mw G@ —?War. subcordata (Rydb.) Sargt. Similar in foliage and habit to var. 
OH 
. 2-5 cme long, commonly bearing 2-5 leaves; leaves 5-6 cm. long, (more in 
Fi aa eee . 7 ; 
ee ¢ 
cs ie, 
> 4 ayes 
prown; branchlets olivaceous, somewhat hairy, glandular, the dwarf branchlets <4 
shade forms) broadly ovate, te, r at t Ss rc ; 
irregularly doubly or singly serrate, glabrous and rather dull above, sparingly 
pubescent beneath, tmonghyctev0n. the shea} petioles 1-2 om. 
long, puberulent; staminate catkins pendulous, 5-8 cm. long; mature pistillate 
catkins 2~5 cme long, cylindrical or tapering at , On pe 0 icle. 
5-10 mm. long, the subtending leaf frequently reduced and toothed, the bracts * 
5 mm. long, ciliate on the margins and more or less puberulent, suggesting a ss 
fleur-de-lis in outline, the lateral lobes ascending; nutlet oval, 1.5 mm. long, | 
puberulent, the membranous wing on each side, sometines nearly twice as wide, te 
deeply obcordate. —>(Be occidentalis Hook). 
Typically developed principally in the valley floor north of Lake Pend 
Oreille ,,ccourring, in urns and open places. 
occidentalis, the bark tending to mahogany color, often resembling that of a 
cherry tree, smooth and shining, peeling and separating into layers with more 
difficulty; range of variation in fruit about the same as in var. occidentalis. 
The leaves are often thicker and more regular and are.f ntly lightly cor; 
date at the base.| Numerous individuals occur which may be referred equa 
ee AeONRTD OMEN " “subcordata - 
well to either variety. {——>(B. subcomata Rydb. J. 
ore - 
Occurring principally in the southern part of our region in the warmer 
valleys « 
tm 
——>var. montanensis (Butler) Sargt. >A stockier more widely branching 
tree when mature than var. occidentalis, the saplings suggesting Alnus at a 
distance. The mature bark is decidedly gray and much tougher than in var. 
occidentalis, such that it may be cut only with difficulty with a sharp knife, 
the blade glancing off. ‘The lenticels are prominent, their margins elevated. 
The bark separates into layers only with difficulty. In foliage and fruit 
characters there appears to be the same range of variation as in var. 
occidentalis. In the valley of the St. Joe iver, where this form is abundant, 
it appears sufficiently distinct to warrant specific segregation. ——————_—__7 
=| Be montanensis Butler). 
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