CLASS V. ORDER IL 
41 
F. Flowers incomplete. 
Hamilto'nia. Polygamous ; perianth turbinate, r*- mpanulate, 5-clefi ; corolla 0; 
nectary with the disk 5-toothed ; style 1 ; stigmas 2 or 3, germ immersed in the 
nectary ; drupe 1-seeded, enclosed in the adhering base of the calyx, (oil nut.) 
The'sium. Perianth 4 or5-cleft; stamens 4 or- 5, villous externally; nut 1- 
seeded, covered by the persistent perianth, (false-toad flax.) 
Glaux. Calyx campanulate, 5-lobed, coloured; capsule globose, 5-valved, 5- 
seeded, surrounded by the calyx. 
ORDER II. DIGYNIA. 
A. Corolla 1-petalled, inferior. 
Gentia'na. Calyx 4 or 5-cleft ; corolla with a tubular base, bell-form, without 
pores, 4 or 5-cleft ; stigmas 2, sub-sessile; capsule 1-celled, oblong; columellas 
2, longitudinal ; stamens but 4, when the divisions of corolla are 4. (gentian.) 
Cuscu'^TA. Calyx 4 or 5-cleft; corolla 4 or 5-cleft, sub-campanulate, wither- 
ing; capsule 2-celled, dividing transversely at the base ; seeds binate. (dodder.) 
Gelsemi/num. Calyx small, 5-leaved ; corolla funnel-form; border spreading, 
5-lobed, nearly equal; capsule 2-celled ; seeds flat. 
Hydro'lea. Calyx 5-petalled; corolla wheel-form, or bell-form; anthers cor- 
date ; style long, diverging ; stigma peltate ; capsule 2-celled. /S*. 
Dichon^'dra. Calyx 5-parted, with spatulate segments ; corolla short, bell- 
form, 5-parted ; stigma peltate, capitate ; capsule compressed, 2-celled, 4-seed- 
ed. 
EvoL^'vuLUs. Calyx 5-parted ; corolla bell-form ; styles 2, 2-cleft ; stigma 
simple. 
Swer'^a. Corolla rotate, with 2 pores at the base of each segment. 
B. Corolla b-pelalled. 
Pa'nax. Polygamous, umbelled, involucrum, many-leaved; Calyx 5-toothed, 
in the perfect flower, superior ; berry cordate, 2 or 3-seeded; Calyx in the sta- 
minate flower entire, (ginseng.) 
Heuche'ra. Calyx inferior, 5-cleft; corolla on the calyx; petals small; cap- 
sule 2-beaked, 2-celled, many-seeded, (alum-root.) 
C. Corolla wanting. 
Salso'la. Perianth inferior, 5-cleft, persistent, enveloping the fruit with its 
base, and crowning it with its broad scarious limb, (salt wort.) 
Atri'plex. Polygamous; calyx 5-leaved, 5-parted, inferior; style 2-parted ; 
seed 1 ; in the pistil^-te flowers the calyx is 2-parted. (orach.) 
Plane'ra. Calyx membranous, bell-form, 4 to 5-cleft; corolla 0 ; stigmas 2; 
capsule globose, membranous, 1-celled, 1-seeded ; vStamens4to 6 ; polygamous. S. 
Ko''cHiA. Calyx inferior, bell-form, 5-cleft, forming a permanent band around 
the fruit, somewhat resembling 5 petals ; corolla 0 ; style short ; stigmas 2 or 3, 
long, simple. S. 
Cel'tis. Perfect or polygamous ; perianth inferior, 5-lobed ; drupe globose, 
1-seeded. (nettle-tree.) 
Chenopo'dium. Calyx 5-parted, obtusely 5-angled, inferior; style deeply cleft; 
seed 1, lens-like, horizontal, invested by the calyx, (pig-weed, oak of Jerusalem.) 
Ulm'^us. Calyx bell-form, withering; border 4 or5-clefl; seed 1, enclosed in 
a flat membranaceous samara ; stamens vary from 4 to 8. (elm.) 
Beta. Cal5^x: 5-Ieaved ; seed kidney-form within the fleshy substance of th« 
base of the calyx, (beet.) Ex. 
[Plants umbelliferous ; flowers 5-petalled, superior ; seeds 2.] 
Eryn'^gium. Fruit ovale, with bristles; petals oblong, equal, inflected; flow- 
ers aggregate, forming a head. 
Sanic'/ula. Seeds with hooked prickles, oblong, solid; umbels nearly simple, 
capitate ; flowers polygamous ; involucre few-flowered ; calyx 3-parted, per- 
manent. 
Dau'gus. Seeds striate on their joining sides; outer sides convex, having 
hispid ribs ; involucrum pinnatifid ; flowers sub-radiate, abortive in the dis£ 
(carrot.) 
Urasper'mum. [Osmorhiza.]* Seeds sub-linear, solid, acute-angled, not stri- 
* Where two or more generic names are given, the pupil will understand that those withia 
lUe brackets are synonymes of the other name. 
