Cotoneaster franchetii |
Cotoneaster dielsianus |
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cotoneaster, Franchet's cotoneaster, orange cotoneaster |
diel's cotoneaster |
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Habit | Shrubs, 2–3 m. Stems erect, arching, lax, slender; branches distichous, maroon, initially densely pilose-strigose. | Shrubs, 2–4 m. Stems narrowly erect, spreading; branches distichous, grayish brown, initially tomentose-pilose. |
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 2–5 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. |
Inflorescences | on fertile shoots 30–60 mm with 4 leaves, 5–15(–25)-flowered, compact. |
on fertile shoots 10–35 mm with 4 leaves, 2–7(–10)-flowered, compact. |
Pedicels | 1–4 mm, densely long-silky hairy. |
1–3 mm, tomentose-strigose. |
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). |
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). |
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. |
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. |
Pyrenes | 2 or 3(or 4). |
3 or 4(or 5). |
2n | = 68 (Germany). |
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Cotoneaster franchetii |
Cotoneaster dielsianus |
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Phenology | Flowering May–Jul; fruiting Oct–Apr. | Flowering May–Jun; fruiting Aug–Mar. |
Habitat | Edges, thickets, disturbed forests, flood plains, urban waste ground, mossy ledges, wet prairie remnants | Edges of woods, disturbed forests, flood plains, thickets, waste ground, cliffs, meadows, brushy wet prairie remnants |
Elevation | 0–700 m (0–2300 ft) | 0–500 m (0–1600 ft) |
Distribution |
CA; OR; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe, Pacific Islands (New Zealand), Australia]
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OR; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe] |
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.) |
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. 465. | FNA vol. 9, p. 466. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster |
Sibling taxa | ||
Name authority | Bois: Rev. Hort. 74: 380, figs. 159–161, 164. (1902) | E. Pritz ex Diels: Bot. Jahrb. Syst. 29: 385. (1900) |
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