574 ORDER CXLDT. — GRAMINACE2E. 



Genus VI— PHLE'UM. L. Herds-grass. 

 (An ancient Greek name.) 



Glumes 2, equal, mucronate, longer than the palese. PalecB 

 2, included in the glume, truncate, boat-shaped, without awns. 

 Flowers in dense, cylindrical spikes. 



1. P. praten'se, (L.) Stem erect, glabrous, simple. Leaves flat, lin- 

 ear-lanceolate ; sheaths longer than the joints. Glumes equal, hairy, 

 ciliate. Palece smaller than the glumes. — V,. June — July. Intro- 

 duced into the Southern States. 2 — 3 feet. Herds-grass. 



Genus VII.— PHALA'RIS. L. {Canary-grass) 

 (From phalos, shining, alluding to the grain.) 



Glumes 2, nearly equal, membranaceous, keeled, 1 -flowered. 

 Palece 2, coriaceous, pubescent at the base, shorter than the 

 glumes. Scales 2, opposite, ovate, lanceolate. Flowers in 

 compound spikes. 



1. P. arundina'ce^e, (L.) Panicle clustered, spreading when old. 

 Glumes obtusely keeled, with pointed tips ; rudimentary flowers hairy, 

 much shorter than the fertile ones. — Wet places. July. 2 — 1 feet. 



The ribbon-grass of the gardens is a variety of this species. 



2. P. America'na, (Ell.) Stem erect, branching, scabrous near the 

 summit, geniculate near the base. Leaves glabrous ; sheath shorter 

 than the joints. Style 1, bifid. — 2£. July — Aug. Swamps. 2 — 5 ft. 



Calamagrostis Americana. American Canary-grass. 



Genus VIII— ANTHOXAN'THUM. L. {Vernal-grass.) 

 (From anthos, flower, and antkon, of flowers: flower of flowers.) 



Glumes 2 — 3-flowered ; lateral florets imperfect, with one 

 paleae bearded ; intermediate florets perfect, shorter than the 

 lateral ones. Palece obtuse. Stamens 2. Styles 2. Panicle 

 contracted. 



1. A. odora'tum, (L.) Stem erect, scabrous at the summit. Leaves 

 linear, hairy ; sheath striate, pubescent at the throat. Flowers in ap- 

 pressed panicles. Glumes acute, membranaceous, hairy, the interior 

 one twice as long as the other. Paleoz equal, villous, with an awn at 

 the base of each. Styles 2, filiform. — If. May — June. Common in 

 the low country. Introduced. 12 — 15 inches. 



Sweet-scented Vernal-grass. 



Tribe III.— PANI'CE^E. 

 Spikclets 2-flowered ; inferior flowers incomplete. 



Genus IX.— PAS'PALUM. L. 

 (The Greek name for Millet) 



Glumes 2, 1 -flowered, membranaceous, equal. Palece 2, 



