Cotoneaster pannosus |
Cotoneaster sternianus |
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silver-leaf cotoneaster, woolly cotoneaster |
Stern's cotoneaster |
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Habit | Shrubs, 1–5 m. Stems erect, wide-spreading, arching, pendulous, slender; branches spiraled, purple-black, tomentose-villous. | Shrubs, 1.5–4 m. Stems erect, arching, stiff; branches distichous, maroon, whitish tomentose-pilose. |
Leaves | persistent; petiole 4–7 mm, tomentose; blade elliptic, sometimes broadly elliptic, 15–35(–39) x 10–19(–26) mm, mid-coriaceous, base cuneate, margins flat, veins 4–6, usually superficial, sometimes slightly sunken, apex acute or obtuse, abaxial surfaces whitish tomentose, adaxial green to blue-green, dull, not glaucous, usually flat between lateral veins, initially sparsely pilose. |
persistent; petiole 4–6 mm, tomentose-pilose; blade elliptic to broadly ovate, (18–)25–52(–56) x (12–)16–28(–34) mm, coriaceous, base obtuse or cuneate, margins recurved, veins 4–6, deeply sunken, apex acute or acuminate, abaxial surfaces whitish tomentose, adaxial dark green, slightly shiny, not glaucous, on vigorous shoots usually bulging slightly between lateral veins (unless shaded), very rugose, pilose. |
Inflorescences | on fertile shoots 20–45 mm, usually with 4 leaves, (3–)5–15(–25)-flowered, compact. |
on fertile shoots 25–70 mm with 3–5 leaves, 7–20-flowered, compact. |
Pedicels | 1–5 mm, tomentose. |
1–4 mm, tomentose-pilose. |
Flowers | [7–]8.5–10 mm diam.; buds white; hypanthium funnelform or cupulate, silky-tomentose; sepals: margins villous, borders white, narrow, membranous, apex red, cuspidate, sometimes acute or obtuse, surfaces tomentose; petals spreading, white, sometimes with hair tuft; stamens 16–20, filaments white, anthers dark pink-purple to purple; styles (1 or)2. |
(5–)6–7.5 mm, opening small; hypanthium cupulate, silky tomentose; sepals: margins villous, borders purple, glabrous, apex acute or acuminate, surfaces silky tomentose; petals erect-incurved, pink to red, base dark red (with minute black dots), margins erect-incurved, pink or white; stamens 20, filaments red, distally pink or whitish, anthers white, sutures pink-tinged; styles (2 or)3 or 4(or 5). |
Pomes | red, globose, depressed-globose, subglobose, or broadly obovoid, 5–9.2 × 5.5–9.5 mm, shiny, not glaucous, villous; sepals suberect, tomentose; navel open; style remnants at apex. |
bright orange, eventually orange-red, subglobose to depressed-globose or globose, 6–10 × 6–10 mm, base rounded, shiny, not glaucous, pilose; sepals flat, tomentose; forming 5-pointed star over closed navel; style remnants 3/4 from base. |
Pyrenes | (1 or)2. |
(2 or)3 or 4(or 5). |
2n | = 68 (Germany). |
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Cotoneaster pannosus |
Cotoneaster sternianus |
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Phenology | Flowering May–Aug; fruiting Oct–May. | Flowering Jun–Jul; fruiting Oct–Jan. |
Habitat | Thickets, meadows, sea cliffs, canyons, coastal chaparral, springs, edges, waste ground, pastures, disturbed forests | Mossy cliffs, thickets, hedges, urban waste ground |
Elevation | 0–800 m (0–2600 ft) | 0–200 m (0–700 ft) |
Distribution |
CA; OR; Asia (China) [Introduced in North America; introduced also in Europe, Africa (South Africa), Pacific Islands (Hawaii, New Zealand), Australia]
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BC; Asia (China, Myanmar) [Introduced in North America; introduced also in Europe, Pacific Islands (New Zealand)] |
Discussion | Cotoneaster sternianus is similar to C. franchetii, a species with more elongated pomes, uniformly pink or purple anthers, and less textured leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 9, p. 455. | FNA vol. 9, p. 466. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Cotoneaster |
Sibling taxa | ||
Synonyms | C. franchetii var. sternianus | |
Name authority | Franchet: Pl. Delavay., 223. (1890) | (Turrill) Boom: Jaarb. Ned. Dendrol. Ver. 20: 81. (1957) |
Web links |