6 
MONANBRIA. MONOGYNIA'. Hippuris. 
HIPPU'RIS.* * Cal, none. Summit simple. Seed one, (infe¬ 
rior. E.) 
H. vulgaris. Leaves awl-shaped, eight in a whorl. 
Dicks. H. S. — Curt. 287— [E. Bot. 763. E .)—Giseke 32— FI. Dan. 87— Dod. 
113. 2— Lob. Ic. i. 792. 2— J. B. iii. 732— Ger. 957. 6. misprinted 953— 
a B. Th. 243. 4 —Park, 1200. 4. 
Leaves narrow: growing in whorls round the joints, twelve or more at each 
joint. Flowers equal in number to the leaves. Stem straight, jointed. 
The Jlower of this plant is found at the base of each leaf, and is as simple 
as can be conceived, there being neither calyx nor blossom; and only one 
stamen, one pistil, and one seed. Linn. ( Stem twelve to eighteen inches 
above the water, reddish. Lower leaves under water pellucid, long, and 
pale; in winter bearing no other. Sm. A section of a transverse slice of 
the stem exhibits the air-cells, on the out-side of a central column, sepa¬ 
rated from each other by smaller cells, filled with aqueous fluid. Mr. 
Thomson remarks that all aquatic plants contain very large air-cells; 
which are most abundant in their stems, if their leaves be few or com¬ 
paratively small, or the greater number is above the surface of the water ; 
and in the leaves, if these be large or immersed. E.) 
Common Mare’s-tail. PADDowriPE.t (Welsh: Rhawn y gaseg cyffredin. 
E.) Muddy ponds and ditches. Lochend and Duddeston Loch, near 
Edinburgh. Mr. Brown. Lake in Tortworth Park, Gloucestershire. 
Mr. Baker. Almost every where in muddy ditches in the N. W. of Lan¬ 
cashire, Mr. Hall. About a mile from Stafford, in ditches adjoining the 
foot-road to Aston. (At Bootle, and in ditches about Form by, near 
Liverpool. Dr. Bostock. About Bungay, very common. Mr. Woodward. 
Ditches adjoining Rhyd Marsh, near Prestatyn, Flintshire. Near the 
bridge entering Brockhall lawn from Norton, Northamptonshire. Mr. 
Griffith. Muddy ditches, Anglesey. Welsh Bot. In the Sheen, near the 
bridge at Darlington. Winch Guide. In Old Eden, parish of Aldingham; 
and at Low Gelt Bridge, Brampton, Cumberland. Hutchinson. E.) 
P. May .J 
BXGYNIA. 
CALLIT'RICHE.^ Cal. none. Petals two. Seeds four; naked; 
with a membranous border on one side: (flowers some¬ 
times monoecious. E.) 
C. ver'na. Upper leaves oval; not notched at the end. 
{Hook. FI. Loud. 127. E.)— E. Bot. 722. 
The first authorities still differ in opinion respecting their specific distinctions. In Eng. 
FI. they are divided into S. herbacea, procunibens, radicans, fruticosa , the learned 
author admitting that the two latter may prove to be only one species. Professor Hooker 
comprises S. procumbens, E. Bot. 2475 , and annua, 415 , in herbacea ; S. radicans, 
E. Bot. 1691 , in fruticosa , 2467- E.) 
* (l7r7ros, a horse, and o vptx, a tail, from a fancied resemblance in its mode of growth. E.) 
f (From Paddock or Puddock a frog, in Scotch, and sometimes in old English, 
(Shaksp. passim ,) as growing in the resort of those reptiles. E.) 
$ It is a weak astringent. Goats eat it, but cows, sheep, horses, and swine refu.se it. 
beautiful, and hair. E.) 
