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cotoneaster, Tengyueh cotoneaster

Habit Shrubs, 2–2.5 m; crown ± rounded.
Stems

erect, arching, long;

branches distichous, grayish maroon, initially densely strigose.

Leaves

deciduous (sometimes tardily so on vigorous shoots);

petiole 1–4 mm, strigose;

blade ovate or elliptic, (25–)30–50(–61) x 12–32 mm, chartaceous, base cuneate or rounded, margins flat, veins 3–5, deeply sunken, apex acuminate or acute, abaxial surfaces grayish green, villose-strigose or sparsely to moderately gray-tomentose, adaxial green to dark green, shiny, not glaucous, flat or faintly bulging between lateral veins, pilose-strigose;

fall leaves yellow to orange.

Inflorescences

on fertile shoots 25–40 mm with (3 or)4 leaves, 3–7(–9)-flowered, compact.

Pedicels

1–4 mm, densely strigose.

Flowers

erect or ascending, [5–]6–8 mm, opening small;

hypanthium cupulate, strigose;

sepals: margins villous, borders reddish brown, glabrous, apex acuminate or cuspidate, surfaces strigose;

petals erect-incurved, pink to red, base dark pink or red, rarely dark red or maroon, margins white;

stamens 20 or 21, filaments pink or pale pink, whitish distally, anthers white;

styles (2 or)3–5.

Pomes

spreading or pendent, bright red, broadly obovoid or subglobose, rarely oblong-obovoid, 6.3–10.4 × 5.8–9.1 mm, shiny, not glaucous, sparsely strigose;

sepals flat or suberect, strigose;

navel closed;

style remnants 2/3 from base.

Pyrenes

(2 or)3–5.

2n

= 68 (Germany).

Cotoneaster tengyuehensis

Phenology Flowering May–Jun; fruiting Sep–Feb.
Habitat Thickets, creek banks, open forests, edges
Elevation 0–50 m (0–200 ft)
Distribution
from FNA
WA; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
Discussion

L. Lingdi and A. R. Brach (2003) confused Cotoneaster tengyuehensis with C. glomerulatus W. W. Smith, a species with small fruits 5 mm in diameter, with 5 pyrenes and styles, and slightly smaller leaves to 40–50 mm. In the flora area, C. tengyuehensis is more likely to be mistaken for C. franchetii, which is a true evergreen with orange-red, obovate to obconic fruits, and pink to purple stamens. Naturalized shrubs of C. tengyuehensis drop their foliage in midwinter.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 9, p. 465.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster
Sibling taxa
C. adpressus, C. atropurpureus, C. cochleatus, C. conspicuus, C. crispii, C. dammeri, C. dielsianus, C. divaricatus, C. fangianus, C. franchetii, C. frigidus, C. gamblei, C. hjelmqvistii, C. hodjingensis, C. horizontalis, C. integrifolius, C. lacteus, C. lucidus, C. magnificus, C. melanocarpus, C. miniatus, C. monopyrenus, C. nitens, C. pannosus, C. qungbixiensis, C. rehderi, C. salicifolius, C. simonsii, C. sternianus, C. transens, C. vestitus, C. villosulus, C. ×suecicus
Name authority J. Fryer & B. Hylmö: Watsonia 21: 338. (1997)
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