WILLOW FAMILY 



491 



Salix laevigata araqu'pa (Jepson) Ball, Bot. Gaz. 72: 234. 1921. (Salix laevigata, forma araquifa Jcpson 

 Fl. Calif. 339. 1909.) Small tree; seasonal twigs, petioles, and basal portion of midrib beneath, densely pilose. 



Sparingly in the northern and centrpl part of the range of the species, abundant in southern California 

 and western Arizona. Type locality: "dry gulches, Araquipa Hills, Solano County," California. 



6. Salix hindsiana Bentham. A'allev \\'illo\v. Fi^". 1195. 



SalJx hindsiana Benth. PI. Ilartw. 335. 1857. 



Salix sessilifolia hindsiana (Benth.) Anderss. in Oefv. 



K. Vet.-Akad. Forh. 15: 117. 1858; in Proc. Am. 



Acad. 4: 56. (Sal. Bor.-Am.) 1858. 



Shrub or tree 3-9 m. high, and 2.5 or 3 dm. 

 in diameter, with gray furrowed bark ; young 

 twigs densely silvery tomentose ; stipules min- 

 ute or wanting ; leaves linear to linear-lanceo- 

 late, tapering to both ends, 4-8 cm. long, 3-6 

 or 10 mm. wide, usually entire, silky-villous or 

 subtomentose, sometimes becoming glabrate ; 

 aments serotinous (on leafy peduncles 2-S cm. 

 long), numerous, solitary or in nairs, 2-4 or 

 5 cm. long ; capsule subsessile, 5-6 mm. long, 

 lanceolate, villous-tomentose ; style about 0.5 

 mm. long, stigmas divided, 1 mm. long, often 



revolute ; stamens 2, filaments 

 scales oblanceolate, acute, villous. 



pubescent ; 



River banks up to 3,000 feet elevation, Uiwer and 

 Lower Sonoran Zones; southwestern Oregon (Douglas, 

 Jackson, Josephine and Klamath Counties) and Cali- 

 fornia to Lower California. Type locality: "ad ripas 

 fluvii Sacramento." 



A dubious variety, leucodendroides, described as having larger, denticulate leaves, is recognized liy 

 Rowlee (S. inacrostachya leucodendroides, Bull. Torrey Club 27 : 250. 1900) and Schneider {S. hindsiana 

 leucodendroides (Rowl.) Schn. Bot. Gaz. 65: 26. 1918) as replacing the species in southern California, 

 from Monterey and Kern Counties southward. 



7. Salix sessilifolia Nntt. Soft-leaved Willow, 



Fig. 1196. 



Salix sessilifolia Nutt. Sylva 1: 68. 1843. 



Shrub 2-7 m. high ; branchlets villous- 

 tomentose ; stipules ovate-lanceolate ; leaves 

 narrowly to broadly lanceolate or elliptic- 

 lanceolate, 2.5-5 cm. long, 8-15 mm. wide 

 (the sprout leaves larger) acute to rounded 

 at the base, acute or short-acuminate and 

 subaristate at the apex, spinulose-denticu- 

 late, especially on the outer half, green 

 and densely to thinly lanate-tomentose on 

 both sides ; aments serotinous, solitary or 

 m twos or threes, terminal on leafy pe- 

 duncles 1-5 cm. long; aments 4—6 cm. long, 

 the deciduous yellow scales broadly elliptic- 

 lanceolate, densely villous ; pedicel 0.5 mm. 

 long, villous ; capsul lanceolate, 5-6.5 mm. 

 long, villous ; style about 0.5 mm. long, 

 divided ; stigmas nearly 1 mm. long, 

 divided ; stamens 2 ; filaments pubescent. 



River banks. Upper Sonoran and Transition Zones; Vancouver Island, British Columbia, and the Puget 

 Sound district, to the upper valley of the Willamette River, and on the Umpqua River, in Oregon. Type 

 locality: on the "rocky borders of the Oregon (Columbia) at the confluence of the Wahlamet" (Willamette). 



