500 RyDBERG: NOTES ON ROSACEAE 
Cercocarpus alnifolius Rydb. This is the same as C. 
betulaefolius Blancheae of C. K. Schneider, mainly; although that 
author had included some specimens of C. Douglasii mixed in with 
the type. As a species had already been named after Mrs. 
Blanche Trask, viz. C. Traskiae, it would be bad taste to propose 
another one. Besides personally I dislike the use of the given 
name of a person as forming the specific name. I, therefore, 
adopted the more appropriate C. alnifolius instead of the varietal 
name Blancheae. This species is also endemic to Santa Catalina 
Island, California. 
Cercocarpus betuloides Nutt. Hooker in his Icones changed the 
name to C. betulaefolius, which form has been more commonly 
adopted than the original. It has also been regarded as a variety 
of C. parvifolius Nutt., i. e. of C. montanus Raf., but is evidently 
distinct. 
Cercocarpus minutiflorus Abrams. Nothing further has been 
added to the knowledge of this species since its publication. 
Cercocarpus flabellifolius Rydb. In Utah and northwestern 
New Mexico is found a mountain mahogany, having the pubes- 
cence of the Californian C. betuloides and the coarse toothing of 
the leaves of C. montanus. It has obovate leaves as the latter, 
but much broader and with more flaring teeth. This character 
is best seen in the type collected by L. F. Ward. The following 
specimens are to be referred here: 
Uran: Glenwood, 1875, Ward 122; western slope of La Sal 
Mountains, 1911, Rydberg & Garrett 8566; south side of Abajo 
Mountains, 9275; Juab, 1902, Goodding 1073; Silver Reef, 1894, 
Jones 5163, 5163b; Laccolite, Jones 5663, 5204e; Marysvale, 
Jones 5405d; Cedar City, Jones 5208, 5404d; Salina Canyon, 
Jones 5441m; Fish Creek Canyon, 1909, Garrett 2523. 
NEw Mexico: Aztec, 1899, Baker 384. 
Cercocarpus argenteus Rydb. This is related to C. montanus, 
but the pubescence is appressed-silky, the leaves narrower, toothed 
above the middle with smaller teeth. The following specimens 
belong here: 
Texas: Randall County, Eggers; Llano Estacado, Bigelow 
(Whipple Exp.); Guadalupe Mountains, 1901, Bailey 436. 
EW Mexico: El Capitan Mountains, 1900, Earle 209; same 
