Salix calcicola

Fernald & Wiegand

Rhodora 13: 251. 1911.

Common names: Limestone willow
IllustratedEndemic
Basionyms: Salix richardsonii var. macouniana Bebb Bot. Gaz. 14: 50, plate 9. 1889
Synonyms: Salix lanata subsp. calcicola (Fernald & Wiegand) Hultén
Treatment appears in FNA Volume 7. Treatment on page 143. Mentioned on page 95, 144, 145, 147.

Plants 0.05–1.3 m, (gnarled, sometimes forming clones by layering). Stems: branches yellowbrown, gray-brown, orred-brown, not to weakly glaucous (dull or slightly glossy), villous to glabrescent; branchlets yellowbrown or redbrown, moderately densely to sparsely villous, (buds caprea or arctica-type, scale inner membranaceous layer free, separating from outer layer in var. calcicola). Leaves: stipules (sometimes marcescent), foliaceous, (1–6–14 mm, 1.1–2–4.4 times as long as wide, usually ovate, oval, or narrowly elliptic, flat when pressed), apex acute, convex, or rounded; petiole shallowly grooved, or convex to flat adaxially, 1.5–3.8–9 mm, villous or pilose adaxially; largest medial blade (sometimes hemiamphistomatous), narrowly to broadly elliptic or subcircular, 16–31.5–61 × 10–21.8–44 mm, 0.7–1.5–2.6 times as long as wide, base rounded or convex, sometimes cordate or cuneate, margins (sometimes purplish), flat, entire or serrulate, apex acuminate, acute, or rounded, abaxial surface glaucous, sparsely villous or pilose to glabrescent, hairs straight, adaxial dull or slightly glossy, sparsely villous or pilose; proximal blade margins entire; juvenile blade reddish or yellowish green, moderately densely villous abaxially, hairs white. Catkins flowering before leaves emerge; staminate (no data on var. glandulosior) stout, 18–45 × 13–21 mm, flowering branchlet 0 mm; pistillate (no data on var. glandulosior except flowering branchlet length) densely flowered, stout, 32–75 (–100 in fruit) × 12–25 mm, flowering branchlet 0–5 mm; floral bract brown or black, 1.2–3.2 mm, apex rounded or acute, abaxially hairy, hairs straight. Staminate flowers: adaxial nectary oblong or narrowly oblong, 0.5–1.2 mm; filaments distinct, glabrous; anthers purple turning yellow, ellipsoid or shortly cylindrical, 0.5–0.7 mm. Pistillate flowers: adaxial nectary oblong, 0.2–1.1 mm, longer than or equal to stipe (rarely shorter); stipe 0.2–1.2 mm; ovary pyriform or obclavate, beak gradually tapering to styles; ovules 13–20 per ovary; styles 0.9–3 mm; stigmas broadly cylindrical, 0.2–0.56 mm. Capsules 4–8 mm.

Distribution

V7 157-distribution-map.gif

Alta., Man., Nunavut, Ont., Que., Colo.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Styles 1.6-3 mm; largest medial blades: margins often purplish, teeth or glands 6-18 per cm; stipes 0.2-1.2 mm; e Canadian Arctic. Salix calcicola var. calcicola
1 Styles 0.9-1.8 mm; largest medial blades: margins green, teeth or glands 5-22 per cm; stipes 0.3-0.6 mm; Alberta, Colorado. Salix calcicola var. glandulosior

"-44mm" is not declared as a valid unit of measurement for this property."-9mm" is not declared as a valid unit of measurement for this property.

... more about "Salix calcicola"
21 +, 4 +, 1 +, 16 +  and 29 +
114 +, 95 +, 76 +, 57 +  and 38 +
pilose +  and glabrescent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
glossy +  and dull +
purple turning yellow +
cylindrical +  and ellipsoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Acute (?) +, Rounded (?) +, Acuminate (?) +  and Convex (?) +
George W. Argus +
Fernald & Wiegand +
cuneate +, cordate +, convex +  and rounded +
Salix richardsonii var. macouniana +
tapering +
yellowish green +  and reddish +
ferruginous +  and white +
toothed +  and 2-fid +
persistent +
orred-brown +, gray-brown +  and yellowbrown +
villous +  and glabrescent +
flowered +  and pistillate +
slender +  and stout +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
intermediate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
pendulous +, spreading +  and erect +
Limestone willow +
Alta. +, Man. +, Nunavut +, Ont. +, Que. +  and Colo. +
black +  and brown +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
straight +
flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
oblong +  and narrowly broadly elliptic oblanceolate obovate or broadly obovate +
arranged +  and alternate +
marcescent +
deciduous +
0.7-1.5-2.6 +
16mm;31.5-61mm +
subcircular +  and elliptic +
serrulate +  and entire +
2-7[-10]-carpellate +
obclavate +  and pyriform +
glandular-dotted +
pilose +  and villous +
convex;flat +
overlapping +
distinct +
Illustrated +  and Endemic +
decumbent;erect +
non-papillate +
cylindrical +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.056 cm0.56 mm <br />5.6e-4 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
caducous +  and persistent +
distinct +  and connate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +  and deciduous +
Salix lanata subsp. calcicola +
Salix calcicola +
Salix sect. Lanatae +
species +
pointed +  and rounded +
sympodial +, branching +  and heterophyllous +