Salix chamissonis

Andersson in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 16(2): 290. 1868.

Common names: Chamisso willow
Illustrated
Treatment appears in FNA Volume 7. Treatment on page 71. Mentioned on page 63, 72.

Plants 0.03–0.1 m, (dwarf), forming clones by layering. Stems long-trailing; branches redbrown, glabrous; branchlets yellow-green, glabrous. Leaves: stipules foliaceous; petiole 5–13 mm, (sometimes with 1–2 pairs of spherical glands distally); largest medial blade hypostomatous, broadly elliptic, subcircular, or obovate, 30–50 × 17–30 mm, (1.1–) 1.6–1.9 (–2.1) times as long as wide, base cuneate, margins flat, closely and prominently serrulate or spinulose-serrulate, (teeth 7–14 per cm), apex acuminate, convex, acute, or rounded, abaxial surface glaucous, glabrous, adaxial slightly glossy, glabrous; proximal blade margins entire, closely gland-dotted, or serrulate; juvenile blade glabrous or sparsely long-silky abaxially. Catkins: staminate 30–64 × 12–22 mm, flowering branchlet 4–28 mm; pistillate densely or moderately densely flowered, stout, 32–73 (–105 in fruit) × 10–17 mm, flowering branchlet 4–28 mm; floral bract brown or black, 1.2–2.8 mm, apex convex or rounded, entire, abaxially moderately densely hairy, hairs straight. Staminate flowers: abaxial nectary absent, adaxial nectary square, 0.5–0.9 mm; filaments distinct, glabrous; anthers ellipsoid or shortly cylindrical, 0.5–0.6 mm. Pistillate flowers: abaxial nectary absent, adaxial nectary square or oblong, 0.3–1 mm, equal to or longer than stipe; stipe 0.2–0.4 mm; ovary obclavate, pilose or villous, hairs ribbonlike, (sometimes in patches or streaks, refractive), beak gradually tapering to styles; ovules 12–18 per ovary; styles 0.8–1.2 mm; stigmas flat, abaxially non-papillate with rounded or pointed tip, or slenderly cylindrical, 0.4–0.7 mm. Capsules 5–7 mm. 2n = 114.


Phenology: Flowering mid-late Jun.
Habitat: Arctic-alpine, Dryas heath tundra, dwarf birch-lichen tundra, sandy lakeshores, snowbeds, rock stripes or gravel, wet seepage areas, sedge meadows, willow-dwarf birch-sphagnum bogs, limestone and shale substrates
Elevation: 0-1500 m

Distribution

V7 69-distribution-map.gif

N.W.T., Yukon, Alaska, e Asia (Chukotka), e Asia (Commander Islands), e Asia (Russian Far East), e Asia (disjunct in Sakhalin)

Discussion

Salix chamissonis is disjunct on Attu Island in Alaska.

Selected References

None.

Lower Taxa

None.

... more about "Salix chamissonis"
glabrous +  and glaucous +
oblong +  and square +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
red turning yellow +
cylindrical +  and ellipsoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Rounded (?) +, Convex (?) +, Acute (?) +  and Acuminate (?) +
George W. Argus +
Andersson in A. P. de Candolle and A. L. P. P. de Candolle +
cuneate +
Salix sect. Chamaetia +
tapering +
serrulate +  and entire +
long-silky +  and glabrous +
toothed +  and 2-fid +
persistent +
subglobose +  and globose +
0.4 cm4 mm <br />0.004 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
flowered +, pistillate +  and staminate +
3.2 cm32 mm <br />0.032 m <br /> (7.3 cm73 mm <br />0.073 m <br />) +
pendulous +, spreading +  and erect +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Chamisso willow +
N.W.T. +, Yukon +, Alaska +, e Asia (Chukotka) +, e Asia (Commander Islands) +, e Asia (Russian Far East) +  and e Asia (disjunct in Sakhalin) +
0-1500 m +
black +  and brown +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
spherical +
Arctic-alpine, Dryas heath tundra, dwarf birch-lichen tundra, sandy lakeshores, snowbeds, rock stripes or gravel, wet seepage areas, sedge meadows, willow-dwarf birch-sphagnum bogs, limestone and shale substrates +
ferruginous +, gray +  and white +
straight +
ribbonlike +  and flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
obovate +, subcircular +  and elliptic +
1.7 cm17 mm <br />0.017 m <br /> (3 cm30 mm <br />0.03 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
spinulose-serrulate +  and serrulate +
2-7[-10]-carpellate +
villous +  and pilose +
obclavate +
glandular-dotted +
flat;convex;flat;convex +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering mid-late Jun. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
overlapping +
distinct +
Illustrated +
branched +, sympodial +, monopodial +  and branching +
long-trailing +
non-papillate +
cylindrical +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
caducous +  and persistent +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
persistent +  and deciduous +
ferruginous +  and white +
Salix subsect. Myrtilloides +
Salix chamissonis +
Salix sect. Myrtosalix +
species +
pointed +  and rounded +
sympodial +, branching +  and heterophyllous +