Salix barrattiana
Salix farriae
Barratt's willow
Farr's willow
stipules (sometimes marcescent), foliaceous, (resinous, 1.5–7.5 mm), apex acute;
petiole shallowly grooved, or convex to flat adaxially, 4–15 mm, villous or puberulent adaxially, (weakly ventricose around floral buds);
largest medial blade narrowly to broadly elliptic, oblanceolate, or obovate, 35–95 × 10–29 mm, 2.2–4.2(–5) times as long as wide, base usually convex, rounded, or cuneate, sometimes cordate, margins flat, entire, apex acute, convex, or acuminate, abaxial surface not glaucous, moderately to very densely long-silky tomentose to glabrescent, hairs wavy, adaxial slightly glossy, sparsely villous or pubescent to glabrescent;
proximal blade margins entire;
juvenile blade color sometimes obscured by hairs, very densely long-silky abaxially, hairs white.
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.
adaxial nectary narrowly oblong to oblong, 0.4–1.8 mm;
filaments distinct;
anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.4–0.6 mm.
adaxial nectary oblong, square, or ovate, 0.2–0.9 mm;
filaments distinct, glabrous;
anthers yellow, 0.3–0.6 mm.
adaxial nectary narrowly oblong to oblong, 0.6–1.3 mm;
stipe 0.2–0.6 mm;
ovary pyriform, (hairs refractive), beak gradually tapering to styles;
ovules 16–21 per ovary;
styles 0.6–1.8 mm;
stigmas 0.28–0.47–0.64 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.
4.5–6 mm.
3–7 mm.
flowering before leaves emerge; staminate stout or subglobose, 20–57 × 13–18 mm, flowering branchlet 0–2 mm; pistillate densely flowered, slender to stout, 28–92(–105 in fruit) × 12–19 mm, flowering branchlet 0–5 mm;
floral bract brown or black, 2.8–5.2 mm, apex acute to convex, abaxially hairy, hairs straight.
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.
Salix barrattiana
Salix farriae
Salix barrattiana has stipules and buds that are typically strongly oily or resinous, staining pressing sheets yellow. The Montana and Wyoming records are the basis for a conservation assessment by J. A. R. Ladyman (www.fs.fed.us/r2/projects/scp/assessments/salixbarrattiana.pdf). The Wyoming population is represented by three staminate specimens. Their buds and stipules are not conspicuously oily and further verification is needed.
Salix barrattiana is placed here in sect. Villosae, but it is morphologically similar also to members of sect. Lanatae. The most conspicuous difference is its hairy ovaries. Inconsistent phenetic clustering of this species (G. W. Argus 1997) shows the difficulty in determining its sectional placement. The suggestion that it may link the two sections by hybridization and introgression, or by alloploidy, still remains to be assessed.
Hybrids:
Salix barrattiana forms natural hybrids with S. barclayi, S. commutata, and S. pseudomyrsinites.
Salix barrattiana × S. commutata: This hybrid, known from Alberta and the Yukon, usually resembles S. barrattiana, but ovaries are hairy in patches, stipes at ca. 1 mm are long for that species, and buds and stipules are not oily. A British Columbia specimen has glabrous ovaries and oily stipules.
Salix barrattiana × S. pseudomyrsinites is a rare putative hybrid that combines characteristics of the two parents.
(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:
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
