ii8 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. cernuiim. (3) 



5. Leaves acuminate, about 6 in. long; flowers pure white. 



T. undulatum. (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 pcduncled, 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 Trillimn. 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 Trillitmi. 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 wav}^; styles long and slender. Miaini, Clark, Greene, 

 Franklin. 



G. Trillium sessile L. Sessile Trillium. Leaves sessile and 

 usually mottled; flowers sessile; sepals spreading or erect, narrowly 

 lanceolate or oblanceolate, dark and dtill 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. 



18. Medeola L. 



A slender, erect, unbranched lierb, clothed with deciduous 

 tomentum, arising from a tul^c-likc 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. 



