allium LILIACEtE 639 



+■ +- Stem simple, low, from a small tunicated bulb : leaves linear, 

 without veinleta : anthers attached by the base : seeds flat. 



10 Lloydia Stem sparingly leafy, bearing a solitary flower with spread- 

 ing persistent 3-nerved equal segments. 



+--*--*- Stem low, 2-leaved, from an oblong corm : anthers attach- 

 ed by the base: seeds turgid. 



11 Erythremia in Leaves broad: perianth-segments oblanceolate, callous- 

 toothed each side of the grooved nectary. 



* * Outer segments of the perianth smaller, somewhat sepal-like ; 

 the inner broad and usually bearded : stigmas sessile. 



12 Calochortus Stem usuallv lax or flexuous, from a coated corm : 

 anthers attached by the base: capsule usually septicidal. 



1 ALLIUM L. Sp. 294, 



Perennial herbs mostly with tunicated bulbs, a peculiar odor, 

 lanceolate or linear leaves and rather small flowers in a terminal 

 simple umbel. Perianth of (3 nearly equal distinct lanceolate to 

 linear more or less spreading 1-nerved segments that are often 

 gibbous at base, and subtended by 2 or 3 membranous separate 

 or united bracts. Pedicels not jointed. Stamens 6 inserted on 

 the base of the segments :filaments filiform: anthers mostly ovate- 

 oblong, versatile. Ovary sessile, subglobose, deeply 3-lobed 

 with a very short axis: ovules mostly 2, 1 -several, at the base of 

 each cell, ascending: style filiform, jointed on the axis: stigmas 

 small. Capsule obtusely 3-lobed, loculicidally dehiscent. Seeds 

 obovoid and wrinkled, with thin black testa. 



§ I Bulbs cespitose, narrowly oblong and crowning a more 

 or less persistent rhizome, coats membranaceous without peculiar 

 reticulation: spathes mostly 2-valved: scapes terete. 



* Leaves terete and hollow. 



A. Schoeiioprasum L. Sp. 301. Scapes stout, 1-2 feet high, from ob 

 long bulbs: umbel subcapitate, densely many-flowered, erect: spathe 2-val 

 ved, its bracts broadly ovate : pedicels 1-3 lines long : flowers, rose-color, 

 longer than the pedicels : segments of the perianth 4-6 lines long, lanceolate, 

 acuminate : stamens included : filaments subulate : ovules 2 in each cell : 

 capsule obtusely 3-lobed, about half as long as the perianth, not crested. 

 Along rivers in moist or wet soil from the Columbia river to Alaska and the 

 Great Lakes : also in Europe and Asia. 



* * Leaves flat or channeled. 



A. cernuum Roth. Ecem. Arch, i, part 3, 40. Bulbs usually clustered 

 on a short rootstock, narrowly ovoid, with a long neck, 1-2 inches long: 

 scapes slender, slightly rigid, 6-20 inches high; leaves linear, channeled, 

 or nearly flat, 1-4 lines broad, often equalling the scape: umbel loosely many- 

 flowered, nodding: spathe 2-valved, the bracts lanceolate or shorter, decid- 

 uous: pedicels filiform, 8-15 lines long: flowers rose color to white, the 

 segments 2-3 lines long, broad and acutish : stamens and style exserted : 

 filaments filiform ; ovules 2 in each cell : capsule 3-lobed shorter than the 

 perianth, with 2 crests on the summit of each valve. On rocky banks and 

 bluffs along streams, Oregon to Brit. Columbia and the Alleghany Alts. 



A. valirtum Watson Bot. King 350. Scapes very stout, 1-2^ feet 



