Cotoneaster monopyrenus

(W. W. Smith) Flinck & B. Hylmö

Bot. Not. 119: 459. 1966.

Common names: One-stoned cotoneaster
Basionym: Cotoneaster hebephyllus var. monopyrenus W. W. Smith Notes Roy. Bot. Gard. Edinburgh 10: 23. 1917 (as hebephylla var. monopyrena)
Treatment appears in FNA Volume 9. Treatment on page 457. Mentioned on page 451, 452.

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).

Phenology: Flowering May–Jun; fruiting Jul–Nov.
Habitat: Thickets
Elevation: 0–200 m


V9 765-distribution-map.jpg

Introduced; Wash., Asia (China), introduced also in Europe.


L. Lingdi and A. R. Brach (2003) synonymized Cotoneaster monopyrenus with C. hebephyllus (as C. hebephyllus var. hebephyllus).

Selected References


Lower Taxa

... more about "Cotoneaster monopyrenus"
Jeanette Fryer +, Bertil Hylmö† +  and Peter F. Zika +
(W. W. Smith) Flinck & B. Hylmö +
Cotoneaster hebephyllus var. monopyrenus +
One-stoned cotoneaster +
Wash. +, Asia (China) +  and introduced also in Europe. +
0–200 m +
Thickets +
Flowering May–Jun +  and fruiting Jul–Nov. +
Introduced +
Ostinia +
Cotoneaster monopyrenus +
Cotoneaster +
species +