348 LILTACE^E. (LILY FAMILY.) 



2. Bulbs mostly solitary, globose to ovate, not rhizomatous: leaves narrowly 



linear, flat or channelled: scape terete or nearly so. 



* Bulb-coats more or less fibrous: leaves several. 



i Capsule not crested : spathe usually 3-valved. 



4. A. Canadense, Kalm. Bulb-coats somewhat fibrous : scape a foot or 

 more high : umbel mostly bulbiferous : flowers on slender pedicels (6 to 10 lines 

 long), white or pinkish; segments narrowly lanceolate, obtusish, equalling or some- 

 what exceeding the stamens. Along our eastern border and eastward to the 

 Atlantic States. 



5. A. mutabile, Michx. Like the last: bulbs densely and coarsely fibrous- 

 coated : scape a foot or two high : umbel rarely or never bulbiferous : flowers 

 white to rose-color ; segments thin and lax in fruit, ovate to narrowly lanceolate, 

 obtusish or acute, a third longer than the stamens. A. reticulatum, var. y, Watson, 

 Bot. King Exped. v. 486. From New Mexico and S. Colorado eastward to the 

 Atlantic States. 



6. A. Nuttallii, Watson. Bulb usually smaller, very fibrous : scape low 

 (4 to 6 inches high) : pedicels shorter (4 to 6 lines long) and usually stouter: 

 perianth-segments usually broader, acute or acuminate, rose-colored or white, 

 rather rigid in fruit. Proc. Am. Acad. xiv. 227. A. mutabile, var. ft, Watson. 

 From Kansas and Colorado southward. 



i- H- Capsule crested : spathe usually 2-valved. 



7. A. reticulatum, Fraser. Scape 3 to 8 inches high : pedicels usually 

 short (2 to 6 lines long) ; otherwise closely resembling A. mutabile. From 

 New Mexico and Colorado to the Saskatchewan. 



* # Bulb-coats not fibrous : some of the outer membranous coats in most species 

 marked by a peculiar reticulate venation: leaves several (2 to 4): spathe 

 2-valved. 



i- Ovary not crested or obscurely so : scapes low. 



8. A. Brandegei, Watson. Bulbs small, the reticulation of the coats hori- 

 zontally oblong : leaves 2, exceeding the angular scape : pedicels slender, equal, 

 about 4 lines long : flowers rose-colored ; the segments broadly lanceolate, acute, 

 nearly twice longer than the stamens, not serrulate. Proc. Am. Acad. xvii. 

 380. Elk Mountains, Colorado (Brandegee). 



9. A. acuminatum, Hook. Outer bulb-coats with a distinct coarse quad- 

 rate to hexagonal reticulation: pedicels & to 12 lines long: flowers deep rose- 

 color; segments lanceolate, with acuminate recurved tips, rigid in fruit, a third 

 longer than the stamens, the inner ones undulate-serrulate. From S. W. Colo- 

 rado to the Wahsatch and Uinta Mountains, N. California and Washington 

 Territory. 



- )- Ovary conspicuously ^-crested: perianth-segments not serrulate, mostly rose- 

 colored. 



10. A. Stellatum, Fraser. Outer bulb-coats reddish, with a very close 

 linear longitudinal reticulation : scape 6 to 18 inches high : pedicel 4 to 9 lines 

 long : perianth-segments broad, acute : stamens and style exserted. From Wyo- 

 ming to the Saskatchewan. 



11. A. bisceptrum, Watson. Bulbs light-colored ; reticulation indistinct : 

 scapes lower, frequently in pairs : perianth-segments oblong-lanceolate, acuminate, 



