Salix atrocinerea

Brotero

Fl. Lusit. 1: 31. 1804.

Common names: Rusty willow
Synonyms: Salix cinerea var. atrocinerea (Brotero) O. Bolòs & Vigo Salix cinerea subsp. oleifolia Macreight
Treatment appears in FNA Volume 7. Treatment on page 133. Mentioned on page 94, 127, 130, 132.

Shrubs, 3–12 m. Stems: branches yellowbrown, gray-brown, or redbrown, not glaucous, pilose or villous to glabrescent, (peeled wood often with many striae, to 45 mm); branchlets gray-brown or yellowbrown, puberulent, pilose, villous, or velvety. Leaves: stipules (sometimes marcescent) foliaceous, apex acute; petiole convex to flat adaxially, 3–15 mm, tomentose, or velvety to glabrescent adaxially; largest medial blade narrowly to broadly elliptic, oblanceolate, obovate, broadly obovate, 29–105 × 14–52 mm, 1.8–4.3 times as long as wide, base cuneate or convex, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal or epilaminal), apex acute, convex, or acuminate, abaxial surface glaucous, tomentose or coarsely villous to glabrescent, hairs (white, sometimes also ferruginous), erect, spreading, or appressed, wavy or curved, adaxial dull or slightly glossy, pubescent or pilose, (hairs white, sometimes also ferruginous); proximal blade margins entire; juvenile blade yellowish green or reddish, glabrous, tomentose, or long-silky abaxially, hairs white, sometimes also ferruginous. Catkins flowering before leaves emerge; staminate stout, 11–16 mm, flowering branchlet 0–5 mm; pistillate densely to loosely flowered, stout, 11–18 mm, flowering branchlet 0–3 mm; floral bract brown, black, or bicolor, 1–3 mm, apex acute, convex, or rounded, abaxially hairy, hairs straight or wavy. Staminate flowers: adaxial nectary narrowly oblong, oblong, or ovate, 0.4–0.9 mm; filaments distinct, glabrous or hairy on proximal 1/2 or basally; anthers yellow, shortly cylindrical or ovoid, 0.6–1 mm. Pistillate flowers: adaxial nectary oblong, square, or obovate, 0.4–0.9 mm, shorter than stipe; stipe 1.2–2.7 mm; ovary pyriform or obclavate, tomentose or short-silky, beak slightly bulged below styles; ovules 12 per ovary; styles 0.2–0.5 mm; stigmas broadly cylindrical, 0.23–0.43–0.63 mm. Capsules 5–7 mm. 2n = 76.


Phenology: Flowering mid Mar-mid May.
Habitat: Wooded wetlands, marshes, sandy beaches, mesic prairies, edges of birch-maple or oak woodlands
Elevation: 0-700 m

Distribution

V7 142-distribution-map.gif

Introduced; Ont., Conn., Maine, Mass., Mo., Nebr., N.J., N.Y., N.C., Pa., R.I., Wis., Europe

Discussion

Hairs on abaxial leaf surfaces of Salix atrocinerea often are spreading to erect, and curly as in S. humilis. Usually, S. atrocinerea can be recognized by its closely spaced parallel tertiary venation. See 76. S. discolor and 81. S. cinerea for further comparative descriptions.

Selected References

None.

Lower Taxa

None.

"-0.63mm" is not declared as a valid unit of measurement for this property.

... more about "Salix atrocinerea"
21 +, 4 +, 1 +, 16 +  and 29 +
coarsely villous +  and glabrescent +
obovate +, square +, oblong +  and ovate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
glossy +  and dull +
ovoid +  and cylindrical +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Rounded (?) +, Convex (?) +, Acute (?) +  and Acuminate (?) +
George W. Argus +
Brotero +
convex +  and cuneate +
Salix sect. Vetrix +
tapering +
reddish +  and yellowish green +
ferruginous +  and white +
long-silky +, tomentose +  and glabrous +
toothed +  and 2-fid +
persistent +
redbrown +, gray-brown +  and yellowbrown +
villous +  and glabrescent +
flowered +  and pistillate +
velvety +, villous +, pilose +  and puberulent +
slender +  and stout +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 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 +
Rusty willow +
Ont. +, Conn. +, Maine +, Mass. +, Mo. +, Nebr. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, Wis. +  and Europe +
0-700 m +
hairy +  and glabrous +
bicolor +, black +  and brown +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
Wooded wetlands, marshes, sandy beaches, mesic prairies, edges of birch-maple or oak woodlands +
ferruginous +  and white +
straight +  and curved +
appressed +, spreading +  and erect +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
2.9 cm29 mm <br />0.029 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
obovate +  and oblanceolate +
1.4 cm14 mm <br />0.014 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
sinuate +, crenate +, entire +  and revolute +
2-7[-10]-carpellate +
short-silky +  and tomentose +
obclavate +  and pyriform +
glandular-dotted +
velvety +  and glabrescent +
convex;flat +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering mid Mar-mid May. +
overlapping +
distinct +
decumbent;erect +
non-papillate +
cylindrical +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
caducous +  and persistent +
distinct +  and connate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
persistent +  and deciduous +
Salix cinerea var. atrocinerea +  and Salix cinerea subsp. oleifolia +
Salix atrocinerea +
Salix sect. Cinerella +
species +
pointed +  and rounded +
sympodial +, branching +  and heterophyllous +