(201. j 
DRO'SERA* *. 
Linnean Class and Order . Penta'ndria f, Hexagv '.via. 
Natural Order. Drosera'cEjE, De Cand . — Lindl. Syn. p. 38 ; 
Introd. to Nat. Syst. p. 153. — Rich, by Macgilliv. p. 504. — I.oud. 
Hort. Brit. p. 501. — Don’s Gen. Syst. ofGard. & Bot. v. i. p.343. — 
Rosales; suborder, Rhceados.e ; type, DroseracEjE; Burn. 
Outl. of Bot. v. ii. pp. 614, 784, & 800. — Grltinales, Linn. — 
Allied to Capparides, Juss. Gen. PI. p. 244. — Sm. Gram, of Bot. 
p. 140. 
Gen. Char. Calyx (fig. 1.) inferior, of 1 sepal, with 5 deep, 
pointed, upright, permanent segments. Corolla (fig. 2.) of 5 petals, 
without appendages, rather longer than the calyx. Filaments (see 
figs. 2 & 3.) 5 to 8, awl-shaped, as long as the calyx. Anthers 
small, roundish. Germen (see fig. 4.) roundish. Styles (see fig. 4.) 
6"to 8, simple. Stigmas club-shaped. Capsule (see figs. 5 & 6.) 
egg-shaped, of 1 cell, with from 3 to 5 valves. Seeds (fig. 8.) nu- 
merous, minute, inversely egg-shaped, rough, attached to the inside 
of each valve, chiefly in the middle. 
(Herbaceous plants, with leaves clothed with beautiful glandu- 
lar hairs.) 
The 5-cleft calyx ; the corolla of 5 petals ; and the 1-celled, 
3- (sometimes 4- or 5-) valved, many-seeded capsule ; will distin- 
guish this from other genera in the same class and order. 
Three species British. 
DRO'SERA ROTUNDIFO'LIA. Round-leaved Sun-dew. Red- 
rot. Youth-wort. Moor-grass. Ros Solis. 
Spec. Char. Leaves radical, nearly orbicular ; footstalks hairy, 
longer than the limb. Scapes naked, upright, 4 or 5 times higher 
than the leaves. Seeds chaflfy. 
Engl. Bot. t. 868. (text to 867.) — Linn. Sp. PI. p. 402. — Huds. FI. Angl. (2nd 
edit.) p. 135. — Sm FI. Brit. v. i. p. 346. F.ngl. FI. v. ii. p. 122. — With. (7th ed.) 
v. ii. p. 410. — Gray’s Nat. Arr. v. ii. p. 664. -Lindl. Syn. p.38. — Hook. Br. FI. 
p. 148. — Lightf. FI. Scot. v. i. p. 175. — Sibth. FI. Oxon. p. 106. — Abbot’s FI. 
JBedf. p. 71. — Davies’ Welsh Bot. p. 32.— Purt. Midi. F). v. i. p. 166 — Relh. 
FI. Cant. (3rd ed.) p. 133. — Hook. FI. Scot. p. 98. — Grev. FI. Edin. p. 74. — FI. 
Devon, pp. 56 & 186. — Johnst. FI. of Berw. v. i. p. 74. — Winch’s FI. of North, 
and Durham, p. 21. — Rev. G. E. Smith’s PI. of S. Kent, p. 20. — Don’s Gen. 
Syst. of Card. Or Bot. v. i. p. 345. — Walk. FI. of Oxf. p. 89. — Perry’s PI. Yarv. 
Select, p. 28. — Mack. Cat. of PI. of Irel. p. 32 ; Flora Hibernica, p. 34. — Irish 
FI. p. 66. — Rorella rotundifolia perennis, Ray’s Syn. p. 356. — Ros solis folio 
rotundo, Ray’s Syn. p. 356.— Johnson’s Gerarde, p. 1556. 
Localities. — I n mossy turfy bogs, generally among sphagnum ; frequent. 
Perennial. — Flowers in July and August. 
Roof fibrous. Stem almost always entirely wanting. Leaves nu- 
merous, on long hairy footstalks, depressed, nearly circular, purplish, 
Fig. 1. Calyx. — Fig. 2. A separate Flower. — Fig. 3. The Stamens, Germen, 
and Pistils. — Fig. 4. Germen and Pistils. — Fig. 5. A Capsule. — Fig. 6. A trans- 
verse section of the same. — Fig. 7. A Seed. — Fig. 8. One of the glandular viscid 
Hairs, with a globule of pellucid liquor-like dew at its summit. 
* From droseros, Gr. dewy ; because the plants appear as if covered w ith dew, 
in consequence of being covered with glandular hairs. Don. 
t See Anchusa sempervirens , folio 48, note f. 
