( 442 .) 
ISNA'RDI A.* *. 
Linnean Class and Order. Tetra'ndria f, Monogy'nia. 
Natural Order. Onagra'ria?, Juss . — Lindl. Syn. p. 107.; 
In trod, to Nat. Syst. of Bot. p. 56. — Rich, by Macgilliv. p. 522. — 
Loud. Hort. Brit. p. 510. — Don’s Gen. Syst. of Gard. and Bot. v. ii. 
p. 675. — Mack. FI. Hibern. p. 109. — Hook. Brit. FI. (4th edit.) 
p. 405. — Salicaria:, Juss. Gen. PI. p. 333 — Sm. Gram, of Bot. 
p. 170. — Rosales; subord. Myrtosa:; sect. Onagrin/e; type, 
Onagrace/e; Burn.Outl. of Bot. v.ii. pp. 614,617, 722, & 728. — 
Calycanthema:, Linn. 
Gen. Char. Calyx (see fig. 1.) superior, in 4 deep, equal, egg- 
shaped, broad, spreading, permanent segments. Corolla of 4 petals, 
or wanting. Filaments (see figs. 1 & 2.) 4, awl-shaped, shorter than 
the calyx, and in front of its segments. JInthers oblong. Germen 
(fig. 3.) inferior, oblong, 4-cornered. Style cylindrical, shorter than 
the calyx. Sf/aTRa capitate. Capsule (fig. 4.) inversely egg-shaped 
or nearly cylindrical, 4-cornered, membranous, crowned with the 
calyx, of 4 cells, and 4 valves, opening at the cells. Seeds numer- 
ous, oblong, attached to the central column. 
The superior, 4-cleft calyx ; the corolla of 4 petals, or wanting ; 
the capitate stigma ; and the inversely egg-shaped, 4-cornered, 
4-valved, 4-celled, many-seeded capsule, crowned with the calyx ; 
will distinguish this from other genera in the same class and order. 
One species British. 
ISNA'RDIA PALU'STRIS. Marsh Isnardia. 
Spec. Char. Stems procumbent, rooting, smooth. Leaves 
opposite, egg-shaped, acute, stalked. Flowers axillary, solitary, 
sessile, without petals. 
Engl. Bot. Suppl. t. 2593.— Linn. Sp. PI. p. 175.— Willd. Sp. PI. v. i. pt. I, 
p. 080.— Ait. Hort. Kew. (2nd ed.) v. i. p. 206. — D. C. Prod. v. iii. p. Gl. — Sm. 
Engl. PI. v. iv. p. 264. — With. (7th ed. ) v. ii. p. 242. — Lindl. Syn. p. 109. — Ilook. 
Brit. FI. p. 70. — Don’s Gen. Syst. of Gard. and Bot. v. ii. p. 697. — Macr. Man. 
Brit. Bot. p. 79. — Irv. Loud. FI. p. 199. — Bal). Prim. FI. Sam. p. 35. — Dantia 
palustris, Pet. Th. Gen. f. 99. — Alsine palustris, sen paludosa , rotundifolia 
repens, foliis portulacce pinguibus hints ex advarso nacentibus, Jlosculis 
virescentibus rosaceis, Lind. Tournef. Alsat. p. 115. t. 2. b. — Glaux major 
palustris,. /lore fterbaceo, Bocc. Mus. p. 105. t. 84. f. 2. — Moris. Hort. Blacs. 82, 
2G8. — Ray’s Hist. v. ii. p. 1102 ; v. iii. p. 635, 
Localities. — In ponds and watery places ; very rare. — Hampshire ; Abundant 
in a bog on Peters tied Heath ; recently discovered there by Miss Rickman, and 
.1. Barton, Esq. — Sussex ; In an old gravel-pit, near Buxstead : 1827 ; W. Borrer, 
Esq. — Island of Jersey ; St. Peter’s Marsh -. Messrs. Haslam and W. Christy, 
1837. 
Fig. 1. A Flower. — Fig. 2. A separate Stamen. — Fig. 3. Germen. — Fig. 4. Cap- 
sule. — Fig. 5. Transverse section of Capsule. — Fig. 6. Seed. — Figs. 1 to 5, more 
or less magnified. 
* So named by Linnikcs, in memory of M. Antoine Dante Isnaud, a Botanist 
and Professor at Paris, and a Member of the Academy of Sciences ; he published 
descriptions of some plants in their Memoirs for 1716, &c. 
-)- See folio 46, note t. 
