Salix amygdaloides
Salix farriae
peach-leaf willow
Farr's willow
stipules absent or rudimentary on early ones, foliaceous or rudimentary on late ones, apex rounded;
petiole (margins covering groove, not glandular or with spherical glands distally), 7–21 mm, glabrous or puberulent adaxially;
largest medial blade (sometimes amphistomatous), very narrowly elliptic, elliptic, lanceolate, or lorate, 55–130 × 24–37 mm, 2.8–6 times as long as wide, base convex, cuneate, or cordate, margins serrulate, apex acuminate to caudate, abaxial surface glaucous, glabrous, adaxial dull, glabrous or sparsely pubescent along midrib;
proximal blade margins entire or shallowly serrulate;
juvenile blade glabrous or pubescent abaxially, hairs white and/or ferruginous.
stipules absent, rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute;
petiole shallowly grooved, or convex to flat adaxially, 5–8 mm, puberulent adaxially;
largest medial blade narrowly elliptic or elliptic, (20–)30–65(–75) × (8–)10–30(–35) mm, 1.8–3.7 times as long as wide, base convex, rounded, or cuneate, margins slightly revolute or flat, entire or shallowly serrulate, apex acute, acuminate, or convex, abaxial surface glaucous, glabrous or glabrescent, adaxial slightly glossy or dull, glabrous or pilose, midrib sparsely pubescent, hairs short, white, and ferruginous;
proximal blade margins entire or serrulate;
juvenile blade green, glabrous, or midrib sparsely villous abaxially, hairs usually white and ferruginous.
abaxial nectary 0.2–0.7 mm, adaxial nectary narrowly oblong to square, 0.3–0.8 mm, nectaries distinct;
stamens 3–7;
filaments hairy on proximal 1/2 or basally;
anthers 0.5–0.6 mm.
adaxial nectary oblong, square, or ovate, 0.2–0.9 mm;
filaments distinct, glabrous;
anthers yellow, 0.3–0.6 mm.
adaxial nectary square, 0.1–0.6 mm;
stipe 1.4–3.2 mm;
ovary pyriform, beak slightly bulged below styles;
ovules 16–18 per ovary;
styles 0.2–0.4 mm;
stigmas 0.24–0.31–0.4 mm.
adaxial nectary oblong or ovate, 0.4–0.8 mm, shorter than stipe;
stipe 0.5–1.2 mm;
ovary pyriform, glabrous, beak gradually tapering to styles;
ovules 12–19 per ovary;
styles 0.3–1.2 mm;
stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.3–0.56 mm.
3–7 mm.
3–7 mm.
staminate 23–80 × 5–12 mm, flowering branchlet 3–28 mm; pistillate 41–110(–127 in fruit) × 8–16 mm, flowering branchlet 17–35 mm;
floral bract 1.5–2.8 mm, apex acute to rounded, entire or toothed, abaxially sparsely to moderately densely hairy proximally, hairs wavy; pistillate bract deciduous after flowering.
flowering as leaves emerge; staminate stout, 11–25 × 6–11 mm, flowering branchlet 1–5 mm; pistillate densely or loosely flowered, stout, 14–38.5 × 8–14 mm, flowering branchlet 1.5–14 mm;
floral bract brown, black, or bicolor, 0.7–2 mm, apex rounded to convex, abaxially hairy, hairs wavy.
= 38.
Salix amygdaloides
Salix farriae
Presence of Salix amygdaloides in Massachusetts, New Hampshire, and Vermont has not been verified; its occurrence in those New England states was reported by H. A. Gleason and A. Cronquist (1991), and by M. L. Fernald (1950).
Hybrids:
Salix amygdaloides forms natural hybrids with S. gooddingii and S. nigra. Hybrids with S. caroliniana (N. M. Glatfelter 1898) and S. eriocephala (M. L. Fernald 1950) have been reported; no convincing specimens have been seen. Controlled pollination between S. amygdaloides and S. eriocephala, S. interior, and S. petiolaris set no seed; controlled pollination with S. lucida produced a few seeds; some seedlings suffered necrosis in the cotyledon stage (A. Mosseler 1990).
