92 American Midland Naturalist Monograph No. 2 



6. Leaves foliaceous. 



7. Flowers in axillary umbels, dioecious; leaves net-veined; fruit a berry 



20. Smilax 



7. Flowers not in umbels. 



8. Stem simple; perianth-segments united below the middle; flowers green- 

 ish; fruit a berry 17. Polygonaium 



8. Stem forked above; perianth-segments free; flowers yellowish; fruit a 

 capsule 1 6. Uviilaria 



5. Flowers in a termmal raceme or panicle. 

 9. Leaves linear; styles 3, separate. 



10. Stem puberulent above; perianth-segments clawed, and (in our species) 

 bearing a pair of glands; plants with a rhizome 4. Melanihium 



10. Stem glabrous; plants from a bulb. 



I 1 . Perianth-segments lanceolate, acuminate, glandless; panicle many- 

 flowered 1 . Slenaidhiiim 



1 I . Perianth-segments bearing a large obcordate gland; raceme simple 

 or sparingly branched, few-or several-flowered 2. Zigadenus 



9. Leaves not linear. 



12. Leaves 2 or 3, cordate at base; perianth-segments 4, white; stamens 4; 

 fruit a berry 15. Maianthemum 



12. Leaves several, lanceolate; perianth-segments and stamens each 6. 



13. Flowers (in our species) greenish purple; styles 3; leaves strongly 



veined; fruit a capsule 5. Veratrum 



13. Flowers white; style short, single; fruit a berry 14. Smilacina 



1. Leaves all or mostly basal, or apparently so, rarely absent at flowering time; fruit 

 a capsule. 

 14. Flowers 6-12 cm. long, orange; perianth-segments united below; leaves linear.... 



8. Hemerocallis 



14. Flowers smaller, not orange. 



15. Flower solitary, nodding; leaves 2 (or 1); plants from deep-seated corms 



10. Ervthrouium 



15. Flowers several. 



16. Flowers in racemes. 



17. Flowers whitish, small; leaves equitant; inflorescence glandular; plants 

 with a short rhizome 3. Toficldia 



17. Flowers lavendar (rarely white); leaves not equitant; plants glabrous, 



from a bulb I I. Camassia 



16. Flowers in a corymb or umbel; plants with bulbs. 



18. Flowers in a corymb, greenish white; filaments flattened at the base; 



midvein of leaves whitish 12. Ornithogalam 



18. Flowers m an umbel. 



19. Plants with the odor and taste of onions (alliaceous) ; flowers often 

 replaced by bulblets; seeds 1 or 2 in each locule of the capsule 

 6. AUhim 



19. Plants not alliaceous; seeds several in each locule 



7. Noihnscordum 



I. Stenanthium (Gray) Kunth 

 S. graimneum (Ker) Morong. Woods, and moist ground along creeks, 

 rare, s. 111.; extending nortliw. to Richland, Fayette, and Pike counties. June- 

 Aug. 



2. Zigadenus Michx. — Death Camas 



Z.. glaucus Nutt. Bogs, n. 111., not common. July-Aug. [Z- chloranthus of 

 auth., not Richards.; Z. elegans of auth., not Pursh]. 



