OR AMINES. 
365 
— E. B. 1204. Par. 52.— Height nearly 2 feet. St. usually 
nearly round. L. usually short, narrow, acute. Branches of 
the panicle generally simple bearing only one spikelet. — ,3. lonyi- 
folia (Par.) ; L much longer. — y. dlpina ; St. often compressed 
and sheaths carinate, branches of the panicle often bearing se- 
veral spikelets, spikelet with more numerous fl., inner palea less 
acute, 1. broader. I believe that none of these characters are 
permanent. — E. B. 2141. Par. 53. — A. planiculmis of Hooker 
(£. B. S. 2684.) appears to me to belong to this species, differing 
in its greatly compressed st., strongly keeled sheaths and more 
branched panicle. — Dry pastures and mountainous places. P.VI. 
4. A. pubescens (L.) ; panicle erect nearly simple, fl. erect 
about 3-fl, scarcely longer than the glumes, lower /. and sheaths 
hairy.— E. B. 1640. R. 1700. Par. 53.— Height 1—2 feet.— 
Chalky and limestone districts. P. VII. 
27. Arrhexatherum Pal. de Beauv. 
1. A. avenaceum (Beauv.); 1. flat. — E. B. 813. -R. 1715 — 
1717. Par. 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., Par. 26. 
I find this plant preserving its characters on rich as well as bar- 
ren soil. — Hedges and pastures. P. VI. Oat-yrass. 
28. Holcus Linn. 
1. H. lanatus (L.) ; upper glume obtuse apiculate, awn smooth 
except for a short distance from the tip. — E. B. 1169. R. 1718. 
Par. 21. — Height 1—2 feet. Sheaths downy. Inflorescence 
panicled, often pinkish. Lower fl. awnless. 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 pastures. P. VII. 
2. H. mollis (L.) ; upper glume acute, awn rough throughout 
its whole length.— E. B. 1170. R. 1721. Par. 21, 22.— Height 
1 — 3 feet. Sheaths nearly smooth. Inflorescence not so com- 
pact as in the preceding, whitish. Lower fl. awnless. Awn at 
length bent at an angle, protruding beyond the glumes. Root 
creeping. Sometimes the lower 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. VII. 
29. Triodia R. Br. 
1. T. decumbens (Beauv.) ; panicle racemose, spikelets few 
oval, fl. about 4 scarcely extending bevond the glumes without 
awns.— E. B. 792. R. 1572. Par. 30.— St. 6—12 in. high. 
L. flat. Sheaths rather hairy. Ligule reduced to a tuft of hairs. 
