Salix lemmonii

Bebb

Willows Calif., 88. 1879.

Common names: Lemmon’s willow
IllustratedEndemic
Treatment appears in FNA Volume 7. Treatment on page 154. Mentioned on page 100, 107, 109, 136, 153, 155.

Plants 1.2–4 m, (sometimes forming clones by stem fragmentation). Stems: branches (sometimes highly brittle at base), yellowbrown or redbrown, not to sometimes strongly glaucous, (dull to slightly glossy), glabrous or puberulent at nodes; branchlets yellowbrown to redbrown, (weakly or strongly glaucous or not), puberulent, (buds alba-type or intermediate, scale inner membranaceous layer free, not separating from outer layer). Leaves: stipules absent or rudimentary on early ones, foliaceous on late ones, apex acute; petiole convex to flat adaxially, 5–16 mm, tomentose or velvety adaxially; largest medial blade (sometimes amphistomatous), lorate or very narrowly to narrowly elliptic, 44–110 × 6–22 mm, 3.4–9.9 (–12) times as long as wide, base convex or cuneate, margins flat to slightly revolute, entire or shallowly serrulate, apex acuminate to acute, abaxial surface glaucous, sparsely short or long-silky to glabrescent, hairs (white, also ferruginous), straight or wavy, adaxial slightly glossy, sparsely short-silky, (hairs also ferruginous); proximal blade margins entire or shallowly serrulate; juvenile blade reddish or yellowish green, densely long-silky abaxially, hairs white and ferruginous. Catkins flowering just before or, sometimes, as leaves emerge; staminate stout, (1.4–2.7–) 16–28 × 9–17 mm, flowering branchlet 1–3 mm; pistillate loosely flowered, stout, (1.5–2.7–) 19–44 (–65 in fruit) × 10–18 mm, flowering branchlet 1–6 mm; floral bract brown or bicolor, 1.1–2.4 mm, apex rounded or convex, abaxially hairy, hairs straight. Staminate flowers: adaxial nectary narrowly oblong, oblong, or ovate, 0.3–0.9 mm; filaments distinct or connate less than 1/2 their lengths, glabrous or hairy on proximal 1/2 or basally; anthers yellow, ellipsoid, shortly cylindrical, or globose, 0.5–0.9 mm. Pistillate flowers: adaxial nectary oblong, narrowly oblong, or ovate, 0.4–1 mm; stipe 1.1–2.1 mm; ovary pyriform, beak sometimes slightly bulged below styles; ovules 12 per ovary; styles 0.3–1 mm; stigmas flat, abaxially non-papillate with rounded or pointed tip, 0.2–0.3–0.48 mm. Capsules 5–7 mm. 2n = 76.


Phenology: Flowering early Mar-late Jun.
Habitat: Streams, lakeshores, wet meadows, springs, old burns in subalpine conifer forests, sandy, granite substrates
Elevation: 1400-3500 m

Distribution

V7 177-distribution-map.gif

B.C., Calif., Idaho, Mont., Nev., Oreg., Wyo.

Discussion

See 85. Salix drummondiana for comments on differences.

Hybrids:

Salix lemmonii forms natural hybrids with S. geyeriana.

Selected References

None.

Lower Taxa

None.

"-0.48mm" is not declared as a valid unit of measurement for this property.

... more about "Salix lemmonii"
21 +, 4 +, 1 +, 16 +  and 29 +
long-silky to glabrescent +  and short +
ovate +  and oblong +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
globose +, cylindrical +  and ellipsoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Convex (?) +, Rounded (?) +, Acuminate (?) +  and Acute (?) +
George W. Argus +
cuneate +  and convex +
Salix sect. Vetrix +
tapering +
yellowish green +  and reddish +
ferruginous +  and white +
serrulate +  and entire +
toothed +  and 2-fid +
persistent +
flowered +  and pistillate +
slender +  and stout +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
intermediate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
pendulous +, spreading +  and erect +
Lemmon’s willow +
B.C. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +  and Wyo. +
1400-3500 m +
connate +  and distinct +
hairy +  and glabrous +
bicolor +  and brown +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
Streams, lakeshores, wet meadows, springs, old burns in subalpine conifer forests, sandy, granite substrates +
white and ferruginous +
straight +
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 +
3.4-9.9(-12) +
44mm;110mm +
very narrowly +  and lorate +
0.6 cm6 mm <br />0.006 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
serrulate +  and entire +
flat +  and slightly revolute +
2-7[-10]-carpellate +
short-silky +
pyriform +
glandular-dotted +
velvety +  and tomentose +
convex;flat +
0.5 cm5 mm <br />0.005 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Flowering early Mar-late Jun. +
Willows Calif., +
overlapping +
distinct +
Illustrated +  and Endemic +
redbrown +  and yellowbrown +
decumbent;erect +
non-papillate +
cylindrical +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
caducous +  and persistent +
distinct +  and connate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
persistent +  and deciduous +
Salix lemmonii +
Salix sect. Geyerianae +
species +
pointed +  and rounded +
sympodial +, branching +  and heterophyllous +