Compilation
Salix euxina
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Name
Identification
Salix euxina Belyaeva [family SALICACEAE ] (stored under name); Verified by Irina V. Belyaeva, Salix fragilis L. [family SALICACEAE ] Verified by Irina V. Belyaeva, Salix fragilis Kem [family SALICACEAE ]
Related name
- Salix euxina
- Salix fragilis
Common name
- Crack or brittle willow, Flora of North America Vol. 7
Flora
Entry for Salix euxina I. V. Belyaeva [family SALICACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 7,
Names
Salix euxina I. V. Belyaeva [family SALICACEAE], Taxon, 58: 1345. 2009
Salix fragilis Linnaeus var. sphaerica Hryniewiecki [family SALICACEAE]
Treatment Author(s)
George W. Argus
Information
Trees, 6–18 m. Stems: branches highly brittle at base, yellow-green, yellow-brown, or gray-brown, (highly glossy), glabrous; branchlets yellow-green, yellow-brown, or red-brown, (highly glossy), glabrous. Leaves: stipules rudimentary on early ones, rudimentary or foliaceous on late ones, (early deciduous to marcescent), apex acuminate or acute; petiole deeply grooved adaxially (margins usually touching), 6–8.6 mm, with pairs of spherical glands distally, glabrous or puberulent adaxially; largest medial blade hemiamphistomatous or hypostomatous, lanceolate, narrowly oblong, or narrowly elliptic, 60–120 × 14–30 mm, 3.6–6.5 times as long as wide, base convex or rounded, margins flat or slightly revolute, serrate, crenate, or crenulate, apex acute, acuminate, or caudate, abaxial surface (not glaucous), glabrous, adaxial slightly or highly glossy, glabrous; proximal blade margins entire; juvenile blade yellowish green or reddish, glabrous. Catkins: staminate 24–40 × 7–15 mm, flowering branchlet 12–15 mm; pistillate moderately densely flowered, stout, 24–35 mm, flowering branchlet 12–15 mm; floral bract (greenish or tawny), 0.8–1.3 mm, apex convex or rounded, entire or erose, abaxially hairy, hairs straight or wavy. Staminate flowers: abaxial nectary present, adaxial nectary oblong, 0.3–0.6 mm, nectaries distinct; filaments distinct or connate less than 1/2 their lengths, hairy at base; anthers ellipsoid, 0.4–0.5 mm. Pistillate flowers: adaxial nectary oblong or square, 0.3–0.6 mm, shorter than stipe; stipe 0.6–1.2 mm; ovary pyriform, beak gradually tapering to styles; styles connate, 0.3–0.5 mm; stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.3–0.5 mm. Capsules 3–5 mm. 2n = 76.
Phenology
late spring
Distribution
nnw Asiaintroduced also in Europe.Canada Ont.Canada Que.
Discussion
Distribution of Salix euxina (formerly S. fragilis) in the flora area is uncertain. It may occur throughout southern Canada and the United States; often known as the cultivar “Bullata,” it rarely escapes. Salix euxina is native to the northern Black Sea and the Transcaucausian regions.
Native/Introduced
introduced;