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cotoneaster, Tengyueh cotoneaster

few-flower cotoneaster, Kokonor cotoneaster

Habit Shrubs, 2–2.5 m; crown ± rounded. Shrubs, 1.5–3 m. Stems erect, becoming pendulous; branches divaricate, red-brown, initially strigose.
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.

deciduous;

petiole 2–3(–4) mm, pilose-strigose;

blade elliptic or obovate, sometimes broadly elliptic, broadly ovate, or suborbiculate, 8–28 × 9–23 mm, chartaceous, base rounded, margins flat, veins 3–5, superficial, apex obtuse or acute and mucronulate, abaxial surfaces pale green, initially densely pilose-strigose, adaxial initially reddish, soon bright green, dull to slightly shiny, not glaucous, flat between lateral veins, glabrous;

fall leaves turning bright red and gold.

Inflorescences

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

on fertile shoots 15–30 mm with 3–4(–5) leaves, 1–3(or 4)-flowered, compact.

Pedicels

1–4 mm, densely strigose.

2–4 mm, glabrescent.

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.

6–7 mm, open;

hypanthium widely cupulate, sparsely pilose;

sepals: margins tomentose, apex obtuse, acute, or apiculate, surfaces sparsely pilose;

petals erect-incurved, pink-tinged with purple-maroon or pink-red, base drying to purple-black, margins white, glabrous;

stamens 10–14(or 15), filaments pink, sometimes red-purple, distally dark pink, anthers pink or white, margins pale crimson, drying to dark red;

styles 2(or 3).

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.

purple-black, ellipsoid or obovoid to globose, (7–)8–9.5 × 6.5–8 mm, shiny, slightly glaucous, sparsely pilose to glabrate;

sepals erect or suberect, sparsely pilose;

navel open;

style remnants 3/4 from base.

Pyrenes

(2 or)3–5.

2(or 3).

2n

= 68 (Germany).

= 68 (Germany).

Cotoneaster tengyuehensis

Cotoneaster nitens

Phenology Flowering May–Jun; fruiting Sep–Feb. Flowering Mar–May; fruiting Jul–Nov.
Habitat Thickets, creek banks, open forests, edges Thickets, edges, disturbed forests
Elevation 0–50 m (0–200 ft) 0–200 m (0–700 ft)
Distribution
from FNA
WA; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
OR; 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. FNA vol. 9, p. 463.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster 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
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. pannosus, C. qungbixiensis, C. rehderi, C. salicifolius, C. simonsii, C. sternianus, C. tengyuehensis, C. transens, C. vestitus, C. villosulus, C. ×suecicus
Name authority J. Fryer & B. Hylmö: Watsonia 21: 338. (1997) Rehder & E. H. Wilson: in C. S. Sargent, Pl. Wilson. 1: 156. (1912)
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