(IBS.) 
HYDROCO'TYLE* *. 
Linnean Class and Order. Penta'ndria f, Digy'MA. 
Natural Order. Um r ei.i.i 'fer./e, Juss. Gen. Plant, p. 218. — 
Sm. Gram, of Dot. p. 132. — I.indl. Syn. p. 111. ; Introd. to Nat. 
Syst. of Bot. p. 4. — Rich, by Macgilliv. p.463. — Loud. Hort. Brit, 
p. 517. — Umrkllatve, Linn. — Rosales ; subord. Angelicoste ; 
sect-ANOELiciNiE; type, Angelicaceve ; subtvpe, Saniculid/e ; 
Burn. Outl. of Bot. pp. 614, 762, 770, 773, & 774. 
Gen. Char. Umbels simple or imperfect. Flowers (fig. 1.) 
all perfect, prolific, and regular. Calyx none. Corolla (fig. 1.) of 
5, equal, egg-shaped, entire, acute, spreading petals, with a straight 
point. Filaments (see fig. 1.) 5, awl-shaped, spreading, shorter 
than the corolla. Anthers roundish. Germen nearly round, com- 
pressed, ribbed, smooth. Styles (see figs. 1 & 2.) 2, cylindrical, 
moderately spreading, tumid at the base, shorter than the stamens, 
permanent. Stigmas simple. Fruit (fig. 2.) nearly round, com- 
pressed at the side, so as to form 2 little shields. Carpels ( seeds 
of Smith , ) (fig. 3.), with 5 filiform ridges, those of the keel and 
sides nearly obsolete, the intermediate arched, without t titter. 
Seed (fig. 5.) compressed and keeled. 
The simple umbel; equal, entire, flat petals, not indexed at the 
point; and the solid, laterally compressed, striated fruit; will dis- 
tinguish this from other genera in the same class and order. 
One species British. 
HYDROCO'TYLE VULGA'RIS. Common Water-cup. White- 
rot. Marsh Penny-wort. 
Spec. Char. Leaves peltate, orbicular, somewhat lobed and 
crenate. Umbels very small, of from 5 to 8, nearly sessile flowers. 
Engl. Bot. t. 751. — Curt. FI. Lond. t. — Ray’s Syn. p. 222. — Linn. Sp. PI. 
p.338. — Huds. FI. Angl. (2nd ed.) p. 110. — Sm. FI. Brit. v. i. p. 290. Engl. 
El. v. ii. p. 96. — With. (7th ed.) v. ii. p. 362. — Lindl. Syn. p. 128. — Hook. Brit. 
FI. p. 136. — Lightf. FI. Scot. v. i. p. 153. — Sibth. FI. Oxon. p. 91. — Abbot’s FI. 
Bed. p. 57. — l’urt. Midi. FI. v. i. p. 153. — Relh. FI. Cantab. (3rd ed.) p. 109. — 
Davies’ Welsh Bot. p. 27. — Hook. FI. Scot. p. 87. — Grev. FI. Edin. p. 61. — FI. 
Devon, pp. 47 & 165. — Johnst. FI. of Berw. v. i. p.71. — Walk. FI. of Oxf. p. 
84. — Curt. Brit. Ent. v. iii. t. 142. — Perry’s Plant® Varvic. Select®, p. 25. — 
Mack. Catal.of PI. of Irel. p. 27. — Hydrocbtyle vulgdre, Gray’s Nat. Arr. v. 
ii. p. tffl.—CotyUdon paliistris, Johnson’s Gerarde, pp.529 St 530. 
Localities. — O n moist heaths, boggy commons, and the margins of little 
clear rivulets, very frequent. 
Fig. 1. A separate Flower, showing the Petals, Stamens, Germen, and Pis- 
tils. — Fig. 2. The Fruit, crowned with the permanent pistils. — Fig. 3. The 
Carpels. — Fig. 4. A Carpel divided horizontally. — Fig. 5. A Seed . — All more 
or less magnified. 
• From udor, Gr. water ; and cotule, Gr. a cup or vase. The leaves are a 
little depressed, and stalked in the centre, and may thence somewhat resemble 
a cup or platter. Hooker. 
Seventeen exotic species of Hydrocotyle are enumerated in Loudon’s Ilortus 
Britannicus. 
t See Anchusa sempervirens, folio 48, note f- 
