Salix cordata

Michaux

Fl. Bor.-Amer. 2: 225. 1803.

Common names: Heart-leaf or sand dune willow
Endemic
Synonyms: Salix adenophylla Hooker Salix syrticola Fernald
Treatment appears in FNA Volume 7. Treatment on page 106. Mentioned on page 25, 101, 120, 142.

Plants 0.4–3 m, (often forming clones by layering or stem fragmentation). Stems: branches (sometimes ± brittle at base), redbrown, not glaucous (slightly glossy), tomentose to glabrescent; branchlets redbrown, moderately to very densely villous. Leaves: stipules foliaceous, apex acute or rounded; petiole shallowly grooved adaxially, 1–13 mm, tomentose adaxially; largest medial blade narrowly oblong, or narrowly to broadly elliptic, 33–88 × 13–45 mm, 1.6–3.2 times as long as wide, base cordate, rounded, or convex, margins flat or slightly revolute, serrulate or spinulose-serrulate, apex acuminate, abaxial surface not glaucous, moderately densely villous to glabrescent, midrib remaining hairy, hairs straight or wavy, adaxial dull or slightly glossy, very densely villous to glabrescent, midrib remaining hairy; proximal blade margins entire or serrulate; juvenile blade yellowish green, abaxially villous or midrib long-silky, hairs white. Catkins flowering as leaves emerge; staminate stout, 17–40 × 8–15 mm, flowering branchlet 1–8 mm; pistillate moderately densely flowered, stout or slender, 27–65 × 8–19 mm, flowering branchlet 3–16 mm; floral bract brown, 1–2.6 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy. Staminate flowers: adaxial nectary oblong or narrowly oblong, 0.3–1.3 mm; filaments distinct, glabrous; anthers yellow, (ellipsoid or shortly cylindrical), 0.6–0.8 mm. Pistillate flowers: adaxial nectary oblong or narrowly oblong, 0.4–1.3 mm, about same length as stipe; stipe 0.5–1.4 mm; ovary pyriform or obclavate, glabrous, beak slightly bulged below styles; ovules 11–24 per ovary; styles 0.7–1.6 mm; stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.3–0.36 mm. Capsules 3.6–7 mm. 2n = 38.


Phenology: Flowering mid Apr-early Jul.
Habitat: Sand dunes and beaches
Elevation: 0-200 m

Distribution

V7 105-distribution-map.gif

Nfld. and Labr., Ont., Que., Ill., Ind., Mich., N.Y., Pa., Wis.

Discussion

Salix cordata seems to be rare in Labrador, Newfoundland, and Quebec; the species needs further study in those areas.

Selected References

None.

Lower Taxa

None.

"-0.36mm" is not declared as a valid unit of measurement for this property.

... more about "Salix cordata"
21 +, 4 +, 1 +, 16 +  and 29 +
moderately densely villous +  and glabrescent +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
very densely villous;glabrescent +
glossy +  and dull +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Rounded (?) +, Acute (?) +  and Acuminate (?) +
intermediate +
George W. Argus +
Michaux +
convex +, rounded +  and cordate +
Salix tribe Hastatae +
tapering +
yellowish green +
ferruginous +  and white +
serrulate +  and entire +
toothed +  and 2-fid +
persistent +
flowered +  and pistillate +
slender +  and stout +
0.3 cm3 mm <br />0.003 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
intermediate +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
pendulous +, spreading +  and erect +
Heart-leaf or sand dune willow +
Nfld. and Labr. +, Ont. +, Que. +, Ill. +, Ind. +, Mich. +, N.Y. +, Pa. +  and Wis. +
0-200 m +
0.1 cm1 mm <br />0.001 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
Sand dunes and beaches +
straight +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
3.3 cm33 mm <br />0.033 m <br /> (8.8 cm88 mm <br />0.088 m <br />) +
narrowly oblong or +  and narrowly broadly elliptic +
1.3 cm13 mm <br />0.013 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
spinulose-serrulate +  and serrulate +
revolute +  and flat +
long-silky +  and hairy +
2-7[-10]-carpellate +
obclavate +  and pyriform +
glandular-dotted +
usually convex;flat +
0.1 cm1 mm <br />0.001 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering mid Apr-early Jul. +
Fl. Bor.-Amer. +
overlapping +
distinct +
decumbent;erect +
non-papillate +
cylindrical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
caducous +  and persistent +
distinct +  and connate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
persistent +  and deciduous +
Salix adenophylla +  and Salix syrticola +
Salix cordata +
Salix sect. Hastatae +
species +
rounded +
sympodial +, branching +  and heterophyllous +