The partially dried corm of the Arisaema triphyllum, Torrey
(Arum triphyllum, Linné). COMMON NAMES: Indian turnip, Jack-in-
the-pulpit, Dragon-root, Wake-robin. ILLUSTRATIONS: Willdenow,
Sp. Plant IV, 480, as Arum triphyllum; also as same in Bigelow,
Amer. Med. Bot. I, 52; Johnson's Med. Bot. of N. A., 263.
Botanical Source.—Indian turnip has a round, flattened,
perennial, rhizome (cormus), the upper part of which is
tunicated like the onion, the lower and larger portion tuberous
and fleshy, giving off numerous long, white radicles in a
circle, from its upper edge; the under side is covered with a
dark, loose, wrinkled epidermis The spathe is ovate, acuminate,
convoluted into a tube at the bottom, flattened and bent over at
the top like a hood, varying in color internally, being green,
dark-purple, black, or variegated with pale-greenish stripes on
a dark ground, supported by an erect, round, green, purple, or
variegated scape, invested at the base by the petioles and their
acute sheaths. The spadix, situated