64 BULLETIN 179, U. S. DEPARTMENT OF AGRICULTURE. 
tions due to differences in the conditions under which it is found in its 
wide range. ; 
So far as known, the species has not been utilized in horticulture. 
Prunus EmMarGimnata Vittosa Sudworth. 
Cerasus mollis Dougl., 1834, in Hook. Fl. Bor. Amer., v.1, p. 169. > 
Prunus mollis Walp., 1843, Report Bot., t. 2, p.9. (Not P. mollis Torr., 1824.) 
Cerasus erecta Presl., 1849, Epim. Bot., p. 194. 
Prunus erecta Walp., Ann. 3: 854, 1852-53. 
Cerasus pattoniana Carr., 1872, in Rev. Hort., Ann. 44, p. 135, fig. 17. 
Prunus emarginata mollis Brewer, 1876, in Brewer and Wats. Bot. Calif., v. 1, p. 
167. 
Prunus emarginata villosa Sudw., 1897, U. S. Dept. Agr., Div. Forestry Bul. 14, 
p. 240. 
Leaves obovate to oval, 2 to 7 cm. long, or on vegetative shoots 
sometimes even 10 cm. long, 2 to 3 em. broad, narrowed or cuneate 
at the base, obtuse or sometimes emarginate at the apex, more or less 
pubescent, at least on the lower surface. Flowers as in the species, 
except for the rather strongly pubescent pedicels and calyx tube, and 
the petals also more conspicuously pubescent. Fruit similar to the 
species. 
The tree is 30 to 40 feet high with well-defined, straight trunk 
in the most favorable situations, the young twigs rather strongly 
pubescent. 
This form is known to occur from the southern coast of Vancouver 
Island and southern British Columbia west of the mountains south- 
ward to southern Oregon. In the southern part of its range it occurs 
at an altitude of 4,000 feet, while in the north it is found only at low 
altitudes. 
It was originally described from ‘‘near the mouth of the Columbia, 
and on subalpine hills, near the source of that river, Douglas; Fort 
Vancouver, Dr. Scouler.” The specimens from near the source of the 
Columbia probably belong to the species. Cerasus erecta was 
described from Nootka Sound and from the description is plainly this 
form. Cerasus pattonana was sent to the Muséum d’Histoire 
Naturelle, Paris, about 1865, by M. MacNab and is supposed to have 
come from northwest America, the exact locality bemg unknown; 
from the description and figure it is also this form. While Prunus — 
emarginaia villosa is quite unlike the species in habit and general 
appearance, it undoubtedly merges gradually with the species. More 
or less pubescent forms occur at various localities in California and in 
Arizona, but they are apparently of the smaller leaved, shrubby plant 
and are therefore referable to the species rather than to the subspecies. 
This form has apparently not been utilized in pomology, but is 
sometimes planted as a shade tree and has been so used in Portland, © 
Oreg. 
