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diel's cotoneaster

vested cotoneaster, woolly cotoneaster

Habit Shrubs, 2–4 m. Stems narrowly erect, spreading; branches distichous, grayish brown, initially tomentose-pilose. Shrubs, 2–5 m. Stems erect, arching to pendulous; branches spiraled or distichous, purple-black, slender, initially tomentose-villous.
Leaves

deciduous;

petiole 2–5 mm, tomentose-pilose;

blade ovate to elliptic or broadly ovate, 9–38 × 7–23 mm, coriaceous or subcoriaceous, base obtuse or cuneate, margins flat, not revolute, veins 2–4, lightly sunken, apex acute or acuminate, abaxial surfaces densely grayish tomentose, adaxial dark green to grayish green, shiny, not glaucous, flat, rarely slightly bulging, between lateral veins, slightly rugose, pilose;

fall leaves bright yellow to orange or red.

persistent;

petiole 3–7 mm, tomentose;

blade elliptic, 35–77 × 15–35 mm, subcoriaceous or coriaceous, base cuneate or obtuse, margins flat, veins 5–9, ± superficial, apex acute or obtuse, abaxial surfaces gray-tomentose, adaxial green, dull, slightly glaucous, flat between lateral veins, initially sparsely pilose.

Inflorescences

on fertile shoots 10–35 mm with 4 leaves, 2–7(–10)-flowered, compact.

on fertile shoots 30–60 mm, usually with 3 leaves, 15–40-flowered, compact.

Pedicels

1–3 mm, tomentose-strigose.

1–5 mm, tomentose.

Flowers

erect, 6–7.5 mm, closed;

hypanthium funnelform, proximally tomentose-strigose, distally tomentose-pilose;

sepals: margins reddish tomentose, borders purple, broad, glabrous, apex cuspidate or apiculate, surfaces pilose;

petals erect-incurved, dark pink to red, base dark red, margins off-white;

stamens 14–20, filaments red to dark red, anthers white;

styles 3 or 4(or 5).

6–6.5(–9) mm diam.;

buds white;

hypanthium cupulate, tomentose;

sepals: margins villous, apex cuspidate, acute or obtuse, surfaces tomentose;

petals spreading, creamy white, glabrous;

stamens 15–17(–20), filaments white, anthers pink-purple to dark purple;

styles [1 or]2.

Pomes

bright red, broadly obovoid, sometimes globose or depressed-globose, 5–9.1 × 5.1–8.8 mm, slightly shiny, not glaucous, pilose;

sepals flat, tomentose;

navel open;

style remnants 1/2–2/3 from base.

red [rarely maroon], globose, 6–7 mm, shiny, not glaucous, sparsely villous;

sepals suberect, margins villous, tomentose;

navel open;

style remnants at apex.

Pyrenes

3 or 4(or 5).

[1 or]2.

Cotoneaster dielsianus

Cotoneaster vestitus

Phenology Flowering May–Jun; fruiting Aug–Mar. Flowering Jun–Jul; fruiting Nov–Mar.
Habitat Edges of woods, disturbed forests, flood plains, thickets, waste ground, cliffs, meadows, brushy wet prairie remnants Urban waste ground
Elevation 0–500 m (0–1600 ft) 0–50 m (0–200 ft)
Distribution
from FNA
OR; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
from FNA
WA; Asia (China) [Introduced in North America]
[BONAP county map]
Discussion

L. Lingdi and A. R. Brach (2003) included within Cotoneaster dielsianus several taxa recognized here as distinct species, including C. bradyi J. Fryer & E. C. Nelson and C. splendens Flinck & B. Hylmö. Some collections from Oregon approach an undescribed species from China but differ in fruit shape.

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

Source FNA vol. 9, p. 466. FNA vol. 9, p. 455.
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. 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. qungbixiensis, C. rehderi, C. salicifolius, C. simonsii, C. sternianus, C. tengyuehensis, C. transens, C. villosulus, C. ×suecicus
Synonyms C. glaucophyllus var. vestitus
Name authority E. Pritz ex Diels: Bot. Jahrb. Syst. 29: 385. (1900) (W. W. Smith) Flinck & B. Hylmö: Bot. Not. 119: 460. (1966)
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