48 
ENGLISH BOTANY. 
thirds of the length of the pale beyond its apex. Upper pale about 
three-fourths the length of the lower one. 
Var. a, genuina. 
Plate MDCCXIX. 
Billot, n. GaU. et Germ. Exsicc. No. 1361. 
A. alba, 8m. Engl. Bot. No. 1189. 
Stem rooting only at the base. Panicle lax, branches mostly bare 
of florets at the base. 
Var. 0, stolonifera. Sm. 
Plate MDCCXX. 
Billot, El. GaU. et Germ. Exsicc. No. 3938. 
A. stolonifera, Sm. Eng. Bot. ed. i. No. 1532. Linn. (?) ex parte. 
A. alba, var. ft, subrepens, Bah. Man. Brit. Bot. ed. vi. p. 407. 
Stem rooting extensively at the lower joints. Panicle dense, some- 
what spikelike and lobed before and after flowering, with the branches 
much more numerous at each node of the rachis than in var. a, and 
most of the shorter ones furnished with spikelets down to the base. 
In marshes, meadows, damp woods, and pastures, and frequently 
floating in shallow water. Very common, and generally distributed. 
Var. 0, on sands and clayey banks, chiefly by the sea and tidal rivers 
from Devon and the Isle of Wight north to Liverpool, and perhaps 
Orkney. 
England, Scotland, Ireland. Perennial. Summer, Autumn. 
A very variable plant, scarcely tufted, and with elongate barren 
shoots which somerinies, when floating in water, attain a great length 
and bear a considerable resemblance to those of Alopecurus fulvus 
nnd A. geniculatus. Flowering stems I to 3 feet high. Leaves 
all similar, the longe>t ones 3 inches to 1 foot long by J- to I inch 
broad. Panicle :> "to 0 inches long, usually very lax. but in var. f6 
dt-nse. Spikelets to J inch long. Glumes" usually green, but 
sometimes brownish-purple. Rarely the panicle is vivi[)arous. 
I have not myself met with the awned form of A. alba, but even 
in this state it may be known from A. canina by having the upper 
ptalo developed, 
M,r,<h Bait (;ra.^^. 
