Salix daphnoides

Villars

Prosp. Hist. Pl. Dauphiné, 51. 1779.

Common names: Violet or daphne willow
Treatment appears in FNA Volume 7. Treatment on page 161. Mentioned on page 94, 162.

Stems: branches redbrown, strongly glaucous (losing glaucescence in age but remaining so at nodes), glabrescent; branchlets yellowbrown, (not glaucous, except in age), usually glabrescent, sometimes sparsely or moderately densely tomentose. Leaves: stipules (often adnate to petioles), usually rudimentary on early ones, late ones lanceolate to ovate, apex acuminate or acute, often adnate to petiole; petiole shallowly grooved, or convex to flat adaxially, 5–18 mm, tomentose to glabrescent adaxially; largest medial blade oblong, lorate, narrowly elliptic, or elliptic, 50–96 (–120) × 1–35 (–40) mm, base cuneate to concave, margins slightly revolute, serrate to crenate, apex acuminate, abaxial surface glaucous, glabrescent or midrib sparsely tomentose, hairs (white, sometimes also ferruginous), spreading, straight, long or short, adaxial slightly glossy, (midrib sparsely tomentose or throughout); proximal blade margins entire, closely gland-dotted; juvenile leaves green, sparsely to moderately densely long-silky abaxially, hairs white, sometimes some ferruginous. Catkins flowering before or just before leaves emerge; staminate stout, 30–47 × 9–20 mm, flowering branchlet 0–1.2 mm; pistillate densely flowered, stout, 20–50 mm, flowering branchlet ca. 1.5 mm; floral bract dark-brown or bicolor, 2.8–3 mm, apex acute to convex, moderately densely hairy throughout, hairs straight. Staminate flowers: adaxial nectary narrowly oblong to flask-shaped, 0.5–1 mm; filaments distinct or connate basally; anthers purple turning yellow, short to long-cylindrical or ellipsoid, 0.5–0.7 mm. Pistillate flowers: adaxial nectary oblong to square, 0.4–0.9 mm; ovary pyriform, beak gradually tapering to styles; ovules 4–6 per ovary; styles 0.6–1.5 mm. Capsules 3.2–4.4 mm. 2n = 38.


Phenology: Flowering late Mar-early May.
Habitat: Disturbed habitats
Elevation: 60-600 m

Distribution

V7 190-distribution-map.gif

Introduced; Alta., Ont., Que., Sask., Mass., Minn., Europe

Discussion

Salix daphnoides is cultivated on prairies for windbreaks and elsewhere for its ornamental catkins. Its stipules are unusual in being attached to petiole bases, even when rudimentary. As the petiole dilates around reproductive buds, the stipules become adnate to it.

Selected References

None.

Lower Taxa

None.

... more about "Salix daphnoides"
21 +, 4 +, 1 +, 16 +  and 29 +
glabrescent +  and glaucous +
oblong +  and square +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
purple turning yellow +
short-cylindrical +  and long-cylindrical +
Acute (?) +  and Convex (?) +
George W. Argus +
Villars +
cuneate +  and concave +
Salix sect. Vetrix +
tapering +
ferruginous +  and white +
toothed +  and 2-fid +
persistent +
glabrescent +  and glaucous +
flowered +  and pistillate +
tomentose +  and glabrescent +
slender +  and stout +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
intermediate +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
pendulous +, spreading +  and erect +
Violet or daphne willow +
Alta. +, Ont. +, Que. +, Sask. +, Mass. +, Minn. +  and Europe +
60-600 m +
connate +  and distinct +
bicolor +  and dark-brown +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pistillate +  and staminate +
bisexual +  and unisexual +
Disturbed habitats +
ferruginous +  and white +
straight +
flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
hemiamphistomatous +, amphistomatous +  and hypostomatous +
9.6 cm96 mm <br />0.096 m <br /> (12 cm120 mm <br />0.12 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
5 cm50 mm <br />0.05 m <br /> (9.6 cm96 mm <br />0.096 m <br />) +
lorate +  and oblong +
0.1 cm1 mm <br />0.001 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
rudimentary +
long-silky +
lanceolate +  and ovate +
serrate +  and crenate +
2-7[-10]-carpellate +
pyriform +
glandular-dotted +
tomentose +  and glabrescent +
convex;flat +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Flowering late Mar-early May. +
Prosp. Hist. Pl. Dauphiné, +
overlapping +
distinct +
decumbent;erect +
non-papillate +
cylindrical +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
caducous +  and persistent +
distinct +  and connate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +  and deciduous +
Salix daphnoides +
Salix sect. Daphnella +
species +
rounded +
sympodial +, branching +  and heterophyllous +
tree +  and shrub +