ASCLEPIAS TUBEROSA, Linn.
N. ORD. ASCLEPIADACE . 135
SEX. SYST.—rENT.\Nr)RI.\ DIGVNI.X.
SYN.—ASCLEPIAS TUBEROSA, LINN. ; ASCLEPIAS CAULE ERECT. DIVAR.
VILLOS., ETC., HORT. CLIFF.; APOCYNUM NOV ANG. HIRSUT.
ETC., HERM. LUGDR
COM. NAMES.—PLEURISY-ROOT, BUTTERFLY WEED, ORANGE SWALLOW-
WORT, ORANGE MILK-WEED, ORANGE APOCYNUM, WIND
ROOT, WIND WEED, COLIC ROOT, WHITE ROOT; (FR.) ASCLEPIADB
TUBEREUSE ; (GER.) KNOLLIGE SCHWALBENWURZ.
A TINCTURE OF THE FRESH ROOT OF ASCLEPI.A.S TUBEROSA, LINN.
Description.—This attractive plant grows to a height of from i to 2 feet.
Root large, sarcous, fusiform and branching. Stems numerous, erect or oblique,
roughish hairy, branching superiorly, and leafy to the top ; they form an exception
to Asclepiadeae in general by being almost or entirely devoid of milky juice.
Leaves numerous, scattered, some falling opposite ; they may vary from linear to
linear- or oblong-lanceolate, be sessile or very short petioled, hirsute, mosdy
acute or subacute, and undulately wrinkled along the margin. Inflorescence
terminal cymose or corymbose clusters of short peduncled umbels ; floivers showy,
greenish- or orange-chrome. Calyx much smaller than the corolla ; sepals reflexed,
subulate, hidden under the lobes of the corolla. Petals or divisions of the
corolla oblong, at first extended then reflexed. Crown elevated conspicuously
above the base of the corolla; hoods or cncnlli erect, narrowly oblong, sessile,
somewhat broadened at the base, and about twice the length of the column ; horns
subulate, slender, nearly erect. Column short. Anthers shorter than the cuculli
taings truncate, broadest at the base. Pods lanceolate, acuminate, hoary.
Asclepiadacese.—This large family differs mainly from the preceding, and