Flora of North America species comparison

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Salix brachycarpa var. brachycarpa
Photo is of parent taxon

short-fruit willow, small-fruit willow
Stems

branches short-silky or villous to glabrescent;

branchlets usually moderately densely long-silky, villous, or woolly.
Leaves

petiole (0.5–)1–3(–4) mm;

largest medial blade narrowly oblong, oblong, narrowly elliptic, elliptic, narrowly oblanceolate, or obovate, (10–)23–30(–40) × 5–16 mm, (1.5–)2.8–3(–4) times as long as wide, base rounded, convex, or subcordate, apex acute or convex, abaxial surface moderately densely villous or long-silky, adaxial pilose, villous, or long-silky to glabrescent, hairs straight or wavy.
Staminate flowers

abaxial nectary 0.5–1.1 mm, adaxial nectary 0.5–1.4 mm;

filaments distinct or connate less than 1/2 their lengths, glabrous, or hairy on proximal 1/2;

anthers ellipsoid or globose, 0.3–0.5 mm.
Pistillate flowers

abaxial nectary (0–)0.4–1.4 mm, adaxial nectary oblong, 0.8–2 mm;

stipe 0–0.6 mm;

ovules 2–5 per ovary;

styles connate to distinct 1/2 their lengths, 0.5–1.5 mm.
Capsules

3–6 mm.
Catkins

staminate 5.3–21 × 4–10 mm, flowering branchlet 0.3–10 mm;

pistillate globose, subglobose, or stout, 6–20 × 4–15 mm, flowering branchlet 0.3–11 mm;

floral bract tawny, 1–3 mm.
2n

= 38.

Salix brachycarpa var. brachycarpa
Phenology Flowering mid Jun–late Aug.
Habitat Moist to mesic open forests, sedge fens, seepage on limestone, scree slopes, gravel floodplains
Elevation 0–4000 m (0–13100 ft)
Distribution
from FNA
CA; CO; ID; MT; NM; OR; UT; WA; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
[BONAP county map]
Discussion

Variety brachycarpa occurs in Nunavut only on islands in James Bay.

Hybrids:

Variety brachycarpa forms natural hybrids with Salix arizonica, S. barclayi, S. boothii, S. candida, S. chlorolepis, S. glauca var. villosa, and S. planifolia.

Placement of specimens from Anticosti Island, Quebec, and North Point, James Bay, Ontario, with densely villous branchlets and relatively short petioles, thought to be hybrids with Salix glauca var. cordifolia, is dubious.

Variety brachycarpa × Salix candida (S. ×argusii B. Boivin) is infrequent in Manitoba, Quebec, and Saskatchewan.

Variety brachycarpa × Salix chlorolepis (S. ×gaspeensis C. K. Schneider) resembles var. brachycarpa but has leaves only slightly pilose and ovaries with hairs only on the beaks (G. W. Argus 1965).

Variety brachycarpa × Salix glauca var. villosa (S. ×wyomingensis Rydberg) is a frequent hybrid in southern Rocky Mountains. It is characterized by stipes 0.3 mm or longer, long-cylindrical catkins, ovaries with relatively long beaks, petioles more than three times the length of buds, and leaves sparsely hairy. The extent and nature of this hybridization needs to be studied (G. W. Argus 1965).

Variety brachycarpa × Salix planifolia “var. monica occurs in Steens Mountains, Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Parent taxa Salicaceae > Salix > Salix brachycarpa
Sibling taxa
S. brachycarpa var. psammophila
Synonyms family SALICACEAE S. brachycarpa var. antimima, S. brachycarpa var. glabellicarpa, S. brachycarpa var. sansonii
Name authority (C. K. Schneider) Raup
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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