58 ENGLISH BOTANY. 
GENUS UI—RUPPIA. Linn. 
Flowers usually 2 together, perfect, on a short filiform axils 
spadix issuing from the sheathing bases of the leaves. Perianth non 
Stamens 2; filaments scale-like; anthers 2-celled, affixed by th 
middle of the back, the cells considerably separated, parallel. Ova 
free, of 4 separate 1-celled and 1-ovuled carpels; stigma sessih 
Fruit of four longly-stalked obliquely ovate-conical subdrupace 
achenes elevated upon a common peduncle. 
A slender herb growing in brackish water, with narrowly linear 
lated sheathing bases. 
This genus of plants was named in honour of the German physician, 
Ruppius, author of “ Flora Jenensis,” in 1726. 
SPECIES l1—RUPPIA MARITIMA. Linn. 
Pirates MCCCCXXVII. MCCCCXXVIII. 
The only known species. 
Svus-Srecies (?) l—Ruppia spiralis. Hartman. 
Pirate MCCCCXXVII. 
Reich. Ic. Fl. Germ. et Helv. Vol. VII. Tab. XVII. Fig. 26. 
Hartman, Handbk. Scand. Fl. ed. ix. p. 215. Linn. Herb. 
R. maritima, Auct. Plur. 
R. maritima, var. a, Hook. & Arn. Brit. Fl. ed. viii. p. 485. 
Leaves narrowly linear, with slightly inflated sheaths. Peduneles 
elongated at the time of flowering, and raising the spike conspicuousl} 
above the water, at length very much longer than the pedicels of the 
nuts, and irregularly spirally coiled. Anthers oblong, 1} times as lon 
as broad. Nuts oval-ovate, slightly oblique, abruptly acuminated inte 
a short subcentral beak. 
In brackish ditches and pools. Not unfrequent on the south coast 
of England. I have seen specimens from Somerset, Sussex, and have 
collected it at Walton-on-the-Naze, Essex. Mr. Baker tells me 
the only form of Ruppia found at Coatham, in Yorkshire. The author: 
of the “Cybele Hibernica” state that they have seen but a single 
specimen, which is preserved in the herbarium of the late Dr. Mackay 
and labelled near Dublin, &c. It does not appear to occur in Scotlar 
England, Ircland (?). Perennial. Late Summer, Autumn. 
