( 0 .) 
CIRCLE' A*. 
Linncan Class and Order. Dia'ndria f, Monogy'nia. 
Natural Order. Circ^a , cea 2+, Lindl. Syn. p. 109; Introd. 
to Nat. Syst. p. 57 . — Onagra'ri/E, Juss. — Rich, by Macgilliv. 
p. 522. — Hook. FI. Scot. pt. ii. p. 258 . — Onagras, Juss. Gen. PI. 
p. 317. — Sir J. E. Smith’s Gram, of Bot. p. 166. 
Gen. Char. Calyx (fig. 2.) superior, deciduous, tubular at the 
base ; limb in 2, egg-shaped, deflexed segments. Corolla of 2, in- 
versely heart-shaped petals, alternate with the segments of the 
calyx. Stamens 2, alternate with the petals, inserted into the 
calyx. Filaments swelling upwards. Anthers roundish. Disk 
large, cup-shaped, filling up the whole of the tube of the calyx, and 
projecting beyond it. Ovarium ( Germen ) 2-celled, with an upright 
ovulum in each cell ; Style simple, arising out of the disk. Stigma 
dilated, notched. Fruit ( capsule J 2-celled, 2-valved, and 2-seeded. 
Seeds 1 in each cell, upright ; albumen none ; embryo upright ; radi- 
cle short, inferior. 
Herbaceous plants, with creeping roots, and opposite, stalked, 
toothed leaves. Flowers in terminal and lateral racemes, covered 
with uncinate (hooked) hairs. 
The superior tubular calyx in 2 segments ; the corolla of 2 petals ; 
and the 2-celled capsule, with only one seed in each cell ; will dis- 
tinguish this genus from all others in the same class and order. 
Two species British. 
CIllC/E'A LUTETIA'NA. Common Enchanter’s Nightshade. 
Spec. Char. Stem upright, downy. Leaves egg-shaped, 
pointed, slightly toothed, opaque and downy, longer than the foot- 
stalk. 
Eng Bot. t. 1056. — Curt. FI. Lond. t. 204. — Linn. Sp. PI. p. 12. — Huds. FI. 
Angl. (2nd ed.) p. 10. — Sm. FI. Brit. v. i. p. 13. F.ngl. Fl.v. i. p. 15. — With. 
(7th edit.) v. ii. p. 13. — Lindl. Syn. p. 110. — Hook. Brit. FI. p. II.— Lightf. FI. 
Scot. v. i. p. 80. — Sibtli. FI. Oxon. p. 9. — Abbot’s FI. Bedf. p. 7. — Purt. Midi. 
Fig. 1. A Flower, natural size. — Fig. 2. The same, with the petals removed, 
showing the Germen, Calyx, Disk, Style, and Stamens, magnified. — Fig. 3. Up- 
per part of the Disk andStvle, magnified. — Fig. 4. A Petal. — Fig. 5. Capsule. — 
Fig. 6. Section of ditto. — Fig. 7. A Seed. — Fig. 8. A Root. 
* From Circe, the Enchantress; either from the prettiness of its flowers, or, 
as some say, from growing in damp shady places, where plants used for incan- 
tations are found. Dr. Hooker, in Br. FI — According to Boerhaavk the name 
originated from the fruit, which is clothed with hooked bristles, laying hold on 
the clothes of passengers, and drawing them to it, as Circe was fabled to do by 
her enchantments. 
+ See Veronica chamaddrys, p. 50. note +• 
j An Order established by Dr. Findley, Professor of Botany in the Univer- 
sity of London, who observes, that “ it differs from Onagra'ri/e in its large 
fleshy disk, which fills up the tube of the calyx, in its solitary erect ovula, and 
in the binary division of the flower. It is connected with that order through 
Lopezia, with which it cannot, however, be absolutely associated; and bears 
about the same relation to On agr a* rize as is borne by H a lor age. e.” Syn. p. 
109 . — Circcea is the only genus in this Order, consequently the. character of the 
order is the same as that of the genus given above. See “ Observations on the 
Natural Order of th e Onagrdrice \ by A. L Jussieu.” Published in “An- 
nals of Botany,” vol. i. p. 530. 
