GRAMINA. 
171 
Var. y is remarkable for the awns ultimately twisting outwards, a 
character which has remained constant under cultivation through 
several years. I have raised it from seed collected at the Lizard, 
Cornwall, by Mr. C. Bailey, in July 1866, for five years. 
Distinguished from B. eu-raceniosus by its more pubescent sheaths, 
by its more dense panicle, by its florets being more closely imbricated, 
and by the lower pale being strongly angled on each side beyond the 
middle. 
From B. commutatus it is separable by its erect and denser 
panicle, by its less acute spikelets, by its more closely imbricated 
florets, and by the margins of the lower pale having a more pro- 
minent angle. The spikelets are of a greyer green and the pales 
have broader pale scarious margins, so that their colour is less uni- 
form than that of B. eu-racemosus and B. commutatus. 
From B. secalinus it may be known by the florets not being 
separated in fruit, and by the leaf sheaths being densely pubescent. 
Soft Brome- Grass. 
German, Weichhaarige Trespe. 
SPECIES X.-BROMUS ARVENSIS. 
Plate MDCCCTI. 
Beich, Ic. n. Germ, et Hclv. Vol. I. Tab. CXLHI. Fig. 343. 
Serrafalcua arvensis, Varl. Fl. Ital. Vol. I. p. 323. Bab. Man. Erit. Bot. ed. vi. p. 423. 
Gren. & QiKh: Fl. de Fr. Vol. 111. p. 588. 
Annual or biennial. Stem erect or ascending, very slender, quite 
glabrous; knots subglabroiis. Leaves pubescent, green; sheaths 
split at the apex only, densely pubescent with short refiexed hairs. 
Panicle erect in flower and fruit, much branched or rarely only 
slightly branched, very lax, widely open in flower, and slightly so in 
fruit. Rachis with very distant nodes. Panicle branches 1 to 7 at the 
lower nodes of the rachis, unequal, very rarely all reduced to pe<licels, 
the longer ones commonly branched and bearing from 2 to 12 spike- 
lets, unbranched and bare of spikelets fur half or two-thirds of their 
length, usually about the length of three internodes of the rachis, the 
shorter of the lower ones and all those of the upper part of the panicle, 
or rarely all of them, reduced to pedicels, finely scabrous. Pedicels., 
except a ft-w of the lateral ones, longer than tbuir s[)ikelers. Spikelet> 
slightly drooping in flower, erect in fruit, at first linear-subcylin- 
drical and acute, ultimatelv linear-oblong and siibol^tuse, 6- to 12- 
flowered, green, almost always variegated with purple and white. 
Glumes unequal, the inner or larger one extending half way to the 
apex of the third floret. Florets loosely imbricated in flower and 
