Cotoneaster lucidus |
Cotoneaster monopyrenus |
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cotonéaster à feuilles aiguës, hedge cotoneaster, shiny cotoneaster |
one-stone cotoneaster |
|
Habit | Shrubs, 1.5–2.5 m. Stems erect, arching, or spreading; branches spiraled or distichous, dense, greenish gray to maroon, not lenticellate, initially strigose. | Shrubs or trees, 3–5 m. Stems loosely erect, arching, spreading; branches spiraled, maroon, lenticellate, initially pilose-strigose. |
Leaves | deciduous; petiole 4–8 mm, strigose; blade elliptic or ovate, sometimes obovate, 28–50(–65) x 17–32(–40) mm, chartaceous, base cuneate or rounded, margins flat, not revolute, veins 3–5, sunken, apex short-acuminate or acute, abaxial surfaces green, sparsely pilose-strigose, adaxial dark green, intensely shiny, not glaucous, flat or scarcely bulging between lateral veins, slightly rugose, initially sparsely strigose; fall leaves intense dark red, yellow, or orange. |
deciduous; petiole 5–9 mm, pilose-strigose; blade elliptic, broadly elliptic, or broadly obovate, sometimes suborbiculate, 25–58 × 15–40 mm, subcoriaceous, base obtuse or cuneate, margins flat, veins 4–6, slightly sunken, apex obtuse or truncate, seldom acute, abaxial surfaces color not recorded, reticulate, tomentose-pilose, later thinning, adaxial dark green, dull, coating not recorded, flat between lateral veins, glabrescent; fall leaves pale yellowish green. |
Inflorescences | on fertile shoots 25–50 mm with 4 or 5 leaves, 2–6(–15)-flowered, lax. |
on fertile shoots 30–50 mm with 3–4 leaves, 7–20-flowered, lax. |
Pedicels | 5–12 mm, sparsely pilose. |
2–5 mm, pilose-strigose. |
Flowers | 5.5–8 mm, largely open; hypanthium cupulate, base sparsely pilose, glabrescent; sepals: margins villous, apex acute or acuminate, surfaces glabrous; petals erect, pinkish white, sometimes green-tinged, base dark pink or reddish; stamens 18–20, filaments pink, base dark pink, anthers white; styles 2 or 3. |
10–12 mm diam., buds white, hypanthium campanulate to cupulate, sparsely pilose-strigose; sepals: margins reddish, villous, borders maroon-tipped, membranous, apex acute, acuminate, or obtuse, surfaces sparsely pilose-strigose; petals spreading, white, sometimes with hair tuft; stamens (15–)20, filaments white; anthers purple to blackish purple; styles 1(or 2). |
Pomes | black, broadly obovoid to obovoid, rarely ellipsoid or globose, (8–)9.5–12.1 x (7.5–)8.7–11.8 mm, shiny, glaucous, sparsely pilose; sepals flat, margins villous, sparsely pilose; navel open; style remnants 2/3 from base. |
dark red or ruby to maroon, maturing dark purple or purple-black, obovoid, rarely globose or ellipsoid, 9–12.5 × 8.5–11.5 mm, dull, glaucous, glabrous; sepals flat, margins sparsely hairy, sparsely hairy to glabrate; navel open; style remnants at apex. |
Pyrenes | 2 or 3. |
1(or 2). |
2n | = 68 (Germany). |
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Cotoneaster lucidus |
Cotoneaster monopyrenus |
|
Phenology | Flowering Mar–Jul (sometimes reflowering in Sep); fruiting Jul–Oct. | Flowering May–Jun; fruiting Jul–Nov. |
Habitat | Deciduous or coniferous forests, ravines, lakeshores, forested dunes, thickets, edges | Thickets |
Elevation | 0–2300 m (0–7500 ft) | 0–200 m (0–700 ft) |
Distribution |
CO; ID; IN; MN; WA; WY; AB; BC; MB; ON; QC; SK; Asia (Mongolia, Siberian Russia) [Introduced in North America; introduced also in Europe] |
WA; Asia (China) [Introduced in North America; introduced also in Europe] |
Discussion | Leaf glossiness is often retained on herbarium specimens and is visible with strong lighting and magnification. Plants of Cotoneaster acutifolius of China and Mongolia are seldom seen in cultivation. Reports of it naturalized in North America are here referred to the commonly cultivated C. lucidus, which tolerates continental winters. No specimens have been seen to support reports of the latter from Montana and Oregon. Some reports of C. melanocarpus from Alberta and Manitoba (H. J. Scoggan 1978–1979, part 3) are here referred to C. lucidus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
L. Lingdi and A. R. Brach (2003) synonymized Cotoneaster monopyrenus with C. hebephyllus (as C. hebephyllus var. hebephyllus). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 463. | FNA vol. 9, p. 457. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. acutifolius var. lucidus | C. hebephyllus var. monopyrenus |
Name authority | Schlechtendal: Linnaea 27: 541. (1854) | (W. W. Smith) Flinck & B. Hylmö: Bot. Not. 119: 459. (1966) |
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