380 LILIACEAE 



Herbaceous plants, arising from bulbs or corms. 



Perianth-segments all similar, petaloid; capsule loculicidal. 

 Flowers in umbels terminating a scape. 



Plants alliaceous (with the odor and taste of onions). 1. Allium. 



Plants not alliaceous. 



Filaments separate, not united to form a corona. 



Perianth 6-parted to near the base, the tube scarcely evident; segments closely 2-3-nerved. 

 Filaments subulate or dilated, without appendages; pedicels not jointed; flowers 



greenish-white. 2. Muilla. 



Filaments surrounded at base by cup-shaped winged appendages; pedicels jointed; 

 flowers vellow. 3. Blooineria. 



Perianth-tube' evident; campanulate to tubular; segments 1-nerved. 

 Anthers versatile, 6. 



Perianth-segments rotate-spreading, the tube narrow; flowers yellow. 



4. Calliprora. 

 Perianth-segments little or not at all spreading. 



Perianth-tube open campanulate; flowers white. 5. Hesperoscordum. 



Perianth-tube funnel-form or tubular and more or less inflated; flowers blue. 



6. Triteleia. 

 Anthers basifixed, 3 except in Dichclostemma capitata. 



Capsule sessile; flowers blue or purple, rarely red. 



Perianth-tube funnel-form, not at all inflated, the segments widely spreading.' 



7. Hookera. 

 Perianth-tube tubular and more or less inflated, the segments erect or but little 



spreading. 8- Dichelostemma. 



Capsule stipitate; perianth-tube red, the lobes green. 9. Brevoortia. 



Filaments united to form a tubular corona, with ei-ect bifid segments between the anthers. 



10. Androstephium. 

 Flowers not umbellate, or if so, not terminating an evident scape. 



Perianth united below into a more or less evident tube. 



Plants acaulescent, from a short rootstock; flowers arising from subterranean pedicels. 



11. Leucocrinnm. 

 Plants caulescent from bulbs; flowers in simple or compound racemes. 



Perianth funnel-form; stems leafy. 12. Hesperocalhs. 



Perianth salver-form; leaves basal. _ 13. Odontostomum. 



Perianth-segments separate, not united below into a tube. 

 Bracts scarious; perianth persistent. 



Perianth scarious, not twisted over the fruit. 14. SchoenoUrion. 



Perianth not scarious, often twisted over the fruit. 



Flowers scattered in a widely branching panicle. 15. Laothoe. 



Flowers in a simple raceme terminating a scape. 16. Quamasia. 



Bracts, if any, foliaceous; perianth deciduous (except Lloydia). 



Plants from scaly bulbs, the scales appearing as bulblets in many species of Fritillaria. 

 Anthers versatile; perianth-segments oblanceclate with a linear nectariferous groove. 



17. Liiiiim. 

 Anthers fixed near the base, slightly or not at all versatile; nectary a shallow pit. 



18. Fritillaria. 

 Plants from tunicated bulbs; anthers strictly basifixed. 



Leaves 2, broad, basal or nearly so; flowers nodding. 19. Erythroniiim. 



Leaves several, grass-like; flowers not nodding. 20. Lloydia. 



Perianth-segments unlike, the inner petaloid, the outer smaller and often sepal-like; capsule septicidal. 



21. talochortus. 

 Plants with a woody caudex, arborescent or appearing acaulescent. 



Flowers large, perfect; perianth-segments many-nerved; ovules numerotas in each cell. 



Style stout; stigma 6-notched, openly perforate. 22. Yucca. 



Style filiform; stigma capitate, long-papillate, 23. Hesperoyucca. 



Flowers polvgamo-dioecious; perianth-segments 1 -nerved; ovules 2 or 3 in each cell. 



24. Nolina. 



I 



1. ALLIUM L. Sp. PI. 294. 1753. 



Scapes from a tunicated bulb or a coated corm, with mostly narrowly linear basal leaves. 

 Herbage with the characteristic odor and taste of onions. Flowers in a terminal simple 

 umbel, subtended by 2-4 membranous, separate or united bracts. Pedicels slender, not jointed. 

 Perianth persistent, its segments distinct or united at the base. Stamens inserted on the 

 bases of the perianth-segments ; filaments filiform or dilated, sometimes toothed. Style 

 filiform, jointed. Capsule obovate-globose, obtusely 3-lobed, often crested, loculicidally de- 

 hiscent. Seeds obovoid, wrinkled, black. [Latin for garlic] 



A 'genus of about 300 species, widely distributed; especially developed in California, where the majority 

 of the North American species are to be found. Type species. Allium ampeloprasum L. 



Leaves hollow, terete; pedicels much shorter than the flowers. 1. A. sibiricu7n. 



Leaves solid, flat or channelled, or when terete solitary. 



Bulbs with fibrous coats. 5. A geyeri. 



Bulbs with membranous coats. 



Bulbs oblong, cespitose, with a more or less developed rhizome, the coats without reticulations. 

 Stamens exserted. 



Umbels nodding; perianth-segments acutish. 2. A. cernuum. 



Umbels erect; perianth-segments long-acuminate. 3. A. validum. 



Stamens included. 4. A. haematochiton. 



Bulbs ovoid or subglobose, mostly solitary, not rhizomateous, the center usually solid and therefore a 

 coated corm. 

 Outer bulb-coats without distinct reticulations (with fine transversely oblong reticulations in 

 tribracteatuin. 