Salix amygdaloides × S. gooddingii (S. ×wrightii Andersson): This hybrid occurs throughout the Rio Grande Valley, Texas, and New Mexico (C. K. Schneider 1919; C. R. Ball 1961), and at Happy and Rio Frio, Texas, and Virgil Run, Arizona. The leaves are somewhat glaucous abaxially, as in S. amygdaloides, but they are linear to narrowly elliptic and branchlets are sparsely pubescent as in S. gooddingii.
Salix amygdaloides × S. nigra (S. ×glatfelteri C. K. Schneider) resembles S. amygdaloides in leaves somewhat glaucous abaxially, but usually linear or narrowly elliptic, as in S. nigra. The stipules are not as prominent as in S. nigra but are foliaceous on late leaves; it should be expected wherever the ranges of the two species overlap. The hybrid is common in Missouri, where N. M. Glatfelter (1894) estimated that ca. 40% of the populations were hybrids, and in Illinois (R. H. Mohlenbrock 1980; G. Wilhelm, pers. comm.). Putative hybrids occur also in Ontario. Narrow leaves are typical of juvenile plants of S. amygdaloides but even at that stage they tend to be broadest at the midpoint or toward the base rather than in a midzone as in S. nigra.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Salix farriae is a cordilleran species ranging from Wyoming to central British Columbia with disjunct occurrences in northwestern British Columbia, western Northwest Territories, and southern Yukon. It is related to S. hastata, an amphiberingian species ranging from Scandinavia to southwestern Yukon and northwestern Northwest Territories. There may be reasons for treating these slightly different plants as S. hastata var. farriae, but R. D. Dorn (1975) maintained them as a species based on flavonoid differences. In a phenetic study (G. W. Argus 2007), the two taxa had dissimilarity values at the same level as other closely related species. They are treated here as species, primarily because their ranges are disjunct. They can be separated as follows:
Salix farriae is distinguished from S. hastata by having largest medial blades narrowly elliptic to elliptic, pistillate nectaries oblong or ovate, stipules on early leaves absent or rudimentary (sometimes foliaceous), branches strongly to weakly glaucous or not, floral bract apices rounded, and plants of the cordillera in Alberta and British Columbia, in Idaho, Montana, Oregon, and Wyoming; S. hastata has largest medial blades narrowly elliptic to broadly elliptic or broadly obovate, pistillate nectaries square, stipules on early leaves foliaceous (sometimes rudimentary), branches not glaucous, floral bract apices acute or rounded, and plants of Alaska, Northwest Territories, and Yukon.
Salix farriae and S. barclayi are sympatric in western Canada and the Pacific Northwest, where they are difficult to separate. Salix farriae can often be recognized by its largest medial leaves with at least some minute, ferruginous hairs on the adaxial midrib or blade surfaces; ferruginous hairs do not occur in S. barclayi. Its leaf margins also tend to be more nearly entire, but relatively short teeth are not infrequent. Such plants are sometimes interpreted as intergrades between S. farriae and S. barclayi (R. D. Dorn 1975). The variable leaf toothing also occurs in S. hastata and may not be a reliable indicator of intergradation. Salix farriae also differs from S. barclayi in usually having shorter anthers, 0.3–0.6 mm versus 0.6–1 mm in S. barclayi. See 61. S. barclayi.
Hybrids:
Salix farriae forms natural hybrids with S. barclayi.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
OR, 
WA - Local Web sites:
CalFlora, CalPhotos, 
Flora NW, 
IL Wildflowers, 
KS Wildflowers, 
MI Flora, 
MN Wildflowers, 
MO Plants, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
- Local floras: BC, OR, WA
- Local Web sites: Flora NW, PNW Herbaria
- WildflowerSearch
- iNaturalist (observations)
- USDA Plants Database
- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
