ANALYTICAL KEY 15 



g. Leaves lanceolate or broader, in whorls of three (Trillium). 

 h. Flower sessile. 

 i. Leaves sessile; sepals spreading; petals dull purple to greenish. 



TRILLIUM SESSILE (p. 39). 

 I. Leaves petioled; sepals reflexed; petals dark purple. 



TRILLIUM RECURVATUM (p. 39). 

 h. Flower pedicelled. 



i. Petals ovate to lanceolate, brown purple (or white or greenish) ; 

 stigmas stout and spreading or recurved; flowers ill-scented. 



TRILLIUM ERECTUM (p. 39). 

 i, Petals oblanceolate, white; stigmas slender, erect or nearly so. 



TRILLIUM GRANDIFLORUM (p! 40). 



f. Perianth lobes approximately similar in color and otherwise. 

 g. Flowers hypogynous (Lily family). (p. 16.) 

 h. Flowers green or greenish, 

 i. Flowers perfect. 

 j. Leaves in whorls. 



CUCUMBER ROOT, MEDEOLA VIRGINIANA (p. 38). 

 J. Leaves not in whorls. 



k. Flowers terminal, solitary or in umbels; perianth segments distinct. 

 DISPORUM LANUGINOSUM (p. 38). 



k. Flowers axillary; perianth segments not distinct (Solomon's seal). 



1. Leaves minutely pubescent and glaucous beneath, nearly sessile; 



peduncles 13 flowered; perianth 10-12 mm. long; filaments 



papillose roughened. POLYGON ATUM BIFLORUM (p. 38). 



1. Leaves glabrous, partly clasping; peduncles 28 flowered; perianth 



12-20 mm. long; filaments smooth or nearly so. 



POLYGONATUM COMMUTATUM (p. 38). 

 1. Flowers not perfect. 

 j. Flowers polygamo-monoecious. 



FALSE HELLEBORE, VERATRUM VIRIDE (p. 34). 



j. Flowers dioecious. CARRION FLOWER, SMILAX HERB ACE A (p. 40). 

 h. Flowers yellow or yellowish. 

 i. Leaves radical. YELLOW ADDER'S TONGUE LILY, 



ERYTHRONIUM AMERICANUM (p. 36). 



i. Leaves whorled. CUCUMBER ROOT, MEDEOLA VIRGINIANA (p. 38). 

 i. Leaves cauline but not whorled. 

 j. Leaves perfoliate (Bellwort). 



k. Leaves glaucous and glabrous; perianth granular pubescent within; 

 stamens shorter than the styles. UVULARIA PERFOLIATA (p. 35). 

 k. Leaves pubescent beneath, not glaucous; perianth smooth or nearly 

 so; stamens exceeding the styles. 



UVULARIA GRANDIFLORA (p. 35). 

 j, Leaves sessile. 



k. Stem angled, smooth. OAKESIA SESSILIFOLIA (p. 35). 



k. Stem round, hairy. DISPORUM LANUGINOSUM (p. 38). 



h. Flowers white or whitish, 

 i. Flowers large, solitary. WHITE ADDER'S TONGUE LILY, 



ERYTHRONIUM ALBIDUM (p. 36). 



i. Flowers small, disposed in racemes or panicles (False Solomon's seal). 

 j. Flowers in panicles; pedicels very short; stamens exceeding the 

 perianth segments which are about 2 mm. long; leaves downy. 



SMILACINA RACEMOSA (p. 36). 



