Cotoneaster lucidus |
Cotoneaster frigidus |
|
---|---|---|
cotonéaster à feuilles aiguës, hedge cotoneaster, shiny cotoneaster |
tree 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, 5–15 m. Stems loosely erect, spreading; branches spiraled, dark brown, initially downy. |
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 5–8 mm, densely villose to tomentose; blade narrowly elliptic (to lance-elliptic or narrowly obovate), 55–150 × 19–55 mm, membranous, base cuneate, margins flat, veins 6–10, superficial or slightly sunken, apex acute, abaxial surfaces color not recorded, villous at least near midvein, adaxial green, dull, coating not recorded, flat between lateral veins, glabrous except villous midrib. |
Inflorescences | on fertile shoots 25–50 mm with 4 or 5 leaves, 2–6(–15)-flowered, lax. |
on fertile shoots 60–80 mm with 2–4 leaves, 20–60-flowered, lax. |
Pedicels | 5–12 mm, sparsely pilose. |
length not recorded, densely tomentose. |
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. |
6–7 mm diam.; buds white; hypanthium cupulate [subcylindric], tomentose; sepals: margins tomentose, apex acute, surfaces densely villous; petals spreading, white, glabrous or with hair tuft; stamens 20, filaments white, anthers purple; styles 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. |
bright red, subglobose to ellipsoid, 4–6 × 4–5 mm, shiny, not glaucous, sparsely villous; sepals erect or ascending, margins tomentose, densely villous; navel hidden; style remnants near apex. |
Pyrenes | 2 or 3. |
2. |
2n | = 68 (Germany). |
= 34 (India). |
Cotoneaster lucidus |
Cotoneaster frigidus |
|
Phenology | Flowering Mar–Jul (sometimes reflowering in Sep); fruiting Jul–Oct. | Flowering May–Jun; fruiting Sep–Oct. |
Habitat | Deciduous or coniferous forests, ravines, lakeshores, forested dunes, thickets, edges | North-facing canyon slopes |
Elevation | 0–2300 m (0–7500 ft) | 0–500 m (0–1600 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] |
CA; Asia (Himalaya Mountains) [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.) |
Reports of Cotoneaster frigidus from Washington (F. C. Weinmann 2000; A. L. Jacobson 2001; J. T. Kartesz 2006) are here referred to C. gamblei, plants having larger fruits tending to be obovoid, less densely pubescent inflorescences, and with thicker, more persistent leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 463. | FNA vol. 9, p. 456. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. acutifolius var. lucidus | |
Name authority | Schlechtendal: Linnaea 27: 541. (1854) | Wallich ex Lindley: Edwards's Bot. Reg. 15: plate 1229. (1829) |
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