1918] SCHNEIDER—SALIX 23 
9. S. TAXIFOLIA Kunth in Humb. and Bonpl., Nov. Gen. PI. 
2:18. 1817; Syn. Pl. Aequinoct. 1:364. 1822; And. in Ofv.,1.c. 117, 
excl. var. microphylla; in Proc., 1. c. 56(11); in Walp., l. c. 746; in 
K. Sv., 1. c. 57, pro parte; in DC., 1. c. 215, pro parte; Hemsl. in 
Biol. Centr. Am. Bot. 3: 180. 1883; Brandegee in Zoe 4:406. 1894; 
Rowlee in Bull., 1. c. 249, pl. 9, fig. 2; Jones, Willow Fam. Gr. Plat. 
25. 1908; Goldman in Contrib. U.S. Nat. Herb. 16:321. 1916. 
"2S. tawifolia, b lejocarpa And. in K. Sv., 1. c. 57; in DC., 1. c. 215; 
°S. taxifolia a sericocarpa And., 1. c. 57; ?S. taxifolia a sericocoma 
And. in DC., 1. c. 21s. 
TYPE Locatiry.—‘Colitur in Hortis Mexici, Queretari, Zelayae, alt. goo— 
1200 hex.” ; 
RaNncE.—From Mexico I have seen wild specimens only from the state of 
Durango and Chihuahua, and also from Lower California. It is also found 
in southeastern Arizona, southern New Mexico, and southwestern Texas. 
SPECIMENS EXAMINED.—Mexico: State of Durango, vicinity of the city of 
Durango, August 1896, E. Palmer (no. 473, m.; the specimen in the Gray 
Herbarium consists of two forms, the leaves of the left one being rather short 
and broad).—State of Chihuahua, valley near Chihuahua, October 5, 1885, 
C. G. Pringle (no. 233, m., f., fr.); same place, April 6, 1886, C. G. Pringle 
(no. 864, m.; W.); near Balleza, September 23, 1898, E. H. Goldman (m.; G.); 
Cajou Creek, near the U.S. Boundary line, July 2, 1892, E. A. Mearns (no. 398, 
st.; N., W.); San Pedro River, October 12, 1892, E. A. Mearns (no. 1111, m.; 
N.).—Lower California, Santa Anita (Cape Region), March 1901, C. A. Purpus 
(no. 232, m.; W.; forma satis latifolia); from San Bernardo to El Sauz, Sierra 
La Laguna, January 21, 1906, E. W. Nelson and E. A. Goldman (no. 7434, m.; 
W.); Corral Piedra, September 9, 1893, J. G. Brandegee (f.; W.).—Without 
exact locality, 1846, T. Hartweg (no. 391, m.; ex Herb. Hooker in Herb. N.). 
__ Ihave not yet seen a type specimen of the typical S. taxifolia of which 
Humporpr and BonpLanp apparently collected only specimens of cultivated 
plants. All the specimens before me from central and southern Mexico belong 
to var. microphylla. The typical form seems to be restricted to the central and 
western part of northern Mexico, where it occurs probably, also in Sonora, 
and to the parts of the southern central United States mentioned. 
There are the following specimens from Chihuahua which come very near 
typical S. taxifolia, but in some respects resemble S. exigua (var. stenophylla). 
They may be regarded as belonging to a separate form of S. taxifolia also 
represented in the United States which I am not yet able to interpret correctly. _ 
hope I can deal with it finally in my future book. Bachimba Canyon, 
March 23, 1885, C. G. Pringle (no. 95; {.; G.); vicinity of Chihuahua, alt. 
about 1300 m., April 8-27, 1908, E. Palmer (no. 39, m.; G.,M., W.). Another 
