a PENTANDRIA, DIGYNIA, 
Spectres. 1. C. deve? stem erect, subsarmentose, mirk- 
ed with an alternating pubescent line; leaves smooth, 
subcordate-ovate, acutely acuminate, sinus at the base, 
nearly closed; margin and nerves on the under side, mi- 
nutely pubescent; petiole very short; peduncle long; um- 
bell interrupted, compound, umbelluli few-flowered; seg- 
ments of the corolla, oval-oblong, obtuse; follicles smooth? 
—Lepanthium cylindric, retusely 5-toothed, nearly entire. 
Possessing all the habit of Asclépias Vincetoxicum. Flow- 
ers small, greenish white. 
Probably Gonolobus levis. Micu. 1. p. 119. 
2. angustifolium. Stem twining, smooth; leaves smooth, 
narrow, and. linear, thickish; umbell upon a long peduncle; 
segments of the corolla Janceolate—Lepanthium cylin- 
dric, obtusely 5-toothed. Follicles—? Flowers small and 
‘ is. Pursu. 1.p. 184. From Carolina 
to Florida twining round rushes and other marsh plants. . 
The genus Cynanchum appertains principally to the 
warmer regions of America, a smaller number to India 
and Africa, 2 to the south of Europe, exclusive of Vince- 
toxicum so closely allied to this genus; and 1 species even 
extends to Siberia. Cynanchum is not altogether desti- 
tute of medical economy; the root of C. Jpecacuanha of 
Ceylon and the isle of France is used as an emetic in 
doses of 24 grains, and it has recently been discovered in 
France that the Senna of the shops was in reality the 
leaves of a species of Cynanchum disguised by an useless 
admixture of those of the Cassia Senna. 
242. * ENSLENTA,} — 
~ Calix small, 5-parted, persistent. Corolla 5- 
parted, segments connivent, erect. Lepanthium 
simple, 5-parted, petaloid, divided to its base, 
segments truncate, flat. each terminated by 2 
central filaments. Stamina as in Asclepias. Pol- 
limwm, lobes subcylindric, laterally stipitate. 
e 0. Stigma conic, subbilamellate. Fol- 
t Mr. Aloysius Enslen, an assiduous 
and practical st, patronised in his researches in the United 
See ws ae ee $i Ansivin, and :to whom Me 
Purs indebted ts 
she Sbuurtees’ Be s. ed for many yell ates : 
