Cotoneaster cochleatus
Cotoneaster melanocarpus
Yunnan cotoneaster
dark cotoneaster, dark-fruit cotoneaster
persistent;
petiole 1–4 mm, strigose;
blade obovate to broadly obovate, rarely suborbiculate, 5–14 × 3–9 mm, coriaceous, base obtuse or broadly cuneate, margins slightly revolute, veins 2 or 3, superficial, apex obtuse, sometimes emarginate, abaxial surfaces grayish, reticulate, initially densely strigose-villous, adaxial dark green, shiny, not glaucous, sometimes lightly rugose, glabrescent.
deciduous;
petiole 4–7 mm, tomentose-villous;
blade elliptic to ovate, 33–45 × 20–32 mm, chartaceous, base rounded, margins flat, veins 5–7, superficial, apex acute or obtuse, abaxial surfaces densely silvery-pilose-villous, adaxial green to dark green, dull to slightly shiny, not glaucous, flat between lateral veins, rugose, sparsely pilose;
fall leaves lacking notable color.
on fertile shoots 8–15 mm, usually with 4 leaves, 1(–3)-flowered.
on fertile shoots 25–30 mm with 3 or 4 leaves, 5–13-flowered, pendent, lax.
3–5 mm, strigose.
3–8 mm, sometimes sparsely villous.
7–10 mm diam.;
buds pinkish;
hypanthium cupulate, strigose or pilose-strigose;
sepals: margins villous, apex obtuse or acute, surfaces initially sparsely pilose-strigose;
petals spreading, white, glabrous;
stamens (15–)20, filaments white, anthers dark purple;
styles 2(or 3).
erect, 6–7 mm, open;
hypanthium cupulate, dark reddish brown, glabrous;
sepals: margins erose, apex acute or obtuse, surfaces glabrous, often apically villous;
petals erect, greenish white with pink, red, base slightly darkened, margins white, glabrous;
stamens 20(–22), filaments white, anthers white;
styles 2–4.
bright red to crimson, subglobose, 7–9 × 8–10 mm, slightly shiny, not glaucous, sparsely pilose;
sepals suberect, sparsely strigose;
navel slightly open;
style remnants at apex on small projection.
purple-black, obovoid or globose, 7–9 × 7–9 mm, dull, glaucous with blue tinge, glabrous;
sepals suberect, glabrous or apically villous;
navel open;
style remnants 2/3 from base.
2(or 3).
2–4.
= 68 (Germany).
= 48–52, 68 (Russia).
Cotoneaster cochleatus
Cotoneaster melanocarpus
Cotoneaster cochleatus was treated as a variety of C. microphyllus by L. Lingdi and A. R. Brach (2003); here the two are distinguished at species rank, following H. Nybom et al. (2005). Plants of C. microphyllus have a suberect habit, usually elliptic leaves (rarely broadly obovate) with acute apices, and pomes 6 mm wide; C. cochleatus is always prostrate and has usually obovate leaves (rarely suborbiculate) with blunt apices, and pomes 8–10 mm wide.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Cotoneaster melanocarpus is said to hybridize spontaneously with Sorbus aucuparia in Siberia, forming x\Sorbocotoneaster Pojarkova. The actual Cotoneaster parent is more likely to be a diploid and needs investigation.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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