Salix breweri

Bebb

Willows Calif., 88. 1879.

Common names: Brewer’s willow
IllustratedEndemic
Treatment appears in FNA Volume 7. Treatment on page 160. Mentioned on page 93, 96, 98, 107, 156, 157, 161.

Shrubs, 1–4 m. Stems: branches yellowbrown or redbrown, not or weakly glaucous, sparsely to densely tomentose; branchlets yellowish to yellowbrown, densely velvety, long-silky, or tomentose, (buds caprea-type or intermediate). Leaves: stipules rudimentary on early ones, foliaceous on late ones, apex acuminate, acute, or rounded; petiole shallowly grooved adaxially, 3–7 mm, tomentose adaxially; largest medial blade lorate, very narrowly elliptic, or oblanceolate, 58–144 × 11–30 mm, 2.8–7 times as long as wide, base convex or cuneate, margins slightly revolute, entire, irregularly serrate, serrulate, or sinuate, apex convex, acute, or acuminate, abaxial surface glaucous (sometimes obscured by hairs), sparsely to densely tomentose or woolly, hairs wavy, adaxial slightly glossy or dull, sparsely tomentose or villous; proximal blade margins entire; juvenile blade reddish or yellowish green, densely long-silky abaxially, hairs white or gray. Catkins flowering before leaves emerge; staminate slender, stout, or subglobose, 12–47 × 7–12 mm, flowering branchlet 0–1 mm; pistillate moderately densely flowered, slender, 19–59 (–80 in fruit) × 5–10 mm, flowering branchlet 0–1 mm; floral bract tawny or light rose, 0.8–1.5 mm, apex rounded, abaxially hairy, hairs straight. Staminate flowers: adaxial nectary very narrowly oblong, 0.8–1.4 mm; filaments distinct or connate basally, glabrous; anthers yellow, ellipsoid or globose, 0.4–0.6 mm. Pistillate flowers: (abaxial nectary rarely present), adaxial nectary narrowly oblong to oblong, 0.6–1.5 mm, longer than stipe, (nectaries distinct); stipe 0–0.4 mm; ovary squat, flask-shaped, very densely tomentose, beak abruptly tapering to styles; ovules 4–12 per ovary; styles (sometimes distinct), 0.4–0.8 mm; stigmas flat, abaxially non-papillate with rounded tip, 0.16–0.24 mm. Capsules 4–6 mm.


Phenology: Flowering early Mar-mid Apr.
Habitat: Streamshores, rocky or gravelly substrates, serpentine soils
Elevation: 300-1300 m

Discussion

Hybrids:

Salix breweri apparently hybridizes with S. lasiolepis. The plants in Yolo County have less hairy leaves, long petioles, and capsules that are relatively long and slender, glabrescent, and distinctly stipitate.

See 111. Salix delnortensis for a discussion of origin.

Selected References

None.

Lower Taxa

None.

... more about "Salix breweri"
21 +, 4 +, 1 +, 16 +  and 29 +
114 +, 95 +, 76 +, 57 +  and 38 +
glaucous +  and sparsely densely tomentose or woolly +
narrowly oblong +  and oblong +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
villous;tomentose +
dull +  and glossy +
globose +  and ellipsoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Rounded (?) +, Acuminate (?) +, Acute (?) +  and Convex (?) +
George W. Argus +
cuneate +  and convex +
Sitchenses +
tapering +
yellowish green +  and reddish +
ferruginous +  and white +
toothed +  and 2-fid +
persistent +
redbrown +  and yellowbrown +
weakly glaucous +  and sparsely densely tomentose +
flowered +  and pistillate +
tomentose +, long-silky +  and velvety +
subglobose +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
intermediate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
pendulous +, spreading +  and erect +
Brewer’s willow +
300-1300 m +
connate +  and distinct +
light rose +  and tawny +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Streamshores, rocky or gravelly substrates, serpentine soils +
gray +  and white +
straight +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
5.8 cm58 mm <br />0.058 m <br /> (14.4 cm144 mm <br />0.144 m <br />) +
oblanceolate +, elliptic +  and lorate +
1.1 cm11 mm <br />0.011 m <br /> (3 cm30 mm <br />0.03 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
serrate +  and entire +
sinuate +  and serrulate +
rudimentary +
2-7[-10]-carpellate +
flask--shaped +  and squat +
glandular-dotted +
usually convex;flat +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering early Mar-mid Apr. +
Willows Calif., +
overlapping +
distinct +
Illustrated +  and Endemic +
decumbent;erect +
non-papillate +
cylindrical +
0.016 cm0.16 mm <br />1.6e-4 m <br /> (0.024 cm0.24 mm <br />2.4e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
caducous +  and persistent +
distinct +  and connate +
persistent +  and deciduous +
Salix sect. Breweriana +  and Salix subsect. Sitchenses +
Salix breweri +
Salix sect. Sitchenses +
species +
rounded +
sympodial +, branching +  and heterophyllous +