SALICACER. 129 
SILVA OF NORTH AMERICA. 
SALIX TAXIFOLIA. 
Willow. 
LEavEs linear-lanceolate, pale gray-green and puberulous. 
Salix microphylla, Schlechtendal & Chamisso, Linnea, vi. 
354 (1831). — Hooker & Arnott, Bot. Voy. Beechey, 310, 
t. 70. 
Salix taxifolia, var. a sericocarpa, Andersson, Svensk. 
Vetensk. Akad. Handl. ser. 4, vi. 57 (Monographia Salz- 
cum) (1867); De Candolle Prodr..xvi. pt. ii. 215. 
Salix taxifolia, var. B leiocarpa, Andersson, Svensk. 
Vetensk. Akad. Handl. ser. 4, vi. 215 (Monographia 
Salicum) (1867); De Candolle Prodr. xvi. pt. ii. 215. 
Salix taxifolia, Humboldt, Bonpland & Kunth, Nov. Gen. 
et Spec. ii. 22 (1817).— Kunth, Syn. Pl. Hauin. i. 
364. — Dietrich, Syn. v. 421. — Andersson, Ofvers. 
Vetensk. Akad. Férhandl. xv. 117 (Bidr. Nordam. 
Pilarter) ; Proc. Am. Acad. iv. 56; Svensk. Vetensk. 
Akad. Handl. ser. 4, vi. 57 (Monographia Salicum) ; 
De Candolle Prodr. xvi. pt. ii. 215. — Coulter, Contrid. 
U. S. Nat. Herb. ii. 419 (Man. Pl. W. Texas). — Bebb, 
Garden and Forest, viii. 372. 
In Arizona a tree often forty or fifty feet in height, with a trunk eighteen inches in diameter, a 
The bark of 
the trunk is from three quarters of an inch to an inch in thickness, light gray-brown, and divided by 
The branchlets are 
slender, clothed with hoary tomentum which does not disappear until the end of their first season, when 
broad open head, and lower branches long, drooping, and slender at the extremities. 
deep fissures into broad flat ridges covered with minute closely appressed scales. 
they become light reddish or purplish brown and much roughened by the elevated persistent leaf-scars. 
The buds are ovate, acute, dark chestnut-brown, puberulous, about a sixteenth of an inch in length and 
nearly as broad as long. The leaves are involute in the bud, subdistichous, linear-lanceolate, narrowed 
at both ends, acute, slightly falcate and mucronate at the apex, and entire or rarely obscurely dentate 
above the middle with occasional minute teeth; when they unfold they are coated with long slender 
white soft hairs which gradually disappear, and at maturity they are pale gray-green, slightly puberulous 
on both surfaces, from one third of an inch to an inch and one third long, and from one twelfth to one 
eighth of an inch wide, with slender midribs, thin arcuate veins, thickened and slightly revolute margins, 
and stout puberulous petioles rarely one twelfth of an inch in length. The stipules are ovate, acute, 
scarious, minute, and caducous. The aments, which are oblong-cylindrical or subglobose, densely flow- 
ered, and from one quarter to one half of an inch long, are terminal, or terminal and axillary on the 
staminate plant, and borne on short leafy branches, and in Arizona expand in May, the lateral aments 
developing later than the terminal ; their scales are oblong or obovate, rounded or acute and sometimes 
apiculate at the apex, coated more or less densely on the outer surface with hoary tomentum, and 
pubescent or glabrous on the inner. The stamens are two in number, with free filaments hairy below 
the middle. 
by the nearly sessile deeply emarginate stigmas. 
The ovary is ovate-conical, villous with pale hairs, short-stalked or subsessile, and crowned 
The capsule is cylindrical, long-pointed, bright red- 
brown, more or less villous, short-stalked, and about a quarter of an inch in length. 
In the United States Salix taxtfolia was first collected in 1849 by Mr. Charles Wright near 
El Paso, Texas.’ It was discovered in May, 1883, by Mr. C. G. Pringle’ in the neighborhood of 
1 No. 669. college before graduation and to assume the care of the farm, upon 
2 Cyrus Guernsey Pringle was born on the 6th of May, 1838, on 
a farm in Charlotte, Vermont, near the shore of Lake Cham- 
plain. His father was of sturdy Scotch stock and his mother of 
Puritan descent. The necessity of aiding his mother and younger 
brothers after the early death of his father compelled him to leave 
which for many years he practiced horticulture with conspicuous 
success, and, with other flowers and fruits, cultivated a collection 
of Lilies which has probably never been equaled in the United 
States. From 1868 to 1878 Mr. Pringle devoted himself princi- 
pally to the study and practice of the hybridization of plants, in 
