RYDBERG: NOTES ON ROSACEAE 501 
locality, Plummer; Winsor’s Ranch, 1908, Standley 4104; Ratan 
Mountains, 1903, Griffiths 5407; White Mountains, 1907, Wooton 
& Standley 3606; Sacramento Mountains, 1899, Wooton; Las 
Vegas, 1891, Dewey; Folsom, 1903, A. Howell r71. 
CoLorapo: North Cheyenne Canyon, 1894, E. A. Bessey. 
Cercocarpus paucidentatus (S. Wats.) Britton. This species 
was based on Cercocarpus parvifolius paucidentatus S. Wats. In 
order to determine the type of the species, we must find the type 
of the variety. The latter was based on Shaffner 114, Parry & 
Palmer 224* from San Louis Potosi, and Wright 1056 from Texas 
or eastern New Mexico. The first, Shaffner 114, must be regarded 
as the type, but Parry & Palmer 225 is the same. Upon this very 
number C. K. Schneider based his C. Treleasii, which therefore 
becomes a synonym. Wright 1056 belongs to another species, 
the same as Wilcox’s specimen from which Britton mainly drew 
his description of C. paucidentatus. This was without a specific 
name, and I adopted Schneider’s varietal name for it.. The fol- 
lowing specimens belong to C. paucidentatus (S. Wats.) Britton 
or C. Treleasii C. K. Schneider. 
San Louis Porost: Shaffner 114, 476, 635; Parry & Palmer 
225. 
Hipauco: Ixmiguelpan, 1905, Purpus 1383. 
Cercocarpus eximius (C. K. Schneider) Rydb. This is C. 
paucidentatus Britton, mainly as to the description, but not the 
type. Sargent regarded it as the same as C. brevifolius A. Gray. 
Schneider first admitted it as a variety eximius, but afterwards 
adopted Sargent’s views. He, however, did not have a clear 
conception of the same, for Rusby 125 and other specimens with 
better developed and more toothed leaves, he referred doubtfully 
to C. betulaefolius. Leaves toothed above the middle are not 
uncommon and sometimes found together with perfectly entire- 
margined leaves on the same bush. It is to be admitted that. it 
is closely related to C. breviflorus, but differs in the spreading 
pubescence and the longer hypanthium. It is also much more 
Common than C. brevifolius and its range extends through New 
Afexico, Arizona, Chihuahua and Sonora. 
of Rubus and also cited by Watson under Rubus trivialis. It is now known as 
R. oligospermus Thornber. 
