Salix lasiandra var. lasiandra

unknown
Common names: Pacific willow
Synonyms: Salix lasiandra var. lyallii (Andersson) LittleSalix lasiandra var. macrophylla RaupSalix lasiandra var. recomponens unknown
Treatment appears in FNA Volume 7. Treatment on page 47. Mentioned on page 46, 48.
Revision as of 22:12, 26 July 2019 by FNA>Volume Importer
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Leaves: stipules sometimes rudimentary on early ones, foliaceous on late ones, apex convex; petiole (2–)4–30 mm, with clusters of spherical or foliaceous glands distally; largest medial blade usually hypostomatous or hemiamphistomatous (rarely amphistomatous), narrowly oblong, very narrowly elliptic, narrowly elliptic, lanceolate, narrowly lanceolate, or oblanceolate, base convex to rounded, abaxial surface usually glaucous (rarely not glaucous), glabrous or glabrescent, hairs white, sometimes also ferruginous, straight or wavy (secondary veins protruding abaxially and adaxially). Catkins: staminate 21–78 × 9–14 mm, flowering branchlet 5–24 mm; pistillate moderately to very densely flowered, slender, stout, or subglobose, 18.5–103 × 6–17 mm, flowering branchlet 6–56 mm; floral bract 1.7–4 mm. Staminate flowers: abaxial nectary 0.4–0.6 mm, adaxial nectary 0.2–0.5 mm, nectaries distinct. Pistillate flowers: adaxial nectary 0.2–0.6 mm; stipe 0.8–2 mm; ovules 16–24 per ovary; styles 0.2–0.8 mm. 2n = 76.


Phenology: Flowering late Mar-early Jun.
Habitat: Thickets, silty, sandy to gravelly alluvium along streams
Elevation: 0-2700 m

Distribution

V7 38-distribution-map.gif

Alta., B.C., Man., N.W.T., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash.

Discussion

Hybrids:

Variety lasiandra forms natural hybrids with Salix eastwoodiae. Hybrids with S. gooddingii have been reported (C. K. Schneider 1921), but no convincing specimens have been seen.

Selected References

None.

Lower Taxa

None.
George W. Argus +
unknown +
Pacific willow +
Alta. +, B.C. +, Man. +, N.W.T. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +  and Wash. +
0-2700 m +
Thickets, silty, sandy to gravelly alluvium along streams +
Flowering late Mar-early Jun. +
Pl. Hartw., +
Salix lasiandra var. lyallii +, Salix lasiandra var. macrophylla +  and Salix lasiandra var. recomponens +
Salix lasiandra var. lasiandra +
Salix lasiandra +
variety +