502 RYDBERG: NOTES ON ROSACEAE 
Cercocarpus breviflorus A. Gray. This has nearly the same 
range as the preceding, but is more eastern, being found also in 
western Texas and Coahuila. It is, however, lacking in Sonora 
and western Arizona. 
Cercocarpus ledifolius Nutt. is the most widely distributed 
species of the genus. Its characters are rather constant. It 
varies, however, in the width of the leaves and in the margin 
being more or less revolute. Cercocarpus ledifolius intercedens 
subglabra C. K. Schneider is either an extremely narrow-leaved 
form or else a hybrid with C. intricatus. 
Cercocarpus hypoleucus Rydb. This has been mistaken for 
both C. ledifelius and C. intricatus, but the villous pubescence of 
the lower surface of the leaves should exclude it from either, 
though it may cause some confusion with C. arizonicus. It has 
. smaller, narrower leaves with sharper petioles than C. ledifolius, 
but larger leaves, less enrolled, and larger fruit than C. intricatis 
and C. arizonicus. The following specimens are referred here: 
Montana: Melrose, 1895, Rydberg 2695; Shear 3216; Red 
Rock, Shear 3349; Helena, 1908, Butler 713, 774; Tobacco Moun- 
tain, Butler 4236; Montana, Kelsey; Lombard, 1900, Blankinship. 
Wyominc: Wolf Creek Canyon, A. Nelson 2292; between 
Sheridan and Buffalo, 1900, Tweedy 3236; Big Horn, 1899, Tweedy 
2540; Powder River, 1901, Goodding 252; 1893, Evermann; Big 
Horn Basin, 1893, V. Bailey; Tongue River, 1898, Tweedy 39. 
IpaHo: Salmon River, Henderson 3143 and 3790; V. Bailey 49- 
Uran: Raft River, S. Watson 313 in part. 
OrEGON: Snake River, 1897, Sheldon 8201. 
Cercocarpus intricatus S. Wats. M. E. Jones reduced this to 
a variety of C. ledifolius, claiming that they grade into each other; 
and still he proposed a new species C. arizonicus, which is much 
closer to C. intricatus than C. ledifolius is. I have seen the speci- 
mens from Willow Spring, Arizona, on which C. arizonicus was 
based and these are identical with Jones’s own specimens from 
Deep Creek, determined by Jones as C. ledifolius intricatus. It 
is evident that Jones did not distinguish these species very well. 
Some of Jones’s specimens are evidently hybrids. See below. 
The range of C. intricatus includes parts of Utah, Arizona and 
Nevada. A specimen from California, but with much shorter 
Shah RS ee 
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