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cotoneaster, Franchet's cotoneaster, orange cotoneaster

cotoneaster, hjelmquist's cotoneaster, Hjelmqvist's cotoneaster

Habit Shrubs, 2–3 m. Stems erect, arching, lax, slender; branches distichous, maroon, initially densely pilose-strigose. Shrubs, 0.5–1 m. Stems ascending to erect, spreading horizontally, arching; branches usually distichous, brownish red, initially densely strigose.
Leaves

persistent, often 30–40 mm apart;

petiole 2–4 mm, tomentose-pilose;

blade ovate or elliptic, 22–58 × 12–29 mm, coriaceous, base cuneate or obtuse, margins flat, veins 4 or 5, sunken, apex acute or acuminate, mucronate, abaxial surfaces silvery-tomentose, adaxial grayish green, slightly shiny, not glaucous, flat, rarely slightly bulging between lateral veins, drying slightly rugose, pilose.

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 30–60 mm with 4 leaves, 5–15(–25)-flowered, compact.

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

Pedicels

1–4 mm, densely long-silky hairy.

0.5–2(–3) mm, glabrescent.

Flowers

(5–)7–8(–10) mm, opening small;

hypanthium cupulate, densely long-silky hairy;

sepals: margins villous, borders purple, glabrous, apex cuspidate or acuminate, surfaces silky hairy;

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

stamens 16–21, filaments pink, distally white, anthers pink or purplish pink;

styles 2 or 3(or 4).

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

orange-red, obovoid base rounded or obconic base cuneate, straight-sided, 8–12 × 6–9 mm, apex flat, shiny, not glaucous, sparsely pilose;

sepals flat, often asymmetric with 2 sepals longer than others, tomentose;

navel slightly open;

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

2 or 3(or 4).

2 or 3, distinct.

2n

= 68 (Germany).

Cotoneaster franchetii

Cotoneaster hjelmqvistii

Phenology Flowering May–Jul; fruiting Oct–Apr. Flowering May; fruiting Oct–Nov.
Habitat Edges, thickets, disturbed forests, flood plains, urban waste ground, mossy ledges, wet prairie remnants Thickets, wet prairie remnants
Elevation 0–700 m (0–2300 ft) 0–200 m (0–700 ft)
Distribution
from FNA
CA; OR; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe, Pacific Islands (New Zealand), Australia]
[WildflowerSearch map]
[BONAP county map]
from FNA
OR; Asia (China) [Introduced in North America; introduced also in Europe]
[BONAP county map]
Discussion

Reports of Cotoneaster franchetii from Colorado (J. Ells 2006) are here referred to C. lucidus. A few specimens escaped in Washington have red filaments, not pink, but otherwise agree with C. franchetii. Other escapes in Washington suggest the closely related C. wardii W. W. Smith, distinguished by semievergreen habit, longer fertile shoots, more lax and elongate inflorescences, and white anthers. The entire complex needs biosystematic review.

(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. 465. 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. 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. 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
Name authority Bois: Rev. Hort. 74: 380, figs. 159–161, 164. (1902) Flinck & B. Hylmö: Watsonia 18: 312. (1991)
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