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P A l l s i ss» a a a<
ASCLEPIAS QUADRIFOLIA.
FOUR-LEAVED SWALLOW-WORT.
Pentandria Digynia, Linn. Apocynex, Juss.
GENERIC CHARACTER.
Calix small, 5-parted, persistent. Corolla rotate, mostly reflected. Lepanthium simple,
5-parted. Segments ovate, cucullate, each producing from its base an internal
subulate averted awn. Antherideum 5-parted, crustaceous, sessile, angles
opening by five longitudinal chinks. Follicles 2, ventricose, acuminate, smooth
or muricate. Seed comose. Nutt.
SPECIFIC CHARACTER.
Stem erect, simple, smooth; leaves ovate, acute, petiolated; in the middle of the
stem, the large ones in four’s j umbels two, terminal, loose-flowered; pedicels
filiform. Jacquin.
Stem twelve or fifteen inches high, smooth, simple, erect, yellow,
terete, convoluted, striated and reddish below. Leaves ovate, acute;
four in a whorl at the middle of the stem, of which two are generally
von. ii. 5
