A glabrous, erect, unbranched herb from a stout, perennial, short, scarred rootstock, 8 to 18 inches high; bearing at the top of the stem three light-green, broadly rhombic-ovate or rhombic-oval leaves, 2 to 6 inches long, acuminate at the apex, narrowed and sessile at the base, peduncle erect or nearly so, 1 to 3 inches long, bearing a single flower 2 to 3 inches broad. The three sepals lanceolate, pointed and spreading. Petals three, erect-spreading, oblanceolate, obovate, or rarely ovate-oblong, obtuse or cuspidate, thin, strongly veined, white, usually turning pink with age, much longer than the sepals. Stamens six, with yellow anthers which are about one-half of an inch long; the three styles slender and ascending. Fruit a globose, black, slightly six-lobed berry, three-fourths to I inch in diameter.

Memoir 15 N. Y. State Museum

Plate 23

B. White Trillium; Large Flowered Wake Robin

B. White Trillium; Large-Flowered Wake-Robin - Trillium grandiflorum

In rich woods, preferring ravines and wooded upland slopes, Quebec to Ontario and Minnesota, south to North Carolina and Missouri.

Various monstrous forms sometimes occur with two to several long-petioled leaves, double flowers, and even forms with green, variegated or leaflike petals.