56 ENGLISH BOTANY. 
GENUS IT1—ZANNICHELLIA. Linn. 
Flowers solitary or in pairs, monecious or polygamous, sessile or 
subsessile, axillary, issuing from a sheathing bract. Male flowers 
destitute of a perianth: stamen 1; filament filiform; anther 2- or 4 
celled. Female or perfect flowers with a membranous campanulate 
perianth surrounding the base of the ovary; stamen 1 or non 
ovary free, of 4 (rarely 2, 3, 5, or 6) separate 1-celled and 1-ovul 
carpels; style short; stigma peltate. Fruit of 4 (rarely 2, 3, 5, or 
subdrupaceous elongated incurved achenes. 
A slender herb, growing in fresh or brackish water, with narrowly- 
linear or linear-filiform alternate parallel-veined submerged translu- 
cent leaves, and membranous amplexicaul stipules. / 
; 
The name of this genus of plants was given to it in honour of Zannichelli, an, 
Italian botanist and naturalist, who published a history of plants, and flourished 
about 1702. ; 
SPECIES lI—-ZANNICHELLIA PALUSTRIS. Jin. — 
Prates MCCCCXXV. MCCCCXXVI. a 
J 
The only known species. : 
Svun-Srrcirs (?) L—Zannichellia eu-palustris. 
Prats MCCCCXXYV. 
Reich. Ic. Fl). Germ. et Hely. Vol. VII. Tab. XVI. Fig. 24. 
Billot, F\. Gall. et Germ. Exsice. No. 1068. 
Z. palustris, Fries, Mant. i. p. 16. Koch, Syn. Fl. Germ. et Helv. ed. ii. p. 782. 
Z. palustris, var. a, Bab, Man. Brit. Bot. ed. vi. p. 367. Hook. & Arn. Brit. Fle 
viii. p. 485. 
Z. major, CO. J. Hartm. Skand. FI. ed. ix. p. 216. 
Nuts subsessile, spreading, smooth or bluntly crenulated bu 
scarcely winged on the back; beak half as long as the rest of the frui 
In ditches, pools, and lakes. Common in England. Rather ra 
but widely distributed in Scotland, extending to Orkney. WN 
unfrequent throughout Ireland. ; 
: 
England, Scotland, Ireland. Perennial. Summer, Autumn. 
, 
Stems very slender, filiform, branched, rooting, at least at the lowe 
nodes. Leaves 1 to 3 inches long, all submerged, alternate or op 
site, narrowly linear or capillary. Stipules large, scarious, free 
the leaves, soon disappearing. Flowers very minute, submerge 
axillary, subsessile, enveloped in the stipules, which perform the offic) 
