Stem rather stout, 8 to 16 inches high, from a thick, short rootstock. Leaves rather dark green, very broadly rhombic, 3 to 7 inches long, often as wide or wider, sessile or nearly so, acuminate at the apex, narrowed at the base, peduncle 1 to 4 inches long, erect or nearly so, bearing a single, unpleasantly scented, large flower; sepals lanceolate, acuminate, spreading, one-half to 1 ½ inches long; petals lanceolate to ovate, acute, spreading, equalling the sepals or a little longer, dark purplish-red, varying to pink; greenish, white, or reddish yellow in certain aberrant forms; anthers longer than the filaments and exceeding the stigmas; ovary purple with short-spreading or recurved styles; fruit an ovoid, somewhat six-lobed, reddish berry, 1 inch thick or less.
Memoir 15 N. Y. State Museum
A. Red Trillium; Wake-Robin Or Birthroot - Trillium erectum