sules and often produced a shoot from the axis of the top peduncle leaf, and the 

 stipules are more or less glandular. 



In habitats similar to those of S. nigra, in s. and s.w. Tex. (Hidalgo, Starr, 

 Uvalde and Val Verde cos.); represented throughout Lat. Am. to the s. tip of 

 S.A. by several varieties. 



The above Texas collections, originally designated as this species by W. Andrew 

 Archer, should probably be referred to var. stipulacea (Mart. & Gal.) Schneid., 

 of Mexico and Central America. 



3. Salix Gooddingii Ball var. variabilis Ball. Southwestern black willow. 



Trees with 2 to 4 trunks, to about 15 m. tall, with gray furrowed bark; branch- 

 lets slender, yellowish or yellowish-brown, pubescent to puberulous, becoming 

 glabrous with age; bud scales 2-4 mm. long, colored and clothed as the twigs; 

 stipules 1-3 (-10) mm. long, semicordate to subreniform or sublunate, glandular- 

 denticulate, often gland-bearing on inner surface; petioles 3-6 (-10) mm. long, 

 yellowish, pubescent, becoming glabrous; blades linear-lanceolate to narrowly 

 lanceolate, often somewhat falcate, 6-10 (-17) cm. long, 1-1.5 (-3) cm. wide, 

 acute at base, long-acuminate at apex, at first pubescent but later glabrous, green 

 or yellowish-green, glandular-denticulate with about 8 teeth per cm.; aments 

 coetaneous, numerous, 3-6 (-8) cm. long, 1.2-2 cm. wide, lax, terminating lateral 

 seasonal shoots that bear 3 to 6 small leaves; scales oblong-lanceolate to oblanceo- 

 late, sometimes toothed, 2.5-3 mm. long, yellow, deciduous; stamens 3 to 6, the 

 filaments pilose on lower third; ovaries glabrous or thinly pilose; capsules ovate- 

 conic, 5.5-7 mm. long, glabrous or sometimes papillose; stigmas 2, divided; 

 pedicels 1.5-3 mm. long. 



In alluvial soil near bodies of water, swamps and stream courses, in the w. 

 third of Tex., across N.M. and Ariz, to Calif, and n. Mex., spring. 



It is very doubtful that this plant should be maintained separately from S. nigra. 



4. Salix amygdaloides Anderss. Peach-leaf willow. 



Shrub or tree 3-12 m. tall, sometimes multitrunked, the fissured bark dark- 

 brown or reddish-brown; branches gray-brown; twigs yellow to reddish-brown, 

 glabrous, not brittle, drooping at tip; stipules wanting or semilunate and to 12 mm. 

 long; petioles slender, 6-20 mm. long, often twisted, glabrous, yellowish; blades 

 lanceolate to ovate-lanceolate, 5-10 (-12) cm. long, 7-30 mm. wide, acuminate, 

 closely serrulate, acute or rounded at base, glabrous, yellowish, green above, glau- 

 cous beneath; aments coetaneous, linear, lax, 2.5-7 cm. long, on leafy lateral 

 peduncles to 4 cm. long; scales yellow, lanceolate or broader, glabrate on outer 

 surface, villous within, deciduous; stamens 4 to 7, the free filaments hairy below; 

 capsules lanceolate, 4-5 mm. long, glabrous; styles 0.3-0.5 mm. long, the stigmas 

 shorter. S. nigra of W. & S. 



In alluvial soils along streams and near bodies of water, in Okla. (Cimarron 

 Co.), in the Tex. Plains Country and Trans-Pecos, N.M. (Union, Dona Ana, 

 Chaves, Grant, Sierra, Socorro, Otero, San Juan and Bernalillo cos.) and Ariz, 

 (Apache and Pima cos.), spring; Que. to B.C., s. to Pa., s.w. Ky., Okla., w. Tex., 

 N.M., Ariz, and Nev.; (?) Mex. 



Var. amygdaloides and var. Wrightii (Anderss.) Schneid. (5. Wrightii Anderss.) 

 are distinguished in the key. The much narrower leaves of var. Wrightii are 

 usually 7-10 or rarely to 15 mm. wide and mostly 6-8 cm. long, with an acute 

 base and tapering acuminate apex. 



5. Salix lasiandra Benth. Yellow willow tree. 



Coarse several-stemmed shrub or small tree to about 12 m. tall; trunk to about 

 6 dm. thick, usually much less, the smooth gray bark eventually fissured; leaves 

 and twigs finely spreading-hairy when young, soon glabrate to glabrous; stipules 



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