RYDBERG: NOTES ON ROSACEAE 365 
the leaflets, especially the terminal ones, are rhombic-obovate and 
the plant scarcely at all viscid. D. laxiflora is more closely 
related to D. viscida Parish, but differs in the broader ovate or 
oval bractlets, the more elongated and slender branches of the 
inflorescence, and the simple-toothed leaflets. 
The following specimens belong to Drymocallis reflexa: 
CALIFORNIA: Little Green Valley, San Bernardino Mountains, 
1904, R. Hall 7; Nevada Falls, Yosemite Valley, 1902, Hall & 
Babcock 3430. 
For several years there have been in the herbaria of the New 
. York Botanical Garden, of Columbia University, and of the 
United States National Museum, several specimens resembling 
in many respects Drymocallis Wrangelliana and D. oregana, but 
with minute whitish petals. They could not be included in any 
of the previously described species. They resemble most closely 
D. viscida Parish, but the petals are white or whitish, not yellow, 
the plant is less viscid and the bractlets narrower. Besides, 
D. viscida was known only from southern California, and the 
specimens referred to come from Washington and British Colum- 
bia. In the North American Flora these specimens were de- 
scribed under the name D. albida. To it belongs the following 
material: 
WASHINGTON: Damp or shady places at Bingen, 1893, Suksdorf 
2209; Clallam County, June 1900, Elmer 2526. 
OREGON: Forest Grove, June 3, 1893, F. E. Lloyd. 
BritisH Co_umsia: Chilliwack Valley, July 10, 1901, J. M. 
Macoun 34412 and 34441. Skagit Valley, June 1905, J. M. 
Macoun 69939; Mt. Finlayson, Vancouver Island, June 3, 1887, 
John Macoun. 
While collecting in Utah in 1905, the writer discovered another 
species closely related to the preceding, but differing in the 
orbicular instead of obovate petals and in the shorter and broader 
sepals. It was described in the North American Flora under the 
name Drymocallis micropetala. The following specimens belong 
to it: 
Urau: City Creek Cafion, June 9 and 12, 1905, Rydberg 6153; 
same locality June 9, 1883, Leonard 105; Red Rock Cafion, June 
II, 1905, Rydberg 6074. 
