ANALYTICAL KEY !S 



gf. Leaves lanceolate or broader, in whorls of three (Trilliuin). 

 h. Flower sessile. 

 1. 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). 

 hi Flower pedicelled. 

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

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



TRILLIUM EREGTUM (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. 

 ff. Flowers hypogynous CLily family), (p. 16.) 

 h. Flowers green or greenish. 

 !■ Flowers perfect. 

 ji Leaves in whorls. 



Cucumber Root, MEDEOLA VIRGINIAITA (p. 38). 



3. Leaves not in whorls. 



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



BISPORUM LANUGINOSUM (p. 38). 



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



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



peduncles 1—3 flowered; perianth 10-12 mm. long; filaments 



papillose roughened. POLYGONATUM BIFLORUM (p. 38). 



1. Leaves glabrous, partly clasping; peduncles 2—8 flowered; perianth 



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



POLYGON ATUM COMMUTATUM (p. 38). 

 ii Flowers not perfect. 

 j. Flowers polygamo-monoecious. 



False Hellebore, VERATRUM VIRIDE (p. 34). 

 j. Flowers dioecious. Carrion Flower, SMILAX HERBACEA (p. 40). 

 h. Flowers yellow or yellowish. 

 i. Leaves radical. Yellow Adder's Tongue Lily, — ^' 



ERYTHRONIUM AMERICANUM (p. 36). 

 1. Leaves whorled. Cucumber Root, MEBEOLA VIRGINIANA (p. 38). 

 1. 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 z mm. long; leaves downy. 



SMILACINA RACEMOSA (p. 36). 



