55 2 



GRAM1NE<E 



45. TRfncuM. — Spikelets solitary in the notches, with their 

 broad sides to the rachis, 3- or more-flowered. 



46. Lefitjrus. — Spikelets solitary in the notches, with their 

 broad sides to the rachis, 1 -flowered. 



47. NXrdus. — Spikelets solitary in the notches of a 1 -sided 

 spike, i-flawered. 



48. Hordeum. — Spikelets 3 in each notch, i-flowered, with 

 long awns. 



49. Elymus. — Spikelets 2 or 3 in each notch, 2 — 7-flowered, 

 awnless. 



1. Digitaria (Finger-grass.) — Spikelets i -flowered, arranged 2 

 together along one side of linear, digitate spikes, glumes 4, usually 

 not awned, the lowest small ; flowering glume 3-veined. (Name 

 from the Latin digitus, a finger, from the form of the inflorescence.) 



I.* D. sanguindlis (Fingered Panic). — An introduced weed of 

 cultivated ground ; stems 1 — 2 feet long, spreading at base, then 

 erect ; leaves flat, hairy, panicle of 2 — 6, rarely more, simple, 

 slender, digitate, spike-like branches, 2 — 4 in. long. — South of 

 England. — Fl. August. Annual. 



2. D. linearis (Red Millet, Finger-grass). — Very like the pre- 

 ceding, but much smaller and less hairy ; stems 6 — 8 in., prostrate ; 

 panicle of 2 — 5 branches ; spikelets minute, purplish, ovate, 

 stalked, in pairs. — Sandy fields in the south-eastern counties ; 

 rare. — Fl. July, August. Annual. 



*2. Echinochloa. — Spikelets 2-flowered, panicled, the lower 

 -flower staminate ; glumes 4 ; flowering glume 5-veined, pointed or 

 awned. (Name from the Greek echinos, a hedgehog, chlda, grass.) 



1.* E. Crus-gdlli (Loose, or Cockspur, Panic). — A coarse 

 naturalised weed ; stems 1 — 4 feet, ascending ; leaves broad, gla- 

 brous, rough-edged ; panicle 3 — 6 in. long, irregularly pyramidal, 

 with alternate or opposite, rather 1 -sided branches and downy, 3- 

 sided rachis ; spikelets green, on hairy pedicels ; third glume 

 pointed or awned ; flowering glume polished. — Fields in the south- 

 eastern counties. — Fl July. Annual. 



*3- Setaria (Bristle-grass). — Spikelets in a dense, cylindrici 

 spike-like panicle, resembling those of Pdnicum, but with stout 

 bristles on their pedicels and no awns. (Name from the Latin 

 seta, a bristle.) 



1.* S. viridis (Green Bristle-grass or Panic). — An erect plant, 

 1 — 2 feet high ; leaves flat, rough on the edges ; panicle green, 1 

 — 3 in. long, with downy, 3-edged, whorled branches ; bristles 

 purplish, £ in. long, with ascending teeth ; flowering glume smooth. 

 — A casual in cultivated fields. — Fl. July, August.* Annual. 



