GRAMINEiE. 
355 
palea fringed on the ribs w it It rigid setce. Styles terminal. 
— The unequal glumes alone distinguish this from Triticum. 
Tr. XI. HORDEINEyE. Spikelets solitary or 2 or 3 together, 
sessile on opposite sides of a channeled and toothed rachis. 
Otherwise like Tr. X. 
44. Triticum. Glumes opposite, nearly equal, many-flowered, 
embracing the flowers. Spikelets solitary. 
45. Lolium. Glume solitary, or the outer very minute, with 
3 or more flowers. Spikelets placed edgewise on the rachis, 
solitary. 
46. Elyhus. Glumes 2, both on the same side of the spike- 
let, without awns or seta, with 2 or more perfect flowers. 
Spikelets 2 or 3 together. 
47. Hordeum. Glumes 2, terminating in long seta?, with 1 
perfect Jiower and a stalklike rudiment next the common 
rachis. Spikelets in threes, often partially barren. 
Tr. XII. ROTTBOELLIINEjE. Spikelets of one perfect 
flower placed edgewise 011 the rachis. 
48. Nardus. Spikelets in 2 rows on one side of the rachis, 
of one flower. Glumes 0. Outer palea keeled, tapering into 
a subulate point. Stigmas elongate, filiform, protruded at 
the apex of the flower. 
49. Lepturus. Spikelets solitary, imbedded alternately on 
opposite sides of the rachis, of 1 flower and a superior 
rudiment. Glumes 1 — 2 opposite to the rachis, cartilagi- 
nous, covering the flower. Paleie scarious. Stigmas fea- 
thery. 
Tribe I. Panicecs. 
1. DlGITARIA Scop. 
[1. D. sanguinalis (Scop.) ; 1. and sheaths hairy, fl. oblong- 
lanceolate glabrous with downy margins (:). — E. B. 849. R- 
(Agrost.) 1407. — St. ascending, a foot long. — Not a true native, 
formerly found in Battersea fields near London. A. VIII.] E. 
2. D. humifusa (Pers.) ; 1. and sheaths glabrous, fl. elliptical 
downy with glabrous nerves. — E. B. S. 2613. — St. mostly pro- 
cumbent, 4 — 8 in. long. Spikes usually 3 or 4, springing from 
nearlv the same point. Spikelets in pairs, one on a longer stalk 
than the other.— Sandy fields, rare. A. VII. VIII. E. 
2. Echinochloa Pal. cle Beauv. 
*l.E. Crus-galli (Beauv.) ; spikes alternate or opposite, spike- 
