281 
LVI. GENTIANACEA2. 
[ Chlora. 
4. Chlora Linn. Yellow-wort. 
Cal. of 8 deep segments. Cur. nearly rotate. Slam. 8. Style 
1, deciduous. Stigmas 2, bifid. Caps 1 -celled, 2-valved, many- 
seeded. — Name derived from pale or yellowish green ; 
in allusion to the colour of its flowers. 
1. C . perfolidla L. ( perfoliate Y.) ; leaves connate-perfoliate 
ovate glaucous. E. B. t. 60. 
Chalky and hilly pastures, chiefly in the middle and southern parts 
of England. In Ireland on gravelly soil about Dublin, frequent. 
0. 6—9. — Plant very glaucous, with remote leaves, panicled above, 
and bearing many bright yellow flowers, very bitter. 
B. Segments of the corolla induplicate in (estivation. Leaves 
alternate. (Gen. 5, 6.) 
5. Menyanthes Linn. Buckbean. 
Cal. 5-partite. Cor. funnel-shaped, fleshy, the segments 
hairy within. Stam. 5. Stigma 2-lobed. Capsule 1-celled, 
2-vulved ; valves bearing the seeds along their middle ; seeds 
parietal. — Name : a month , and avUog, a flower ; some say 
from the duration of the flower. 
1. M. trifolidta L. ( Buckbean , or Marsh Trefoil) : E. B. 
t. 495. 
Marshy places, boggy ground, &c., frequent. If . 5 — 7. — Rhizomes 
densely creeping, and so matted as often to render the boggy ground 
firm where the plant grows. Leaves ternate, stalked : leaflets obovate, 
obscurely toothed. The base of the leaf is sheathing, whence arises 
a flower-stalk, supporting a compound raceme or thyrsus of many white 
flowers, each tipped externally with red and beautifully clothed with 
white filaments within. 
6. Villarsia Vent. Villarsia. 
Cal. 5-partite. Cor. rotate or funnel-shaped, thin and mem- 
branous, the limb often ciliated. Stam. 5. Caps. 1-celled, 
indehiscent (or 2-valved, the seeds attached to the margins of 
the valves). — Named in compliment to M. de Villars, author 
of Flore de Dauphine. 
1. V. nymphceoides Vent. ( Nymphcea-lihe V.) ; leaves orbi- 
cular-cordate floating, peduncles aggregate single-flowered, 
corollas ciliate. Menyanthes L. : E.B.t. l 2\7. Liinnanthe- 
mum Link. 
Rare in rivers and still waters. Found in many places in England 
and Ireland, but usually where introduced. Certainly not indigenous 
in Scotland. 2f. 7, 8. — A beautiful plant, easy of cultivation, and 
difficult to be eradicated. Flower large, yellow, curiously plaited. The 
canals in Holland are in some parts covered with this plant, which has 
