TRIANDRIA. DIGYNIA. Hoedeum. 
203 
the upper part, terminating in a long, straight awn. Styles distant, ex¬ 
tremely short. Seed lanceolate, with a furrow along the upper side, 
and a downy point, firmly coated with both valves of the blossom. 
Sm. E.) 
Wood Lyme Grass. Hordeum sylvaticum. Huds. Woods in chalky soil. 
Rocks opposite Matlock Bath; Ripton Woods, Huntingdonshire. Near 
Berkhamstead, Herts. In the north, frequent. Mr. Woodward. 
P. June. 
HOR'DEUM. # [Cal. of two parallel valves, aggregate, ter- 
nate, with one floret. Central flower only perfect. Sm. 
E.) 
Obs. The curious, but complicated structure of the plants of this genus 
has prevented many young Botanists from satisfactorily ascertaining 
the species, though there is no great difficulty in the task. We have 
only three species in this island, all of which have 
1st. Two barren and one perfect floret in each set. 
2d. All the awns, whether belonging to the involucrum, or to the larger 
valve of the blossom, barbed. 
3d, Smaller and inner valve of the blossom awnless. 
4<th. Involucrum, or fence, two leafits, or awn-like substances, to each floret, 
and a third to the perfect floret, placed at the base and on the out¬ 
side of the inner valve of the blossom, and about the length of the 
valve. 
The British species may be readily discriminated thus:—■ 
H. muri'num. Some of the fence-leaves (involucrum, or calyx-valves, E.) 
fringed at the base. 
H. pratedse. Fence-leaves bristle-shaped, neither fringed nor expanded at 
the base. 
II. marit'imum. Some of the fence-leaves expanded and spear-shaped at 
the base. 
H. muri'num, Lateral florets barren, awned, smooth on the keel; in- 
volucrurn of the intermediate florets fringed. 
Curt. 325—FI. Ban. 629—(E. Bot. 197*1. E .)—Lob. Obs. IS—Park. 1157— 
H. Ox. viii. 6. 4. Gr. Secalin — Ger. 66. 2 —C, B. 134— Ger. Em. 73, upper 
figure — Barr. 111. 1— Mont. 90, the middlefioret. 
(Stems a foot high, decumbent at the base, then erect, very leafy. Leaves 
spreading, acute, rough. Spike two or three inches long, inclined. 
Spikets distichous, imbricated. Grev. E.) Involucrum half the length of 
the florets. Florets two barren and one fertile, forming a set; the larger 
valve in all the florets awned. Each barren floret has two fence-leaves ; 
one of which is fringed at the base. The fertile, or perfect floret, has two 
fence-leaves on the outside the larger awned valve of the blossom, both 
of which are fringed at the base. This fertile floret has also a third 
fence-leaf, resembling an awn, placed at the base of the inner valve of the 
blossom, and not fringed. 
* (From horreo , to set up as bristles or hair through anger or fear ; in allusion to the 
ears of barley being conspicuously awned. E.) 
