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necklace cotoneaster, winter-green cotoneaster

Cangshan cotoneaster, cotoneaster, truncate-leaf cotoneaster

Habit Shrubs, 0.5–1[–2.5] m. Stems weakly ascending or mound-forming [prostrate]; branches spiraled or distichous, dense, maroon, initially strigose. Shrubs, 2–3 m. Stems erect, arching, spreading; branches distichous or spiraled, reddish brown, initially strigose-pilose.
Leaves

persistent;

petiole 1–3 mm, pilose-strigose;

blade elliptic to narrowly elliptic, rarely lanceolate, 6–12(–20) x 2–6(–8) mm, subcoriaceous or coriaceous, base cuneate, margins revolute, veins 3–5, superficial, apex obtuse or acute, abaxial surfaces grayish green, reticulate, initially pilose-strigose, adaxial grayish green [rarely green], dull to slightly shiny, coating not recorded, slightly rugose, sparsely pilose or glabrous.

deciduous (sometimes tardily so on vigorous basal sprouts);

petiole often red, 3–4 mm, strigose-pilose;

blade elliptic or narrowly elliptic to sometimes elliptic-ovate or narrowly ovate, 20–48(–61) x (10–)15–29 mm, chartaceous, base cuneate or obtuse, margins flat, veins 2–4, sunken, apex minutely truncate, rarely acute, mucronate, abaxial surfaces densely grayish tomentose, adaxial dark green, shiny, not glaucous, flat between lateral veins, slightly rugose, initially pilose;

fall leaves orange.

Inflorescences

on fertile shoots 8–12 mm with 3 or 4 leaves, 1-flowered, 2–4-flowered on shoot tips.

on fertile shoots 30–50 mm with 4–6 leaves, 3–9(–15)-flowered, compact.

Pedicels

1–3 mm, pilose-strigose.

1–3 mm, strigose-pilose.

Flowers

9–13 mm diam.;

buds pink;

hypanthium cupulate, pilose-strigose;

sepals: margins villous, borders mostly reddish, membranous, apex acute or obtuse, surfaces pilose-strigose;

petals spreading, white;

stamens 17–21, filaments white, anthers purple-black;

styles 2(or 3).

6.5–9 mm, open;

hypanthium funnelform, silky tomentose;

sepals: margins tomentose, apex cuspidate or acuminate, surfaces tomentose;

petals erect-incurved, pink or reddish, base dark red, margins yellowish or off-white;

stamens 17–20, filaments dark red, at least proximally, anthers white;

styles (2 or)3 or 4[or 5].

Pomes

orange-red to red, depressed-globose, 8–10 × 9–11 mm, shiny, not glaucous, glabrous;

sepals suberect, pilose;

navel not recorded;

style remnants at elongated apex.

orange-red, obovoid to broadly obovoid or subglobose, rarely globose, (7–)8.2–10.1 × 6.6–7.6 mm, slightly shiny, not glaucous, pilose;

sepals flat, tomentose;

navel closed;

style remnants 2/3 from base.

Pyrenes

2(or 3).

(2 or)3 or 4[or 5].

2n

= 34 (Germany).

= 68 (England).

Cotoneaster conspicuus

Cotoneaster qungbixiensis

Phenology Flowering Apr–May; fruiting Oct–May. Flowering Jun–Jul; fruiting Oct–Dec.
Habitat Brushy edges in urban areas Thickets, disturbed forests
Elevation 0–50 m (0–200 ft) 0–50 m (0–200 ft)
Distribution
from FNA
WA; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
BC; Asia (China) [Introduced in North America]
Discussion

G. Klotz (1963) emended the diagnosis of Cotoneaster conspicuus to recognize erect plants as var. conspicuus and more decumbent plants as var. decorus. This variation in habit is not significant taxonomically and not unusual for an outcrossing diploid, so the emended description by Klotz of the species is superfluous.

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

Source FNA vol. 9, p. 457. FNA vol. 9, p. 466.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster
Sibling taxa
C. adpressus, C. atropurpureus, C. cochleatus, 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. tengyuehensis, 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. nitens, C. pannosus, C. rehderi, C. salicifolius, C. simonsii, C. sternianus, C. tengyuehensis, C. transens, C. vestitus, C. villosulus, C. ×suecicus
Synonyms C. microphyllus var. conspicuus, C. conspicuus var. decorus, C. conspicuus var. nanus, C. nanus, C. permutatus
Name authority (Messel) Messel: J. Roy. Hort. Soc. 59: 303. (1934) J. Fryer & B. Hylmö: J. Bot. Res. Inst. Texas 2: 53, fig. 1. (2008)
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