14 BOTANICAL GAZETTE [JANUARY 
In my opinion, S. amygdaloides And. is the only American willow 
which belongs to this section. It seems to be more closely related 
to the European-Asiatic S. amygdalina L. than to S. nigra with 
which it is usually associated in the same section by authors. 
S. AMYGDALOIDES, var. Wrightii Schn., comb. nov.— 
S. Wrightit And. in Oefvers. K. Vet.-Akad. Forh. 15:115 (Bidr. 
Kanned. Nordam. Pilart.). 1858; in Proc. Amer. Acad. 4:55 (Sal. 
Bor.-Am. 9). 1858; in Walp., Ann. Bot. 5:745. 1858; S. migra 
***S. Wrightit And. in K. Sv. Vet.-Handl. 6:22. 1867; S. nigra 
b. latifolia y brevifolia testacea And., 1. c. 21; S. nigra § Wrightit 
And. in DC. Prodr. 167: 201. 1868; Hemsl. in Biol. Centr. Am. Bot: 
3:180. 1883, quoad Wright 1877°; Bebb in Bot. Gaz. 16:102. 
1891; S. lestacea And., in Prodr. |. c., pro synon. S. nigrae formae 3. 
TYPE LOCALITY.—Western Texas, El Paso County, or, according to 
Wooron and STANDLEY, Mexico, state of Chihuahua, on the Upper Rio Grande 
or from Lake Santa Maria (coll. C. Wright no. 1877). 
RANGE.—Western Texas near the border of genet vias probably adjacent 
Mexico, northern New Mexico (and ? southern Colorado). 
SPECIMENS EXAMINED.—Besides C. Wright’s nos. oe and 1877, which may 
have been collected in Chihuahua in the places mentioned above, I have not 
seen any specimen from Mexico. 
Judging by the material before me, S. Wrightii seems to be hardly more 
than a variety of S. amygdaloides, from which it differs chiefly in its more dis- 
tinctly yellowish branchlets, its more lanceolate and more gradually acuminate 
leaves which always possess numerous stomata in the upper epidermis. It 
is certainly not a ‘‘mere forma monstrosa”’ as BEBB suggested in Gard. and 
For. 8:363. 1895; and as is stated even by BALt in Coult. and Nels., New Man. 
Rocky Mt. Bot. 129. 1909, who, however, regards it now as a good species. 
The type specimen, Wright no. 1877, shows short, dense, and indeed not quite 
normal fruiting aments, which when well developed measure up to to cm. in 
length. Wright no. 1876, the type of what ANDERSSON called S. nigra latifolia 
brevifolia testacea, a specimen with male and female flowers and very young 
leaves, has been erroneously regarded by some authors as being the same as 
S. nigra longipes venulosa And. ‘The type of this form which I have not seen 
from Mexico is Wright no. 1879. It represents the southwestern variety of 
S. longipes Shuttl. (S. occidentalis Bosc apud Koch, non Walter) and has to be 
called S. longipes, var. venulosa (And.) Schn., n. comb. 
§ The second specimen mentioned by Hemstey, which had been collected by 
Jurgensen (no. 307) in the “Sierra San Pedro Nolasco” (? state of Oaxaca), does not 
belong to our variety, but I have not seen it. 
