282 LILIACEAE (LILY FAMILY) 



e. Style or styles filiform / 



/. Style single, entire or more or less deeply parted g. 

 g. Style 8-parted to below the middle. 



Leaves perfpliate 11. UVITLARIA. 



Leaves sessile, not perfoliate 12. CUKESIA. 



g. Style entire or slightly 3-lobed at the summit h. 



h. Stem rhizomatose at the base 15. HEMEROCALLIS. 



Ji. Stem bulbous at the base i. 



i. Bulb solid (a corm) ; leaves 2, basal 17. ERYTHRONIUM. 



i. Bulb scaly ; stem leafy 16. LILIUM. 



*. Bulb tunicate. 



Perianth-segments 1-nerved. 



Herbage with the odor of onion 13. ALLIITM. 



Herbage without strong odor 14. NoTnoacoRDUM, 



Perianth-segments 3-several-nerved. 



Perianth blue ; filaments thread-like . . . .18. CAMASSIA. 

 Perianth greenish-white ; filaments broad . . .19. ORNITIIOGALITM. 

 /. Styles 3, distinct to the base j. 

 j. Stigmas linear. 



Perianth-segments purplish ; seeds many in each cell . . 3. HELONIAS. 

 Perianth-segments white ; seeds 2 in each cell ... 2. XEROPHYLLUM. 

 j. Stigmas terminal. 



Anthers 2-celled 5. TOFIELDIA. 



Anthers confidently 1-celled. 

 Stem pubescent. 



Perianth-segments clawed 9. MELANTHITTM. 



Perianth-segments essentially sessile . . . .10. VERATRUM. 

 Stem glabrous. 



Perianth-segments glandular near the base ... 8. ZYGADENUS. 

 Perianth-segments not glandular. 



Flowers polygamous 7. STENANTHIUM. 



Flowers perfect 6. AMIANTHIUM. 



1. NARTHECIUM [Mohring] Juss. BOG ASPHODEL 



Sepals 6, linear-lanceolate, yellowish, persistent. Anthers linear, introrse. 

 Seeds ascending, appendaged at each end with a long bristle-form tail. Root- 

 stock creeping, bearing linear equitant leaves, and a simple stem or scape termi- 

 nated by a simple dense bracteate raceme ; pedicels bearing a linear bractlet. 

 (Name an anagram of Anthericum, from d^pt/cos, supposed to have been the 

 Asphodel.) 



1. N. americ^num Ker. Stem 2.5-4 dm. high; leaves 0.7-1.5 mm. wide, 

 7-9-nerved ; raceme dense (2-5 cm. long) ; perianth-segments narrowly linear 

 (4-5 mm. long) , scarcely exceeding the stamens. (Abama Morong. ) Sandy 

 bogs, pine-barrens of N. J. June, July. 



2. XEROPHYLLUM Michx. 



Perianth widely spreading ; sepals petal-like (white) , oval, distinct, without 

 glands or claws, 5-7-nerved, at length withering, about the length of the awl- 

 shaped filaments. Anthers 2-celled, short, extrorse. Styles thread-like, stig- 

 matic down the inner side, persistent. Capsule globular, 3-lobed, obtuse (small). 

 Seeds collateral, 3-angled, not margined. Herb with the stem simple, from a 

 thick tuberous rootstock, bearing a simple dense bracteate raceme of showy 

 flowers, and thickly beset with needle-shaped leaves, the upper reduced to 

 bristle-like bracts ; those from the root in a dense tuft, reclined, rough on the 

 margin, dry and rigid. (Name from ^p6s, arid, and 0i;XXoi>, leaf.) 



1. X. asphodeloides (L.) Nutt. Stem 3-12 dm. high. (X. setifolium Michx.) 

 Pine-barrens, N. J. to e. Tenn., and Fla. June. 



3. HEL6NIAS L. 



Perianth of 6 spatulate-oblong purple segments, persistent, several-nerved, 

 glandless, turning green, shorter than the thread-like filaments. Anthers 

 2-celled, roundish-oval, blue, extrorse. Styles revolute, stigmatic down the 

 inner side, deciduous. Capsule obcordately 3-lobed, loculicidally 3-valved ; the 

 valves divergently 2-lobed. A smooth perennial, with many oblong- spatulate 



