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Salix chamissonis
Andersson
Family:
Salicaceae
Chamisso's Willow
FNA
Resources
George W. Argus, James E. Eckenwalder, Robert W. Kiger in Flora of North America (vol. 7)
Plants
0.03-0.1 m, (dwarf), forming clones by layering.
Stems
long-trailing; branches red-brown, glabrous; branchlets yellow-green, glabrous.
Leaves:
stipules foliaceous; petiole 5-13 mm, (sometimes with 1-2 pairs of spherical glands distally); largest medial blade hypo-stomatous, 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.
2
n
= 114.
Flowering mid-late Jun. 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; 0-1500 m; N.W.T., Yukon; Alaska; e Asia (Chukotka, Commander Islands, Russian Far East, disjunct in Sakhalin).
Salix chamissonis
is disjunct on Attu Island in Alaska.
Open Interactive Map
Click to Display
86 Total Images
This project made possible by National Science Foundation Awards
1601697
,
1600981
,
1601393
,
1600976
,
1601429
,
1601101
,
1601503
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