Salix chlorolepis

Fernald

Rhodora 7: 186. 1905.

Common names: Green-bract willow
EndemicConservation concern
Treatment appears in FNA Volume 7. Treatment on page 85. Mentioned on page 61, 84, 87.

Plants 0.15–0.2 m, not clonal. Stems erect; branches redbrown, (weakly glaucous), glabrous; branchlets yellowbrown, glabrous. Leaves: stipules absent or rudimentary; petiole (deeply to shallowly grooved adaxially), 1–3.5 mm; largest medial blade elliptic, oblanceolate, or obovate, 14–33 × 7–12 mm, 1.9–3.4 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, ciliate, apex acute, convex, or rounded, abaxial surface glabrous, adaxial slightly glossy, glabrous; proximal blade margins entire; juvenile blade (sometimes reddish), glabrous, ciliate. Catkins: staminate 6.5 × 5–8 mm, flowering branchlet 1–3 mm; pistillate densely flowered, stout or subglobose, 7–12 × 3–6 mm, flowering branchlet 1.8–12 mm; floral bract tawny, brown, or greenish, 1–2.6 mm, apex broadly rounded to retuse, entire, abaxially glabrous. Staminate flowers: abaxial nectary 0.3–0.4 mm, adaxial nectary oblong, 0.5–0.8 mm, nectaries distinct; filaments distinct, glabrous; anthers ellipsoid, 0.4–0.6 mm. Pistillate flowers: adaxial nectary narrowly oblong, 0.9–1.6 mm, longer than stipe, nectaries distinct or connate and shallowly cupshaped; stipe 0–0.4 mm; ovary pyriform, glabrous, beak abruptly tapering to or slightly bulged below styles; ovules 8–10 per ovary; styles connate to distinct 1/2 their lengths, 0.5–1.3 mm; stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.3–0.6 mm. Capsules 3.6–6 mm. 2n = 38.


Phenology: Flowering Jul-early Aug.
Habitat: Wet Sphagnum bog on alpine, serpentine barrens
Elevation: 1000-1200 m

Discussion

Of conservation concern.

Salix chlorolepis, known from Mt. Albert, is characterized by its general glabrousness. It seems to have a relationship with S. brachycarpa similar to that of S. raupii to S. glauca. Both may have originated through mutation or hybridization.

Hybrids:

Salix chlorolepis forms natural hybrids with S. brachycarpa var. brachycarpa.

Salix chlorolepis × S. pedicellaris is a putative hybrid that has relatively small, glabrous leaves. Both parents occur together on Mt. Albert, Quebec.

Selected References

None.

Lower Taxa

None.

... more about "Salix chlorolepis"
connate +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
red turning yellow +
ellipsoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
George W. Argus +
Fernald +
convex +  and cuneate +
Myrtilloides +
tapering +
toothed +  and 2-fid +
persistent +
subglobose +  and globose +
0.18 cm1.8 mm <br />0.0018 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
flowered +, pistillate +  and staminate +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
pendulous +, spreading +  and erect +
subglobose +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Green-bract willow +
1000-1200 m +
greenish +, brown +  and tawny +
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 +
spherical +
Wet Sphagnum bog on alpine, serpentine barrens +
white and ferruginous +  and white +
long-silky +
cylindrical +, ribbonlike +  and flattened +
unbranched +  and spicate +
subterminal +  and axillary +
membranaceous +
1.4 cm14 mm <br />0.014 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
obovate +, oblanceolate +  and elliptic +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
arranged +  and alternate +
marcescent +
deciduous +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
revolute +  and flat +
connate +  and distinct +
2-7[-10]-carpellate +
pyriform +
glandular-dotted +
flat;convex;flat;convex +
Flowering Jul-early Aug. +
overlapping +
distinct +
Endemic +  and Conservation concern +
branched +, sympodial +, monopodial +  and branching +
non-papillate +
cylindrical +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
caducous +  and persistent +
connate +  and distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
persistent +  and deciduous +
ferruginous +  and white +
Salix chlorolepis +
Salix sect. Myrtilloides +
species +
rounded +
sympodial +, branching +  and heterophyllous +
plant +  and not clonal +