DESCRIPTION OP MEDICINAL PLANTS. 
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linia), one or two in each anther cell and connected with the 
stigma, or rather stigmatic disk, in pairs or fours, by means 
of 5 glands, alternate with the anthers. Corolla reflexed in 
anthesis. Hoods narrowly oblong, much surpassing the 
anthers, almost as long as the purplish or slightly greenish- 
orange oblong corolla-lobe, nearly equalled by the filiform- 
subulate horn ; follicles cinereous-pubescent. Dry soils, old 
fields, growing in poor ground. FI. May. The root, col- 
lected in summer. 
Asclepias incarnata, L. Swamp Milkweed. Nearly glabrous 
or slightly pubescent, stem 2-3° high, 5-6° in Var. longifo- 
lia, very leafy to the top, sometimes branching ; leaves ob- 
long-lanceolate, or in Var. longifolia, which is with us the 
usual form, elongated or linear-lanceolate, 4-7 inches long, 
i~¥ wide, glabrous or with minute pubescence. Flowers 
purplish, small ; hoods 1" long and equalling the anthers; 
follicles naked, fusiform, erect, on erect pedicels. In river- 
swamps, very common. FI. July. The rhizome, collected 
in summer. 
Asclepias Cornuti, Decaisne. Common Milkweed. Finely soft- 
pubescent or tomentulose ; leaves opposite, green and early 
glabrate above, oval or oblong, obtuse or roundish at base; 
short-petioled, transversely veined, peduncles little longer 
than the very numerous pubescent pedicels; corolla dull- 
purple or greenish-purple, the lobes ovate, 3-4" long; hoods 
whitish, ovate, rather longer than the anthers, with a tooth 
on each side below the middle ; the subulate horn short and 
incurved, column short. Stem stout and simple, 5° high. 
Frequent in fields and margins of woodlands. FI. July. 
The rhizome. 
LOGANIACEaE. (Logania Family.) 
Gelsemium sempervirens, Ait. Yellow Jessamine. Twining 
and glabrous shrubby plant, leaves evergreen, thin-coriace- 
ous, shining, oblong or ovate-lanceolate, 1J-2J' long; pe- 
duncles very short, axillary, scaly-bracteolate, cymosely 1-3 
