564 
CV1I. GRAMINE-®. 
[Arena. 
ff Outer glumella usually 9-nerved. 
[11. B. *pditulus Koch ( spreading B.)\ panicle spreading 
loose drooping in fruit, lower peduncles much elongate simple 
or branched, simple peduncles scarcely longer than the linear- 
lanceolate compressed spikelets, florets imbricate in fruit, 
outer glumella longer than the inner one rather shorter than 
the nearly straight awn with usually 9 (sometimes 7) ribs the 
two lateral ones on each side prominent. Pam. Gr. t. 127. 
Serrafalcus Pari. 
Near Hebden Bridge, Yorkshire : Mr. Gibson. ©. 6. — Intro- 
duced and not even naturalized. Inner glumella only reaching to the 
base of the awn. Awns slightly spreading when dry. Apex of the 
larger glume reaching midway from its base to the summit of the 
second floret on the same side. Anthers twice as long as broad. 
This seems too closely allied to the last.] 
[T2. B. * squarrdsus L. ( Corn B.)-, panicle drooping, pedun- 
cles simple lower ones about as long as the oblong or ovato- 
lanceolate subcompressed spikelets, florets imbricate in fruit 
nearly glabrous, glumellas about as long as the ultimately divari- 
cating awns with 3 prominent ribs on each side, leaves pubes- 
cent. E. B. t. 1885 : Pam. Gr. t. 128. Serrafalcus Pari. 
Corn-fields ; Somerset, Essex, Kent, and Surrey. 0. 6, 7 
This species is remarkable for its spreading awns : it is however 
certainly an introduced plant. Inner glumella shorter than the outer, 
and reaching only to the base of the awn. Apex of the larger glume 
reaching half-way from its base to the summit of the second floret on 
the same side. Anthers twice as long as broad.] 
33. A vena Linn. Oat. Oat-grass. (Tab. VIII. f. 30.) 
Panicle lax. Spikelets laterally compressed, with 2 or more 
perfect florets and sometimes 1 or more rudimentary neuter 
ones. Glumes 2, membranous, upper one 3- or many-nerved. 
Glumellas 2, lanceolate, hairy at the base, herbaceous, ulti- 
mately cartilaginous and firmly inclosing the caryopsis ; outer 
one with a long twisted geniculate dorsal awn, with two points 
or bristles at the summit. — Name of doubtful origin, which we 
cannot trace to any language older than the Latin ; perhaps, 
therefore, from feenum, hay. 
* Smaller glume 5 — 7 -nerved, larger one 5 — 1 1 .nerved. Outer glumella 
6 — 8-tierved. Spikelets ultimately drooping. Ovary hairy at the 
apex. Caryopsis with a longitudinal furrow on one side. Annual 
plants. 
1. A. fdtua L. (wild O., or Haver); panicle erect, spikelets 
drooping of about 3 scabrous long-awned florets smaller than 
the glumes with long fulvous hairs at the base, outer glumella 
bifid at the summit. E. B. t. 2221 : Pam. Gr. t. 27. 
