DESCRIPTION OF MEDICINAL PLANTS. 29 
lected in compound cymes. Fruit a black- purple berry. 
Rich soil, iu open ground. The flowers and the bark are 
used. 
Viburnum prunifolium, L. Black Haw. A small tree, flow- 
ering early, with nearly evergreen shining leaves, which are 
oval, obtuse or slightly pointed, finely and sharply serrate. 
Flowers white, in compound, sessile cymes, 3-5 rayed. 
Fruit black, oval long, edible. This is a very ornamen- 
tal plant and deserves cultivation. The bark, collected in 
fall. 
Triosteum perfoliatum, L. Horse Gentian. Fever-wort. A 
shrub-like, perennial herb, softly hairy, leafy to the top, 
2-4° high. Leaves oval, abruptly narrowed below, connate 
round the stem, downy beneath. Flowers sessile, clustered 
in the axils, brownish purple. Calyx-lobes linear- lanceolate, 
leaflike, persistent. Corolla tubular, gibbous at base, some- 
what equally 5-lobed, scarcely longer than the calyx. Fruit 
orange-color, long. Copiously growing in the limestone 
belt, around the foot of the Cumberland Mountains. Cowan, 
Winchester. FI. May. The root is collected. 
Triosteum angustifolium, L. Very similar to the foregoing, is 
smaller, bristly- hairy and the leaves lanceolate. It serves 
the same purpose as the former. It occurs on the slopes 
and at the foot of the Chilhowee and Smoky Mountains. 
Diervilla trifida, Mcench. Low, upright shrub, with ovate or 
oblong, pointed, petioled, serrate leaves. Peduncles cymose- 
ly 3-several flowered, from the upper axils or terminal. 
Calyx-tube tapering at the summit ; the lobes slender, awl- 
shaped, persistent. Corolla funnel-form 5-lobed, almost 
regular. Stamens 5. Pod long-beaked, 2-celled, 2-valved, 
many-seeded. Flower honey-color. FI. June-August. On 
some drug lists. Bark and root. 
RUBIACEAE. (Madder Family.) 
Cephalanthus occidentalis, L. Button-bush. A name expressive 
of the aggregation of the flowers into heads. A bushy shrub 
