Cotoneaster conspicuus |
Cotoneaster dielsianus |
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necklace cotoneaster, winter-green cotoneaster |
diel's cotoneaster |
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Habit | Shrubs, 0.5–1[–2.5] m. Stems weakly ascending or mound-forming [prostrate]; branches spiraled or distichous, dense, maroon, initially strigose. | Shrubs, 2–4 m. Stems narrowly erect, spreading; branches distichous, grayish brown, initially tomentose-pilose. |
Leaves | persistent; petiole 1–3 mm, pilose-strigose; blade elliptic to narrowly elliptic, rarely lanceolate, 6–12(–20) x 2–6(–8) mm, subcoriaceous or coriaceous, base cuneate, margins revolute, veins 3–5, superficial, apex obtuse or acute, abaxial surfaces grayish green, reticulate, initially pilose-strigose, adaxial grayish green [rarely green], dull to slightly shiny, coating not recorded, slightly rugose, sparsely pilose or glabrous. |
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 8–12 mm with 3 or 4 leaves, 1-flowered, 2–4-flowered on shoot tips. |
on fertile shoots 10–35 mm with 4 leaves, 2–7(–10)-flowered, compact. |
Pedicels | 1–3 mm, pilose-strigose. |
1–3 mm, tomentose-strigose. |
Flowers | 9–13 mm diam.; buds pink; hypanthium cupulate, pilose-strigose; sepals: margins villous, borders mostly reddish, membranous, apex acute or obtuse, surfaces pilose-strigose; petals spreading, white; stamens 17–21, filaments white, anthers purple-black; styles 2(or 3). |
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 to red, depressed-globose, 8–10 × 9–11 mm, shiny, not glaucous, glabrous; sepals suberect, pilose; navel not recorded; style remnants at elongated apex. |
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). |
3 or 4(or 5). |
2n | = 34 (Germany). |
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Cotoneaster conspicuus |
Cotoneaster dielsianus |
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Phenology | Flowering Apr–May; fruiting Oct–May. | Flowering May–Jun; fruiting Aug–Mar. |
Habitat | Brushy edges in urban areas | Edges of woods, disturbed forests, flood plains, thickets, waste ground, cliffs, meadows, brushy wet prairie remnants |
Elevation | 0–50 m (0–200 ft) | 0–500 m (0–1600 ft) |
Distribution |
WA; Asia (China) [Introduced in North America; introduced also in Europe] |
OR; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe] |
Discussion | G. Klotz (1963) emended the diagnosis of Cotoneaster conspicuus to recognize erect plants as var. conspicuus and more decumbent plants as var. decorus. This variation in habit is not significant taxonomically and not unusual for an outcrossing diploid, so the emended description by Klotz of the species is superfluous. (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. 457. | FNA vol. 9, p. 466. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. microphyllus var. conspicuus, C. conspicuus var. decorus, C. conspicuus var. nanus, C. nanus, C. permutatus | |
Name authority | (Messel) Messel: J. Roy. Hort. Soc. 59: 303. (1934) | E. Pritz ex Diels: Bot. Jahrb. Syst. 29: 385. (1900) |
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