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
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 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. 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, Commander Islands, Russian Far East, disjunct in Sakhalin).

Discussion

Salix chamissonis is disjunct on Attu Island in Alaska.

Selected References

None.

Lower Taxa

None.

Facts about "Salix chamissonis"
AuthorGeorge W. Argus +
AuthorityAndersson in A. P. de Candolle and A. L. P. P. de Candolle +
BasionymsSalix sect. Chamaetia +
Common nameChamisso willow +
DistributionN.W.T. +, Yukon +, Alaska +, e Asia (Chukotka +, Commander Islands +, Russian Far East + and disjunct in Sakhalin). +
Elevation0-1500 m +
HabitatArctic-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 +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorJohn Myers +
PhenologyFlowering mid-late Jun. +
Publication titlein A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Publication year1868 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V7/V7 69.xml +
SynonymsSalix subsect. Myrtilloides +
Taxon familySalicaceae +
Taxon nameSalix chamissonis +
Taxon parentSalix sect. Myrtosalix +
Taxon rankspecies +
VolumeVolume 7 +