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necklace cotoneaster, winter-green cotoneaster

earthquake 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, sprawling, 0.5(–1.5) m. Stems erect, becoming suberect, ascending, wide-spreading; branches spiraled, dense, maroon, stiff, minutely verruculose, initially densely pilose or villose-strigose, later sparsely so.
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.

persistent;

petiole 1–2 mm, tomentose;

blade narrowly elliptic, sometimes lance-elliptic, rarely lanceolate, 5–11 × 2–6 mm, coriaceous, base narrowly cuneate, margins slightly revolute, veins 2–4, slightly sunken, apex acute or obtuse with long mucro, abaxial surfaces grayish white-tomentose, adaxial dark green, shiny, not glaucous, minutely rugose and verruculose, flat between lateral veins, initially pilose-strigose, soon glabrate.

Inflorescences

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

on fertile shoots 10–20 mm with 4 leaves, 1(–3)-flowered.

Pedicels

1–3 mm, pilose-strigose.

1–3 mm, tomentose.

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).

erect, 7–8 mm diam.;

buds white;

hypanthium funnelform, densely villous, becoming glabrate;

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

petals spreading, white, glabrous or hairy;

stamens 20, filaments white, anthers purple;

styles 2.

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.

bright red, sometimes tinged crimson or cherry, globose, subglobose, or depressed-globose, 6–7 × 5–8 mm, shiny, not glaucous, sparsely villous;

sepals suberect or erect as coronet, villous to sparsely so;

navel open with pyrenes exserted;

style remnants at apex.

Pyrenes

2(or 3).

2.

2n

= 34 (Germany).

= 68 (Germany).

Cotoneaster conspicuus

Cotoneaster hodjingensis

Phenology Flowering Apr–May; fruiting Oct–May. Flowering Jun; fruiting Oct–Nov.
Habitat Brushy edges in urban areas Banks, disturbed ground
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
CA; WA; Asia (China) [Introduced in North America]
[BONAP county map]
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.)

Cotoneaster hodjingensis sometimes is synonymized with C. buxifolius Wallich ex Lindley (Zhou L. H. and Wu Z. Y. 2001; L. Lingdi and A. R. Brach 2003), a species from southern India with elliptic to ovate-elliptic, usually obtuse (rarely short-acute) leaves to 17 mm, petioles to 4 mm, 1–9 flowers per inflorescence (to 20 on end shoots), and a tomentose hypanthium. Here, C. hodjingensis is treated as separable by its normally narrower leaves no longer than 11 mm, usually acute, with petioles to 2 mm, solitary flowers (2 or 3 flowers per inflorescence on end shoots), and villous hypanthium becoming glabrate (G. Klotz 1963).

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

Source FNA vol. 9, p. 457. FNA vol. 9, p. 458.
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. 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
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) G. Klotz: Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg, Math.-Naturwiss. Reihe 12: 774. (1963)
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