496 



LILIACEAE. 



Vol. I. 



Stem leafy. 



Flowers nodding ; perianth-segments with a nectary at the base. 



Flowers erect ; perianth-segments without a nectary. 

 Leaves only 2, appearing basal ; flowers bractless. 

 Outer segments narrower than the inner ; capsule septicidal. 

 Anthers introrse. 



Perianth of 6 separate segments. 

 Filaments filiform. 

 Filaments flattened. 

 Perianth globose, oblong or urn-shaped. 



tf Ovary half inferior ; roots fibrous ; flowers racemed. 

 ** Stem a woody caudex; leaves rigid, mostly bearing marginal fibers. 



7. Fritillaria. 



8. Tulipa. 



9. Erythronium. 

 10. Calochortus. 



11. Quamasia. 



12. Ornithogalum. 



13. Muscari. 



14. Aletris. 



15. Yucca. 



i. HEMEROCALLIS L. Sp. PL 324. 1754. 



Tall glabrous herbs, with fibrous roots, basal linear leaves and large erect or spreading 

 mostly orange or yellow flowers clustered at the ends of leafless scapes. Perianth funnel-, 

 form, its lobes oblong or spatulate, much longer than the cylindric tube. Stamens 6, inserted 

 at the summit of the perianth-tube, shorter than the lobes, declined; filaments filiform; 

 anthers linear-oblong, the sacs introrsely dehiscent. Ovary oblong, 3-celled; ovules numerous 

 in each cavity; style slender, declined, tipped with a small capitate stigma. Capsule oblong 

 or ovoid, thick-walled, 3-angled, wrinkled, loculicidally 3-valved. [Greek, beautiful for a day.] 



About s species, natives of Europe and Asia. Type species : H. Lilio-Asphodelus L. 



i. Hemerocallis fulva L. Day Lily. Fig. 1240. 



Hemerocallis fulva L. Sp. PI. Ed. 2, 462. 1762. 



Scapes 3°-6° high, stout, mostly longer than the 

 leaves. Leaves 4"~6" wide, channeled, tapering to an 

 acute tip; scape bearing several short bracts above; 

 flowers 6-15, short-pedicelled, tawny orange, panicled, 

 4'-S' long, opening for a day; tube of the perianth 

 i'-ii' long, the lobes oblong, somewhat spreading, 

 netted-veined ; the three outer nearly flat, acutish; the 

 3 inner undulate and blunt. 



In meadows and by streams, New Brunswick to Vir- 

 ginia and Tennessee. Europe and Asia. Escaped from 

 cultivation. Eve's-thread. Lemon-lily. June-Aug. 



Hemerocallis flava L., the Yellow day-lily, with yellow 

 flowers, their lobes parallel-veined, is occasionally found 

 near old gardens, and on roadsides. 



Niobe coerulea (Andr.) Nash, and N. japonica (Thunb.) 

 Nash, Plantain-lilies, with drooping flowers and broad 

 leaves, common in gardens, are occasionally established on 

 roadsides. 



2. LEUCOCRINUM Nutt.; A. Gray, Ann. Lyc. N. Y. 4: 110. 1837. 



A low acaulescent rather fleshy herb, from a short rootstock, the roots thick, fibrous. 

 Outer leaves membranous, acute, short; inner leaves linear, elongated, the innermost reduced 

 to bracts. Flowers large, white, umbellate from the subterranean axils. Pedicels filiform. 

 Perianth with a very narrow tube and a salverform limb, persistent, the 6 linear-oblong lobes 

 spreading, nerved, shorter than the tube. Stamens 

 borne near the top of the perianth-tube, shorter than 

 the lobes; filaments filiform; anthers linear, their 

 sacs introrsely dehiscent. Ovary ovoid, 3-celled; 

 style filiform, stigma small. Capsule oval or obo- 

 void, 3-angled, sessile, loculicidal. Seeds several 

 in each cavity, angled. [Greek, white lily.] 



A monotypic genus of northwestern North America. 



1. Leucocrinum montanum Nutt. Sand-lily. 

 Fig. 1 24 1. 



L. montanum Nutt. ; A. Gray, Ann. Lyc. N. Y. 4 : 1 1 0. 1837. 



^ Root-fibers very thick, numerous. Inner leaves 

 2-10' long, 1 "-3" wide; flowers 3-8; pedicels ¥-2' 

 long; perianth-limb about Y broad, the lobes acute; 

 perianth-tube 1-2' long, less than 1" in diameter; 

 filaments $"-4" long ; anthers coiled at least when 

 dry; capsule $"-4" long, erect, leathery; seeds black. 



In sandy soil, South Dakota and Nebraska to Montana, 

 Oregon, Colorado and California. April-June. 



