Cotoneaster dammeri |
Cotoneaster salicifolius |
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bearberry cotoneaster |
cotoneaster, willow-leaf cotoneaster |
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Habit | Shrubs, to 0.2 m. Stems carpeting or procumbent, rooting, to 1.5 m, pliant; branches distichous or spiraled, greenish to light brown, densely lenticellate, initially pilose-strigose. | Shrubs or trees, 1–8 m. Stems erect or arching [prostrate]; branches spiraled or distichous, arching, maroon, slender, initially tomentose-strigose. |
Leaves | persistent; petiole 2–9 mm, villose-strigose; blade elliptic or obovate, rarely suborbiculate, 13–43 × 6–26 mm, coriaceous, base cuneate or obtuse, margins revolute, veins 5–8, sunken, apex obtuse or acute, rarely retuse, abaxial surfaces grayish green, reticulate, initially villous, adaxial light green to green, intensely shiny, not glaucous, reticulate-rugose, not bulging between lateral veins, often single hairs on midrib. |
persistent; petiole 3–8 mm, tomentose-strigose; blade narrowly elliptic to elliptic-lanceolate, 30–90 × 8–23 mm, coriaceous, base cuneate, margins strongly revolute, veins 7–12, deeply sunken, apex gradually tapered, acute or acuminate, abaxial surfaces grayish green, initially densely villous, becoming glabrous or glabrate, adaxial dark green, shiny, not glaucous, bulging between lateral veins, sparsely pilose initially. |
Inflorescences | on fertile shoots 20–40 mm, usually with 4 leaves, (1 or)2 or 3(or 4)-flowered, compact. |
on fertile shoots 20–60 mm with 3 or 4 leaves, 10–50-flowered, compact. |
Pedicels | 4–15 mm, thin, villose-strigose. |
0.5–3(–4 mm), densely strigose-villous. |
Flowers | slightly pendent, 10–12 mm diam.; buds white; hypanthium cupulate, sparsely pilose-strigose; sepals: margins sparsely villous, apex obtuse or acute, surfaces sparsely pilose-strigose; petals spreading, white, glabrous; stamens 20, filaments white, anthers purple-black; styles 4 or 5. |
(5–)6–9 mm diam.; buds white; hypanthium funnelform, pilose; sepals: margins sparsely villous, apex acute, surfaces sparsely pilose; petals spreading, white, glabrous; stamens 20, filaments white, anthers red-purple; styles 2 or 3(or 4). |
Pomes | bright red, obovoid to broadly obovoid, rarely globose, 6–10 × 6–8 mm, shiny, not glaucous, glabrous; sepals suberect, glabrous; navel open; style remnants at apex. |
bright red (or with hint of crimson), broadly obovoid to globose, (5–)6–8.5 x (5–)6–8 mm, shiny, not glaucous, sparsely pilose; sepals depressed or flat, sparsely pilose; navel slightly open; style remnants at apex. |
Pyrenes | 4 or 5. |
2 or 3(or 4). |
2n | = 34 (Germany). |
= 34 (Germany). |
Cotoneaster dammeri |
Cotoneaster salicifolius |
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Phenology | Flowering May–Jun; fruiting Sep–Apr. | Flowering May–Jun; fruiting Oct–Apr. |
Habitat | Disturbed forests, grassy banks, rock roadcuts, urban waste ground | Thickets, mossy cliffs, cracks in walls, lakeshores, urban waste ground |
Elevation | 0–200 m (0–700 ft) | 0–200 m (0–700 ft) |
Distribution |
WA; BC; Asia (China) [Introduced in North America; introduced also in Europe] |
WA; BC; Asia (China: Sichuan, Xizang) [Introduced in North America; introduced also in Europe] |
Discussion | L. Lingdi and A. R. Brach (2003) included as varieties of Cotoneaster salicifolius several taxa that here are considered full species, such as C. henryanus (C. K. Schneider) Rehder & E. H. Wilson, C. hylmoei Flinck & J. Fryer, and C. rugosus E. Pritzel. A horticultural hybrid, presumably between Cotoneaster dammeri and C. salicifolius, is known in gardens as the cultivar Cotoneaster 'Hybridus Pendulus' and was recently collected as a local escape from cultivation in King County, Washington. This hybrid would key to C. x\suecicus but differs in its limp branching, much larger leaves (20–80 × 10–30 mm) and more numerous and smaller diameter flowers (9–11 mm wide). The foliage of the hybrid closely resembles C. salicifolius, but it has fewer (4–13) and larger flowers and is less than 1 m in height. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 9, p. 459. | FNA vol. 9, p. 454. |
Parent taxa | ||
Sibling taxa | ||
Name authority | C. K. Schneider: Ill. Handb. Laubholzk. 1: 761, figs. 429 h–k. (1906) | Franchet: Nouv. Arch. Mus. Hist. Nat., sér. 2, 8: 225. (1885) |
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