Salix ×smithiana

Willdenow
Treatment appears in FNA Volume 7. Treatment on page 132. Mentioned on page 94, 133, 137, 149.

Salix ×smithiana Willdenow: S. caprea × S. viminalis an introduced European hybrid commonly naturalized in eastern Canada (New Brunswick, Newfoundland, Nova Scotia, and Prince Edward Island), where it introduced for coarse basketry. Only pistillate specimens known and seed-set has not been noted. Its spread apparently by cultivation and stem fragmentation. It characterized by: shrubs or trees, 2–10 m; branches yellowbrown, brownish, or gray-brown, pubescent to glabrescent, ± brittle at base, peeled 3–5 year-old branches smooth or striate, striae few, 0–6 mm; branchlets not glaucous, moderately densely pubescent; largest medial leaf-blades very narrowly elliptic, narrowly elliptic, or narrowly oblong, 2.8–4.9 (–6.4) times as long as wide, margins entire or sinuate, adaxial surfaces pubescent; catkins flowering before leaves emerge; stipes 0.9–2 mm; ovaries pyriform to obclavate, moderately to very densely short-silky; styles 0.5–1.2 mm; stigmas slenderly cylindrical, lobes 0.6–1.2 mm; and capsules 5–7 mm.

Distribution

Introduced; N.B., Nfld. and Labr. (Nfld.), N.S., P.E.I.

Discussion

Hybrids Salix caprea × S. viminalis and S. cinerea × S. viminalis are commonly recognized in North American floras. They are difficult to separate and their nomenclature is confusing. I am following G. Larsson (1995), who typified S. ×smithiana and cited S. ×sericans (formerly S. cinerea × S. viminalis) and S. caprea × S. viminalis as synonyms. These two S. viminalis hybrids are very similar. Salix caprea × S. viminalis has wood with striae 2–6 mm and leaves usually broadest in the middle; S. cinerea × S. viminalis has decorticated wood with striae 10+ mm and leaves usually broader toward the tip (B. Jonsell and T. Karlsson 2000+, vol. 1). Authentic S. cinerea × S. viminalis has not been seen from the flora area.

See 86. Salix pellita and 98. S. viminalis for more discussion of morphologies.

Selected References

None.

Lower Taxa

None.

... more about "Salix ×smithiana"
21 +, 4 +, 1 +, 16 +  and 29 +
114 +, 95 +, 76 +, 57 +  and 38 +
red turning yellow +
Laciniate (?) +, Toothed (?) +  and Entire (?) +
George W. Argus +
Willdenow +
Salix sect. Vetrix +
tapering +
ferruginous +  and white +
toothed +  and 2-fid +
persistent +
yellowbrown +
striate +  and smooth +
flowered +  and sessile +
subglobose to globose +  and stout +
slender +  and stout +
intermediate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
pistillate +  and staminate +
pendulous +, spreading +  and erect +
N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +  and P.E.I. +
connate +  and distinct +
hairy +  and glabrous +
light rose +, bicolor +, tawny +, black +  and brown +
pistillate +  and staminate +
bisexual +  and unisexual +
gray +, ferruginous +  and white +
flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
oblong +  and narrowly broadly elliptic oblanceolate obovate or broadly obovate +
arranged +  and alternate +
marcescent +
deciduous +
sinuate +  and entire +
2-7[-10]-carpellate +
hairy +  and glabrous +
pyriform +  and obclavate +
glandular-dotted +
usually convex;flat +
Exempl. Rév. Salix, +
overlapping +
distinct +
decumbent;erect +
non-papillate +
cylindrical +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
caducous +  and persistent +
0 cm0 mm <br />0 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
distinct +  and connate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
persistent +  and deciduous +
Salix ×smithiana +
Salix sect. Cinerella +
species +
pointed +  and rounded +
gray-brown +  and brownish +
short-silky;pubescent;pubescent;glabrescent +
oblong;elliptic;oblong;elliptic +
200 cm2,000 mm <br />2 m <br /> (1,000 cm10,000 mm <br />10 m <br />) +
sympodial +, branching +  and heterophyllous +
tree +  and shrub +