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bullate cotoneaster, puckered-leaf cotoneaster

cotoneaster, hjelmquist's cotoneaster, Hjelmqvist's cotoneaster

Habit Shrubs, 2–5 m. Stems erect, arching; branches distichous or spiraled, maroon to brown, lenticellate, initially pilose-strigose. Shrubs, 0.5–1 m. Stems ascending to erect, spreading horizontally, arching; branches usually distichous, brownish red, initially densely 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.

deciduous;

petiole 2–4 mm, pilose;

blade broadly elliptic, on vigorous shoots orbiculate, sometimes broadly obovate, concave, 10–18(–25) x 9–15(–25) mm, chartaceous, base obtuse, margins flat, veins 3 or 4(or 5), superficial or slightly sunken, apex obtuse, mucronulate, abaxial surfaces pale green, yellowish pilose-strigose, adaxial vivid light green, shiny, not glaucous, flat between lateral veins, glabrous;

fall leaves red to intense red-purple.

Inflorescences

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

on fertile shoots 5–25 mm with 3 or 4 leaves, 1–3(or 4)-flowered, compact.

Pedicels

2–4 mm, pilose-strigose.

0.5–2(–3) mm, glabrescent.

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.

5–6 mm, open;

hypanthium cupulate, glabrescent;

sepals: margins villous, apex green and reddish purple, acuminate or acute, surfaces glabrous;

petals erect-incurved, dark pink, base red, margins pink;

stamens 10–12(–16), filaments red and pale crimson, anthers white;

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.

orange-red, usually broadly obovoid, sometimes subglobose or obovoid, 5.7–6.8[–8] x 4.9–7.2[–8] mm, shiny, not glaucous, glabrous;

sepals suberect, margins villous, glabrous;

navel open;

style remnants 4/5 from base.

Pyrenes

(4 or)5.

2 or 3, distinct.

Cotoneaster rehderi

Cotoneaster hjelmqvistii

Phenology Flowering May–Jun; fruiting Sep–Dec. Flowering May; fruiting Oct–Nov.
Habitat Thickets, disturbed forests, flood plains, lakeshores Thickets, wet prairie remnants
Elevation 0–200 m (0–700 ft) 0–200 m (0–700 ft)
Distribution
from FNA
AK; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
OR; 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 hjelmqvistii was overlooked in the Flora of China (L. Lingdi and A. R. Brach 2003).

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

Source FNA vol. 9, p. 464. FNA vol. 9, p. 462.
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. cochleatus, C. conspicuus, C. crispii, C. dammeri, C. dielsianus, C. divaricatus, C. fangianus, C. franchetii, C. frigidus, C. gamblei, 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
Name authority Pojarkova: Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 184. (1955) Flinck & B. Hylmö: Watsonia 18: 312. (1991)
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