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bullate cotoneaster, puckered-leaf cotoneaster

Yunnan cotoneaster

Habit Shrubs, 2–5 m. Stems erect, arching; branches distichous or spiraled, maroon to brown, lenticellate, initially pilose-strigose. 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.
Leaves

deciduous;

petiole 0–3 mm, pilose-strigose;

blade elliptic, sometimes ovate-elliptic, rarely obovate, (50–)70–124(–210) x (24–)30–55(–90) mm, subcoriaceous, base cuneate, obtuse, truncate, or auriculate, margins flat, not revolute, veins 8–11, deeply sunken, apex long-acuminate, sometimes acute on short shoots, abaxial surfaces light green, initially yellowish strigose, adaxial green, shiny, not glaucous, strongly wrinkled or bulging between lateral veins (bullate), initially sparsely pilose;

fall leaves intense butter yellow and reddish purple.

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.

Inflorescences

on fertile shoots 60–120 mm with 4 leaves, 8–32-flowered, lax.

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

Pedicels

2–4 mm, pilose-strigose.

3–5 mm, strigose.

Flowers

(5–)7–9 mm, closed;

hypanthium shallowly cupulate, shiny, sparsely pilose-strigose;

sepals: margins villous, apex acute, surfaces shiny, glabrous;

petals erect-incurved, pink, red, greenish pink, or maroon, margins pink;

stamens 20–23, filaments pink, white distally, anthers white;

styles (4 or)5.

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).

Pomes

bright to dark red, obovoid, broadly obovoid, or obconic, rarely globose or depressed-globose, 8–12.4 × 7–11.3 mm, shiny, not glaucous, sparsely pilose;

sepals flat, glabrous;

navel closed;

style remnants 3/4 from base.

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.

Pyrenes

(4 or)5.

2(or 3).

2n

= 68 (Germany).

Cotoneaster rehderi

Cotoneaster cochleatus

Phenology Flowering May–Jun; fruiting Sep–Dec. Flowering May–Jun; fruiting Sep–Nov.
Habitat Thickets, disturbed forests, flood plains, lakeshores Forest edges
Elevation 0–200 m (0–700 ft) 0–50 m (0–200 ft)
Distribution
from FNA
AK; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
NY; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
Discussion

Reports of Cotoneaster bullatus (treated as C. bullatus var. bullatus by L. Lingdi and A. R. Brach 2003) from British Columbia (J. Pojar 1999) are here referred to C. rehderi.

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

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.)

Source FNA vol. 9, p. 464. FNA vol. 9, p. 459.
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. salicifolius, C. simonsii, C. sternianus, C. tengyuehensis, C. transens, C. vestitus, C. villosulus, C. ×suecicus
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
Synonyms C. bullatus var. macrophyllus C. buxifolius, C. microphyllus var. cochleatus, C. thymifolius var. cochleatus
Name authority Pojarkova: Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 184. (1955) (Franchet) G. Klotz: Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg, Math.-Naturwiss. Reihe 6: 952. (1957)
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