146 
SILVA OF NORTH AMERICA. 
SALICACE. 
Saliz Piperi, which is one of the rarest and least well known of American Willows, is, with its 
large white silky precocious staminate aments, its bright branches, and its large brilliantly colored leaves, 
one of the most distinct and beautiful among them.’ 
1 Three plants of Salix Pipert are known in the vicinity of Seat- 
tle. One of them, growing on the gravelly beach at Lake Wash- 
ington with Salix cordata, Salix Sitchensis, and Salix Nuttallii, var. 
brachystachys, is the only pistillate plant of the species that has yet 
been discovered, and is a shrub with stems not more than three or 
four feet tall. About three miles distant from it are two staminate 
plants, one growing in a swamp near Lake Union, and the other in 
a sphagnum covered bog on high ground in the same neighborhood. 
A third staminate plant has been found by Professor Piper several 
miles south of Seattle on the margin of a creek near Yalm Prairie 
in Thurston County, and a fourth about ten miles south of the same 
city. Although Saliz Piperi is not known at present except in a 
shrubby form, it is admitted into The Silva, in which only the arbo- 
rescent species are described, because many Willows are both 
shrubby and arborescent in habit, and therefore it is not impossible 
that arborescent individuals of this species may yet be found. 
EXPLANATION OF THE PLATE. 
Piate CCCCLXXXIV. Sarrx Prreri. 
. A capsule, enlarged. 
NO oP WD 
. A flowering branch of the staminate tree, natural size. 
. A staminate flower with its scale, front view, enlarged. 
. A staminate flower with its scale, front view, enlarged. 
. A branch of the pistillate tree, natural size. 
. A pistillate flower with its scale, front view, enlarged. 
. A summer branch, natural size. 
