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Yunnan cotoneaster

entire-leaf cotoneaster, small-leaf cotoneaster

Habit Shrubs, to 0.4 m. Stems prostrate or nearly so, carpeting, rooting; branches spiraled and distichous, dense, red to purple-black, slender, initially yellow-green strigose. Shrubs, wide-spreading, 0.5–1.5 m. Stems weakly ascending, suberect, or decumbent; branches spiraled, purple-black, sometimes green and brown striate, initially strigose.
Leaves

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.

persistent, petiole 1–5 mm, strigose;

blade oblanceolate or oblong, rarely lanceolate, 8–17 × 3–8 mm, coriaceous, base cuneate, margins revolute, veins 2–4, superficial, apex rotund or obtuse, rarely emarginate or acute, abaxial surfaces grayish white, faintly reticulate, initially densely strigose or strigose-pilose, later glabrate, adaxial dark green, sometimes blue-green, shiny, not glaucous, not bulging between lateral veins, initially strigose, soon glabrate.

Inflorescences

on fertile shoots 8–15 mm, usually with 4 leaves, 1(–3)-flowered.

on fertile shoots 5–12 mm with 2 or 3 leaves, 1(or 2)-flowered, subsessile.

Pedicels

3–5 mm, strigose.

erect, densely strigose.

Flowers

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).

7–15 mm diam.;

buds pink;

hypanthium narrowly cupulate, densely strigose;

sepals: margins densely villose-strigose, borders membranous, apex often red, acute or obtuse, sometimes shortly mucronate, surfaces often densely strigose-villous;

petals spreading, white, glabrous;

stamens 20, filaments white, anthers red-purple;

styles 2[or 3].

Pomes

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.

dark red with crimson, sometimes red, depressed-globose, 7–9 × 7–10 mm, dull or slightly shiny, glaucous, sparsely villous;

sepals suberect or erect, villous;

navel open;

style remnants at apex.

Pyrenes

2(or 3).

2[or 3].

2n

= 68 (Germany).

= 68 (Germany).

Cotoneaster cochleatus

Cotoneaster integrifolius

Phenology Flowering May–Jun; fruiting Sep–Nov. Flowering Apr–Jun; fruiting Aug–Mar.
Habitat Forest edges Openings in conifer forests
Elevation 0–50 m (0–200 ft) 0–200 m (0–700 ft)
Distribution
from FNA
NY; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
CA; Asia [Introduced in North America; introduced also in Europe]
Discussion

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 integrifolius was treated as C. microphyllus Wallich ex Lindley var. thymifolius (Baker) Koehne by L. Lingdi and A. R. Brach (2003).

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

Source FNA vol. 9, p. 459. 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. 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. 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. 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. buxifolius, C. microphyllus var. cochleatus, C. thymifolius var. cochleatus Crataegus integrifolius
Name authority (Franchet) G. Klotz: Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg, Math.-Naturwiss. Reihe 6: 952. (1957) (Roxburgh) G. Klotz: Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg, Math.-Naturwiss. Reihe 12: 779. (1963)
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