Salix cinerea
Salix caroliniana
gray willow, large gray or gray willow, large gray willow
Carolina or coastal plain willow, coastal plain willow
stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;
petiole convex to flat adaxially, 4–15 mm, tomentose adaxially;
largest medial blade elliptic, broadly elliptic, oblanceolate, or obovate, 65–105 × 22–52 mm, 2–3 times as long as wide, base convex or cuneate, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal), apex acuminate or convex, abaxial surface glaucous, tomentose, hairs erect or spreading, curly, adaxial dull or slightly glossy, pubescent or tomentose;
proximal blade margins entire;
juvenile blade yellowish green, sparsely to densely tomentose abaxially, hairs white.
stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex convex to acute;
petiole (with spherical glands distally), (3–)4.5–14(–22) mm, tomentose or pilose adaxially;
largest medial blade lorate or lanceolate to narrowly lanceolate, (50–)75–115(–220) × 10–22(–35) mm, 5–10 times as long as wide, base usually convex or cuneate, sometimes rounded to cordate, margins serrate or serrulate, apex acuminate, acute, or caudate, abaxial surface glabrous or sparsely tomentose on midribs, hairs white and/or ferruginous, wavy, adaxial highly glossy, glabrous or pilose, hairs white and/or ferruginous;
proximal blade margins entire or serrulate;
juvenile blade glabrous, or moderately densely tomentose or silky abaxially, hairs white and ferruginous.
adaxial nectary oblong or ovate, 0.5–1 mm;
filaments distinct, glabrous or hairy basally;
anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.7–1 mm.
abaxial nectary 0.3–0.5 mm, adaxial nectary oblong to narrowly oblong, 0.3–0.6 mm, nectaries distinct;
stamens 4–7;
filaments (sometimes connate less than 1/2 their lengths), hairy basally;
anthers 0.4–0.6 mm.
adaxial nectary oblong or square, 0.4–1 mm, shorter than stipe;
stipe 1.2–2.7 mm;
ovary pyriform, long-silky, beak slightly bulged below styles;
ovules 12 per ovary;
styles 0.2–0.5 mm;
stigmas slenderly or broadly cylindrical, 0.3–0.6 mm.
adaxial nectary oblong, square, or ovate, 0.3–0.7 mm;
stipe 1.3–5.3 mm;
ovary pyriform to obclavate, beak slightly bulged below styles;
ovules 12–16 per ovary;
styles (sometimes distinct distally), 0.1–0.2 mm;
stigmas 0.16–0.2–0.28 mm.
5–5.6 mm.
4–6 mm.
flowering before leaves emerge; staminate stout or subglobose, 26–39 × 12–26 mm, flowering branchlet 0–5 mm; pistillate densely flowered, stout or subglobose, 27–54(–75 in fruit) × 4–15 mm, flowering branchlet 1–5(–10) mm;
floral bract dark brown, black, or bicolor, 2–3 mm, apex acute or convex, abaxially hairy, hairs straight.
staminate 28–97 × 5–11 mm, flowering branchlet 4–25 mm; pistillate 33–93 × 7–15 mm, flowering branchlet 3–35 mm;
floral bract 1–3 mm, apex acute or rounded, entire or erose, abaxially sparsely hairy, hairs wavy; pistillate bract deciduous after flowering.
= 76.
Salix cinerea
Salix caroliniana
The Ohio occurrence of Salix cinerea is based on information from T. Cooperrider (pers. comm.).
Salix cinerea and S. atrocinerea are very closely related. Their occurrence in the flora area, as naturalized introductions, is not well understood, probably because they usually are introduced under the name S. caprea, and that species often is not treated in North American floristic literature (e.g., C. K. Schneider 1921; M. L. Fernald 1950). They probably are introductions of long-standing brought to the New World for their value as ornamentals and bee-plants. Salix atrocinerea was first documented in the southeastern United States (G. W. Argus 1986) after plants with ferruginous hairs and prominently striate wood were found in North Carolina; since that time, it has been found in other states and provinces. In the northeastern states, S. atrocinerea and S. cinerea are thought to be invasive species. The species do reproduce by seed and hundreds of seedlings were observed in a drained reservoir (A. Zinovjev, pers. comm.) and on sandy pond shores (T. Rawinski, pers. comm.), where they are thought to compete with native species.
The presence of long, prominent, striae on the peeled wood of 4–5 year old branches is commonly used in European literature (K. H. Rechinger 1993; A. K. Skvortsov 1999) to separate Salix cinerea and S. atrocinerea from S. caprea etc., in which the wood is smooth or with fewer, shorter striae. In the flora area, long striae also occur in S. bebbiana, S. discolor, and S. humilis, but usually they are not as long as or as prominent in S. cinerea and S. atrocinerea. Some floras (e.g., F. Martini and P. Paiero 1988) use the relative prominence of striae to separate S. cinerea and S. atrocinerea, but their separation remains difficult. The presence of ferruginous hairs on the leaves of S. atrocinerea is the best diagnostic characteristic, but they are not always present or easily observed. For a comparison of these species, see the key to species under subg. Vetrix. For further discussion of morphologies, see Salix ×smithiana Willdenow [p. 132] and 76. S. discolor.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Hybrids:
Salix caroliniana forms natural hybrids with S. nigra. Hybrids with S. amygdaloides have been reported (N. M. Glatfelter 1898); no convincing specimens have been seen.
Salix caroliniana × S. nigra: This hybrid is characterized by stipes to 1.3 mm and leaves glaucous; it probably occurs wherever the two parents come into contact. In the southeastern United States, it occurs from northern Florida to West Virginia and Maryland with intergradation mainly on the Atlantic coastal plain from northern Florida and southern Georgia (G. W. Argus 1986). Reports (N. M. Glatfelter 1898) of it from the vicinity of St. Louis, Missouri, are unconfirmed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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