160 ALLIACEAE 



6-8 mm. long; capsule with 6 rather prominent crests. A. reticulatum deserticola 

 M. E. Jones. A. deserticola Woot. & Standi. A. diclijotum Greene. Plains and 

 valleys: Wash.— Ariz.— N.M. — S.D.— Mont. Plain— Mont. My-S. 



15. A. Pikeanum Rydb. Bulb obliquely ovoid, about 1.5 cm. long and 

 8-10 mm. thick; scape 8-15 cm. long, almost equalled by the narrowly linear 

 leaves; bracts 8-10 mm. long; petals and sepals subequal, ovate, acuminate, 

 red-purple; capsule slightly crested above. Mountains: Pike's Peak and vicin- 

 ity, Colo. Subalp. — -Alp. Jl-Au. 



16. A. acuminatum Hook. Bulbs solitary, nearly spherical, 1-1.5 cm. 

 thick; outer coat rather thick, pitted, the 4-6-angled reticulations being very 

 thick and raised; scapes 1-3 dm. high; bracts 2, 1-1.5 cm. long; flowers 12-30; 

 sepals dark rose or reddish purple, ovate-lanceolate, keeled on the back and gib- 

 bous at the base, 8-12 mm. long; petals similar but slightly shorter. Rich soil, 

 prairies and rocky hillsides: B.C. — Calif. — Ariz. — Colo. — Mont. Submont. 

 My-Jl. 



17. A. cuspidatum (Fern.) Rydb. Bulb solitary, nearly globose, 1.5-2 cm. 

 thick; outer coat thick; reticulations similar to those of the preceding, but less 

 prominent; scape 2-3 dm. high, slender; leaf -blades less than 1 dm. long, 2 mm. 

 wide or less; sepals and petals more oblong and abruptly acuminate than in the 

 preceding. A. acuminatum cuspidatum Fern. Rocky hillsides: e Wash. — w Ida. 

 Submont. Ap-Jl. 



18. A. simillimum Henderson. Bulbs ovate, nearly 1 cm. thick; reticula- 

 tions of the coat rectangular-hexagonal; scape 2.5-3 cm. high, flattened and 

 winged; leaf -blades 2, 8-9 cm. long, 1 mm. wide, falcate; bracts 2; flowers 6-9; 

 sepals and petals narrowly oblong, pinkish white, with a strong green midvein; 

 ovary slightly 3-crested. Open loose soil among rocks: Ida. Mont. Jl. 



19. A. scillioides Dougl. Bulb globose, about 1 cm. thick, dark purplish 

 brown; coat thin; reticulations fine and rectangular or square; scape about 2 

 dm. high; bracts 2, lanceolate, acuminate, fully 1 cm. long; leaves 1 or 2, about 

 15 cm. long, 2 mm. wide; sepals and petals ovate, about 7 mm. long; the former 

 saccate at base; capsule slightly 3-ridged at the apex. Dry gromids: B.C. — Ida. 

 — Ore. Submont. Je-Au. 



20. A. incisum Nels. & Macb. Bulb 1-1.5 cm. thick; outer coat brown or 

 l^inkish, obscurely reticulate; scape 5-8 cm. high, 1.5-2.5 mm. broad, narrowly 

 winged; leaves 3-5 mm. wide, slightly falcate, exceeding the scape; bracts 2- 

 several or the bracts cleft to the base; flowers many; pedicels 1-2 cm. long; 

 petals and sepals white, narrowly lanceolate, acute; capsule very obscurely 

 crested. Barren clayey ground: Ida. Je. 



21. A. fibrillum M. E. Jones. Bulb nearly spherical, 1-1.5 cm. thick; 

 leaves 2 or 3, 1-1.5 dm. long, 2-4 mm. wide; bracts 2, ovate, fully 1 cm. long; 

 sepals ovate, acute, 6-8 mm. long; petals narrower, lanceolate; capsule slightly 

 ridged. A. collinum Dougl., not Guss. Mountains: Wash. — Ore. — Ida. — w 

 Mont. Plain — Mont. Je-Au. 



22. A. tribracteatum Torr. Bulb ovoid or nearly globose, about 1 cm. 

 thick; reticulations transversely rectangular; scape 3-5 cm. high, surpassed by 

 the leaves; leaf -blades usually 2, 4-10 cm. long, 2-6 mm. wide; sepals and petals 

 oblong, acutish, with a purple midrib; capsule not crested. Mountains: Ore. — ■ 

 Calif.— Utah— (? Colo.) Son. Ap. 



23. A. Diehlii M. E. Jones. Bulb nearly globose; outer coat dark red; 

 reticulations rectangular to linear-rectangular; scapes 5-7 cm. high; leaves 2; 

 blades 1-1.5 dm. long and about 4 mm. wide; bracts about 12 mm. long; sepals 

 ovate-lanceolate, acuminate; petals narrower; capsule spongy- and sulcate- 

 crested, the crests not evident in fruit. A. tribracteatum Diehlii M. E. Jones. 

 Mountains: Utah. Mont. My. 



24. A. minimum M. E. Jones. Bulb small, ovate, about 8 mm. thick; 

 outer coat very thin and membranous, the inner red; reticulations irregularly 

 rectangular; scapes 7-10 cm. high; leaves 2; bracts 6 mm. long; flowers about 

 10; sepals and petals ovate, barely acute, 4 mm. long, white, with green ribs 



