66 BOTANICAL GAZETTE [JULY 
leaves ovate, obovate, or broadly elliptic, rather small, not more than 
3-4°™ long even at maturity, incisely small-toothed from the middle 
to the obtuse or rounded apex, on petioles usually less than half as 
long as the blade: racemes short and dense: calyx-lobes subulate- 
triangular, lanate-pubescent on the margins and inner face, the 
pubescence persisting nearly or quite till maturity: petals spatulately 
oblanceolate, short (about 8™™): pome globose, purplish black, devel- 
oping but little pulp, and remaining rather dry and insipid, maturing 
late (September ?). 
This is a segregate from A. alnifolia Nutt. I think most collectors must 
have felt that either A. alnifolia was unusually variable or that some segregation 
ought to be made. After many years’ observation in the field and the study of a 
large series of specimens, I am satisfied that two valid species exist and can be 
readily distinguished. Nuttall’s A. alnifolia is the widely distributed glabrous 
shrub of the creek banks, moist cafions, and snow slopes. At maturity it is 
perfectly glabrous and is quite glabrous from the beginning upon the calyx lobes. 
The leaves are larger, coarsely serrate, often suborbicular or with a tendency to 
truncateness at base and apex. The petals are much larger (12-15™™ long). 
The fruits become much larger, are purple, with bloom, juicy and well flavored, 
are used extensively for sauce and pies, maturing during July or August according 
to the altitude. 
A. oreophila is a smaller shrub, scraggy-branched, usually in dense clumps, 
and occurring in the driest situations (open stony slopes, ridges, and hilltops). 
It 1s never wholly glabrous, and the fruit is of little if any value. Many other 
differences are brought out in the characterization. Much of the material dis- 
tributed from the Rocky Mountains belongs to this species. I may cite the 
following as at hand. 
ipa: Sta Serre nee mo = Co., July 6, 1903; 
ba Me Mii woe OE Ma ee 
een a ¢ ’ » A. AK. zie, 240, Breckenridge, Aug. 1991; ; 
€T, 55> 139) and 380, Plants of West Central Colorado, 1901. Wy0o- — 
oqiaes — 2954, apes May, 1897; 117, 6968, and 6985, Albany i. 
Point of Rocks. June he a Th 2 he my ile Merrell and Wilcox, 458 4 
will probebly cf ae - = : e following are allied, but when better known « 
eee al es ae ee two other species: Baker’s Plants of Nevada, 
“e ? 7 N+ summers, specimens from Yamhill, Co., Oregon, _ 
» 1903. 
a n. Lee low shrub or more rarely a small 
eG Used y as ‘Sapa individuals rather than in clumps: 
ee RC gs rather slender and willow-like, gray except at — 
P: cf are purplish-black with an inconspicuous beady resin! — 
