in the European. — Fields. — June, July. 



Bromus ciliatus. L. Ciliated Brome grass. 



Panicle nodding, spikelets oblotig, terete, eight or 

 ten flowered ; glumes acute ciliate ; corolla hairy and 

 ciliate ; bristles short. 



Spikelets rather large and strongly fringed with hairs. — With 

 the foregoing there are intermediate species or varieties difficult 

 to separate. 



46. ARUNDO. 



Arundo Canadensis. Mx. Canada reed. 



Panicle oblong-lax; glumes rough, pubescent, as 

 long as the corolla ; corolla awned on the back ; hairs 

 as long as the valves ; culm and leaves smooth, slen- 

 der. 

 Syn, Arundo Cinnoides. Muhl. 



Calamagrostis Mexicana. Nutt. 



Found in low grounds, two or three feet high, with the habit 

 of Cinna arundinacea. — August. — Perennial. 



Arundo coarctata. Tor. Glaucous reed. 



Panicle somewhat spiked, conglomerate; calyx a 

 little longer than the corolla, carinate ; corolla longer 

 than the hairs, awned a little below the tip. 

 Syn. Arundo glauca. Mukl. 



Four or five feet high, very slender, with a somewhat glaucous 

 hue. — In wet grounds. — August. — Perennial. 



§ Subgenus Psamma. Nectaries linear-lanceolate, longer than 

 the seed ; stigmas three. 



Arundo arenaria. L. Beach reed, Beach grass. 



Panicle spiked ; calyx acute ; hairs a third as long 

 as the corolla ; leaves involute. 

 Syn. Psamma arenaria. Beauv. 



