AUIUIENATHERUM. TRIODTA. 
387 
s))ikek'ts, spikelet with move numerous fl., inner j)alc less acute, 
1. broader. I believe that none of these characters are permanent. 
E. B. 21-11. P. 53. — A. phniiculmis of Hooker {E. B. S. 2(J84.) 
a])])cars to me to belong to this species, differing in its greatly 
comi)ressed st., strongly keeled sheaths and more branched pa- 
nicle. — Diy pastures and mountainous places. P. VI. 
4. A. pubescens (L.); panicle erect nearly simple, fl. erect 
2 or 3, scarcely longer than the glumes, lower 1. and sheaths 
hairy. — E. B. 1G40. R. 1700. P. 53. — Height 1 — 2 feet. — 
Chalky and limestone (hstricts. P. VII. 
28. Arrhenatherum Pal. de Beauv. 
1. A. avenacenm (Bea\iv.); 1. flat. — Holciis Sm., E. B. 813. 
P.1715 — 1717 . P.25. — Height 2 — 3 feet. Root fibrous. Joints 
of the st. glabrous sometimes downy.— /3. nodosum; base of the 
st. with swollen knobs, joints downy. A. bulbosum Lindl. P. 26. 
I find this plant preserving its characters on rich as well as bar- 
ren soil. — Hedges and pastures. P. VI. Oat-grass. 
29. Holcus Linn. 
1. H.lanatus{L.); upper glume obtuse apicnlate, awn smooth 
except for a short distance from the tip. — E. B. 1169. R. 1718. 
P. 21. — Height 1 — 2 feet. Sheaths dovray. Inflorescence pa- 
nicled, often pinkish. Lower fl. amiless. Awn at length curved 
like a fish-hook and included within the glumes, quite smooth 
or slightly rough at the point. Root fibrous. — Meadows and 
pastiu'es. P. VII. 
2. H. mollis (L.) ; upper glume acute, awn rough throughout 
its w’hole length. — E. B. 1170. R. 1721. P. 21, 22. — Height 
1 — 3 feet. Sheaths nearly smooth. Inflorescence not so com- 
pact as in the precechng, whitish. Lower fl. awnless. Ami at 
length bent at an angle, protruding beyond the glumes. Root 
creeping. Sometimes the low'er fl. has an awn, and rarely the 
upper is perfect. Occasionally the spikelets are much smaller 
and the plant only 12 — 18 in. high. — Thickets or open places on 
a light soil. P. Vll. 
30. Triodia R. Br. 
1. T. decumbens (Beauv.); panicle racemose, spikelets few 
oval, fl. about 4 scarcely extenchng beyond the glumes without 
awms. — E. B. 792 . R. 1572. P.30. — St. 6 — 12 in. high. L. flat. 
Sheaths rather hairy. Ligule reduced to a tuft of hairs. Spikelets 
few, 1 — 7- Glumes smooth, coriaceous, hiding the fl. Outer 
pale terminating in 3 points, 5-ribbed, hairy at the base. — Moun- 
tain pastures. P. VH. 
