THE GRASS TRIBE 329 



flattened as is usual in that genus and not so closely sessile ; outer 

 glumes opposite, unequal, their edges towards the rachis. (Name 

 from the Greek brachus, short, and podion, a footstalk.) 



42. Agropyron (Couch-Grass). Spikelets several-flowered, 

 dosely sessile, 1 in each notch of a simple spike ; outer glumes 

 opposite, nearly equal, their edges towards the rachis. (Name 

 from the Greek agros, a field, and puron, wheat. Some writers 

 place this genus with Trilicum, which includes the cultivated 

 wheats.) 



43. Elymus (Lyme-Grass). Spikelets 2-4 flowered, awnless 

 sessile in pairs in the notches of a simple spike ; outer glumes both 

 on the same side of the spikelet. (Name said to be from Elyma, a 

 town in Macedonia, or from the Greek cluo, to roll up, the fruit 

 being rolled up in the pale.) 



44. Hordeum (Barley). Spikelets 3 together in alternate 

 notches of a simple spike, 1 or 2 of them consisting each of 2 glumes, 

 either empty or with male or rudimentary flowers, the others con- 

 taining 1 perfect flower ; empty glumes often reduced to mere 

 awns, which form a kind of involucre round the flowering glume. 

 {Hordeum is the old Latin name.) 



45. Lepturus (Sea Hard Grass). Spikelets i-flowered, awnless, 

 inserted singly in notches on alternate sides of a simple, jointed 

 spike ; outer glumes 2, hard, ribbed, both on the same side of the 

 spikelet. (Name from the Greek leptos, slender, and oura, a tail.) 



46. Lolium (Rye-Grass). Spikelets several-flowered, closely 

 sessile in each notch of a simple spike, the edge of the spikelet, 

 not the side as in Agropyron, being turned towards the rachis ; 

 outer glumes 1 or 2 ; if 2, that next the rachis is very small. {Lolium 

 is the old Latin name.) 



I. Panicum {Panic) 



1. P. sanguinale (Fingered Panic). Stems 1-2 feet high ; leaves 

 flat, hairy ; panicle of 2-6 (rarely more) slender branches 2-4 inches 

 long, arising together at the top of the stem ; spikelets 2 together, 

 along 1 side of the branches, each about A inch long. A weed 

 occasionally met with on cultivated ground ; not native. Fl. 

 August. Annual. 



2. P. lineare (Red Millet or Glabrous Finger-Grass). Much 

 smaller than the preceding, and the panicle has only 2 or 3 spike- 

 like branches scarcely more than 1 inch long. Sandy places and 

 cultivated ground ; rare. Fl. July, August. Annual. 



3. P. Crus-galli (Loose or Cockspur- Panic). A robust, broad- 

 leaved species with an irregularly pyramidal panicle 4-6 inches 

 long ; spikelets crowded along the spike-like branches, larger than 



