118 
The Ohio Naturalist. 
[Vol. XIII, No. 6, 
3. Petals obovate or oblanceolate, white or pinkish, sometimes darker 
with age. T. grandiflorum. (1) 
3. Petals ovate or lanceolate. 4. 
4. Peduncles 1-4 in. long, erect or declined; petals spreading, flowers ill- 
scented; dark purple, pink or white. T. erectum. (2) 
4. Peduncles usually less than 1 in. long, recurved beneath the leaves, 
petals recurved, white or pink. T. cernuum. (3) 
5. Leaves acuminate, about 6 in. long; flowers pure white. 
T. undulalum. (4) 
5. Leaves oval, obtuse or merely acute, small, flowers white with purple 
stripes at the bases. T. nivale. (5) 
6. Leaves sessile, sepals erect or spreading. T. sessile. (6) 
6. Leaves petioled, sepals reflexed. T. recurvatum. ( 7 ) 
1. Trillium grandiflorum (Mx,) Salisb. Large-flowered Tril¬ 
lium. Leaves peduncled, somewhat rhombic-ovate; petals 
oblanceolate or obovate, white or pinkish, sometimes darker with 
age; stamens with stout filaments and usually exceeding the 
slender stigmas. General. 
2. Trillium erectum L. Ill-scented Trillium. Leaves broadly 
rhombic, short acuminate; petals ovate or lanceolate, white, 
pink or deep purple; stamens exceeding the stout recurved 
stigmas; flowers ill-scented. General. 
3. Trillium cernuum L. Nodding Trillium. Leaves broadly 
rhombic ovate; peduncle usually less than one in. long and re¬ 
curved beneath the leaves; petals recurved, white or pinkish; 
filaments about equalling the anthers; stigma stout at the base, 
but tapering toward the apex. Auglaize, Champaign, Medina. 
4. Trillium undulatum Willd. Painted Trillium. Leaves 
ovate and taper-pointed; petals ovate or oval-lanceolate, pointed 
and wavy, white with purple stripes. Ashtabula county. 
5. Trillium nivale Ridd. Early Trillium. Small, 2-4 in. 
high. Leaves oval or ovate, obtuse; petals oblong, obtuse, white, 
scarcely wavy; styles long and slender. Miami, Clark, Greene, 
Franklin. 
6. Trillium sessile L. Sessile Trillium. Leaves sessile and 
usually mottled; flowers sessile; sepals spreading or erect, narrowly 
lanceolate or oblanceolate, dark and dull purple, varying to 
greenish. General. 
7. Trillium recurvatum Beck. Prairie Trillium. Leaves 
petioled and somewhat mottled, ovate, oblong or obovate; flowers 
sessile; sepals reflexed; petals clawed, dark purple. Auglaize, 
Hamilton. 
IS. Medeola L. 
A slender, erect, unbranched herb, clothed with deciduous 
tomentum, arising from a tube-like rootstock and bearing two or 
three whorls of oblong-lanceolate leaves and a sessile umbel of 
small, recurved flowers. Perianth of 6 equal, recurved, greenish- 
yellow segments; stamen filaments slender; styles 3, recurved. 
