Cotoneaster monopyrenus |
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one-stone cotoneaster |
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Habit | Shrubs or trees, 3–5 m. Stems loosely erect, arching, spreading; branches spiraled, maroon, lenticellate, initially pilose-strigose. |
Leaves | 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 30–50 mm with 3–4 leaves, 7–20-flowered, lax. |
Pedicels | 2–5 mm, pilose-strigose. |
Flowers | 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 | 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 | 1(or 2). |
Cotoneaster monopyrenus |
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Phenology | Flowering May–Jun; fruiting Jul–Nov. |
Habitat | Thickets |
Elevation | 0–200 m (0–700 ft) |
Distribution |
WA; Asia (China) [Introduced in North America; introduced also in Europe] |
Discussion | 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. 457. |
Parent taxa | |
Sibling taxa | |
Synonyms | C. hebephyllus var. monopyrenus |
Name authority | (W. W. Smith) Flinck & B. Hylmö: Bot. Not. 119: 459. (1966) |
Web links |