1918] SCHN EIDER—SALIX It 
longi, iis formae typicae similes sed basi pl. m. subito attenuati, 
pedicellis satis tenuibus 2-3plo brevioribus glandulam siccam 
4-6plo superantibus suffulti. 
TYPE LocaLity.—Texas, Comal County, on the Guadalupe River (leg. 
Lindheimer, no. 415). 
RANGE.—Eastern and southeastern Texas (perhaps also in southern 
Oklahoma), from about 34° N. lat. and between roo and 95° W. long. south- 
ward into Mexico to southeastern Coahuila, Nuevo Leon, and to Tamaulipas 
(and probably also Hidalgo). 
SPECIMENS EXAMINED.—Texas: Comal County, New Braunfels, on the 
Guadalupe and other rivers, 1850, F. Lindheimer (no. 415, m., f., fr., type!; 
., M.; in the Gray herbarium named by ANDERSSON himself S. nigra var. 
angustifolia; it is the same as no. 1189 distributed by the Mo. Bot. Gard. as 
S. Humboldtiana).—Mexico: State of Tamaulipas: Matamoros, March 1836, 
J. J. Berlandier (no. 3026, fr.; sub nomine inedit. ‘“S. viridis”; G., M.); 
without exact locality (perhaps from Texas), J. J. Berlandier (no. 854, st.; M.; 
no, 887, fr.; G., M.; no. 2274, st.; G., M.; no. 2317, fr.; G., M.); vicinity of 
Victoria, alt. about 320 m., February 1—April 9, 1907, E. Palmer (no. 134, m 
M., W.).—State of Nuevo Leon: Monterey, May 1891, C. K. Dodge (m., fr.; W.; 
forma porro observanda); same locality, common, March 19-20, 1900, C. 5S. 
Sargent (m., f.; “large tree”); same locality, March 18-19, 1900, W. M. 
Canby (nos. 231, f., 232, m.; G., W.); same locality, March 18, 1900, W. Tre- 
lease (no. 131, f.; M.).—State of Coahuila:7 Ciudad Porfirio Diaz, April 8, 
1900, W. Trelease (no. 133; M.; fructibus juvenilibus ad S. Humboldtianam 
spectans); Saltillo, April 15-30, 1898, E. Palmer (no. 27, m.; “tree of 30 ft. 
or more high, rather rough bark, not seen over 1 ft. in diam., about watercourses 
and cultivated places, indicating artificial sera mts. 6 miles east of 
Saltillo, April 1888, EZ. Palmer (no. 1286, m.; G., W.); Pueblo near Saltillo, 
March 18, 1847, J. Gregg (no. 296, m.; M.); San see or “Green Spring,” 
April 8, 1847, J. Gregg (no. 479, m., ae M.). 
This willow, which has hitherto ‘ieee regarded either as S. nigra or S. Hum- 
boldtiana, seems to me to represent the most southern form of S. nigra. It is 
not always easy to separate it from typical migra from northern Texas, but 
the leaves are usually narrower or at least more attenuated at the base, with a 
comparatively much longer petiole. The young branchlets and the petioles 
are glabrous or become so very soon, while those of S. nigra and its southeastern 
var. altissima Sarg. are, for some time at least, more or less distinctly puberulous 
or villose. Moreover, the stipules of var. Lindheimerii bear always some 
7 There is a specimen neo by C. G. PrincLe, Jimulco, by streams, alt. 
1300 m., October 10, 1905 (no. 100863, fr.; G.; “a medium sized tree”), bearing only 
short denis aments (1-2.5:1 cm. ae with small, linear-lanceolate, almost entire leaves 
(about 2-3:0. a 5 cm. Jo on the short peduncles which, I believe, has to be referred to 
var. Lindheimer 
