352 GENTIANACEM, (GENTIAN FAMILY.) 
6. DATURA, L. Jampstown-Weep. "THORN-APPLE. 
Calyx tubular, terete or angled, 5-cleft, separating near the base, the upper 
portion deciduous. Corolla funnel-shaped ; the limb plaited, 5-lobed, convolute 
in the bud. Stamens 5: anthers opening lengthwise. Capsule spiny, imper- 
fectly 4-celled, 4-valved, many-seeded. — Strong-scented poisonous herbs, with 
petioled oblong or ovate mostly toothed leaves, and large solitary flowers in the * 
forks of the branches. 
1. D. Stramonium, L. Smooth; stem stout, forking ; leaves ovate or 
oblong-ovate, acute, sinuate-toothed ; corolla sharply 5-toothed, white, twice as 
long as the 5-angled calyx; capsule erect.— Var. TTATULA. Larger; leaves 
often cordate; stem and corolla purplish.— Waste ground, very common. 
June - Oct. — Stem 19 - 39 high. Leaves 4/- 8! long. Corolla 3! — 4! long. - 
2. D. Metel, L. Pubescent; stem stout, branching ; leaves ovate, entire 
or slightly toothed ; corolla white, 10-toothed ; calyx loose, terete; capsule nod- 
ding. — North and South Carolina, Curtis. Introduced. — Stems 39 - 49 high. 
Leaves 6'-8/long, Corolla 6! long. TO 
The PETUNIA, Niconr-BroowiNG JESSAMINE (CEsrRuM), and TonAcco 
(Nicorrana), belong to this family. 
ORDER 101. GENTIANACEA. (GENTIAN Fawn). 
Chiefly smooth and bitter herbs, with colorless juice, opposite entire 
partly sheathing exstipulate leaves, and regular often showy flowers — 
Calyx 4—12-parted, or 4—12-cleft. Corolla 4 — 12-lobed, convolute, rarely 
valvate or imbricated, in the bud, hypogynous. Stamens alternate with 
the lobes of the corolla, and inserted on its tube: anthers 2-celled. Ovary 
‘single, with numerous anatropous ovules. Stigmas 1 - 2. Capsule. Ki 
celled, or imperfectly 2- 4-celled by the introversion of the margins of the 
valves, septicidally 2-valved. Placentæ parietal. Seeds numerous. Em, 
bryo minute, in the axis of fleshy albumen. 
Synopsis. AA 
* Corolla convolute, or (in Obolaria) imbricated in the bud. Testa membranaceous. — Leave? 
sessile. 
l SABBATIA. Style conspicuous, deciduous.  Stigmas linear, twisted. Corolla wheel- 
—— shaped, 5- 12-parted. i dud 
2. EUSTOMA. Style conspicuous, persistent. Stigmas roundish, flat. Corolla tubular, 4- - 
9. GENTIANA. Stigmas sessile, flat, persistent. Corolla bell-shaped or funnel-form, es 
....lobed, mostly with plaited appendages between the lobes. is 
1. BARTONIA. Calyx and corolla 4-lobed. Stigmas sessile. Leaves scale-like. 
5. OBOLARIA. Calyx 2-leaved. Corolla 4lobed, imbricated in the bud. mr 
6. FRASERA. Corolla wheel-shaped, 4-parted, the lobes with a large depressed gland in 
[Be oe * Corolla folded in the bud. Testa woody. Petioleselongated. — 
2 T. LIMNANTHEMUM. Leaves floating, cordate. Flowers clustered on the petiole. 
