38 BULLETIN 545, U. S. DEPARTMENT OF AGRICULTURE. 
Liliaceae Lily. 
Allium validum. 
Allium platyphyllum. 
Allium fibrillum. 
Melanthactae Bunchflower. 
Veratrum viride. 
Salicaceae Willow. 
Salix scouleriana. 
Polygonaceae Buckwheat. 
Polygonum phytolaccaefolium. 
Geraniaceae Geranium. 
Geranium viscosissimum. 
Onagraceae Evening primrose. 
Chamaenerion angustifolium. 
Apiaeeae Parsnip. 
Ligusticum oreganum. 
Polemoniaceae Phlox. 
Polemonium pulcherrimum. 
Vacciniaceae . Blueberry. 
Vaccinium membranaceum. 
Menthaceae Mint. 
Agastache urticifolia. 
Scrophulariaceae Beardtongue. 
Pentstemon procerus. 
Caprifoliaceae Honeysuckle. 
Sambucus melanocarpa. 
Sambucus glauca. 
Valerianaceae Valerian. 
Valeriana sitchensis. 
Cichoriaceae Chicory. 
Hier actum cynoglossoides . 
Agoseris glauca. 
Asteraceae Aster. 
Rudbeckia occidentalism 
Achillea lanulosa. 
Senecio triangularis. 
Senecio columbianus. 
Mountain Onion. 
(Allium validum.) 
Onions belong to the lily family. About 275 species have been 
described, and 40 or more are found in the western United States. 
Mountain onion, an account of its abundance, size, and the relish 
with which it is eaten, is one of the most valuable of these plants. 
It usually attains a height of 1 to 2 feet. The bulbs differ from those 
of other local species in being narrow and much elongated. They 
are provided with a rose-white, delicate covering. The rootstooks are 
unusually stout, and the plant makes a bunched growth, producing 
a heavy, dense rose-colored or nearly white flower cluster (Plate 
XXXV) . Mountain onion is restricted to the Hudsonian and timber- 
line regions. It belongs to the group of plants which require a moist 
or even wet soil throughout the year and occurs in wet meadows 
and springy places within the altitudinal limits of its range. The 
