Cotoneaster transens |
Cotoneaster rehderi |
|
---|---|---|
Mclaren's cotoneaster |
bullate cotoneaster, puckered-leaf cotoneaster |
|
Habit | Shrubs or trees, 4–6 m. Stems loosely erect, spreading, stiff; branches spiraled, maroon, minutely verrucose, initially pilose-strigose. | Shrubs, 2–5 m. Stems erect, arching; branches distichous or spiraled, maroon to brown, lenticellate, initially pilose-strigose. |
Leaves | deciduous; petiole 4–6 mm, densely pilose-strigose; blade on sterile shoots elliptic, (35–)50–80(–103) x (13–)17–37(–42) mm, chartaceous, margins flat, base cuneate, veins 6–10, superficial or lightly sunken, apex acute or obtuse, abaxial surfaces color not recorded, villose-strigose, adaxial brownish green, soon green, dull, coating not recorded, flat between lateral veins, glabrate; fall leaves yellow. |
deciduous; petiole 0–3 mm, pilose-strigose; blade elliptic, sometimes ovate-elliptic, rarely obovate, (50–)70–124(–210) x (24–)30–55(–90) mm, subcoriaceous, base cuneate, obtuse, truncate, or auriculate, margins flat, not revolute, veins 8–11, deeply sunken, apex long-acuminate, sometimes acute on short shoots, abaxial surfaces light green, initially yellowish strigose, adaxial green, shiny, not glaucous, strongly wrinkled or bulging between lateral veins (bullate), initially sparsely pilose; fall leaves intense butter yellow and reddish purple. |
Inflorescences | on fertile shoots 40–50 mm with 2–4 leaves, 10–25-flowered, lax. |
on fertile shoots 60–120 mm with 4 leaves, 8–32-flowered, lax. |
Pedicels | 3–5 mm, densely pilose-strigose. |
2–4 mm, pilose-strigose. |
Flowers | 10–12 mm diam.; buds white; hypanthium cupulate, villose-strigose; sepals: margins villous, apex acute, surfaces sparsely villous; petals spreading, white, with large hair tuft; stamens (16–)20, filaments white, anthers black, styles 1 or 2. |
(5–)7–9 mm, closed; hypanthium shallowly cupulate, shiny, sparsely pilose-strigose; sepals: margins villous, apex acute, surfaces shiny, glabrous; petals erect-incurved, pink, red, greenish pink, or maroon, margins pink; stamens 20–23, filaments pink, white distally, anthers white; styles (4 or)5. |
Pomes | maroon to purple-black, obovoid to elliptic-obovoid, 9–12 × 9–10 mm, slightly shiny, glaucous, sometimes sparsely villous; sepals flat, margins glabrous, sparsely villous; navel slightly open; style remnants 9/10 from base. |
bright to dark red, obovoid, broadly obovoid, or obconic, rarely globose or depressed-globose, 8–12.4 × 7–11.3 mm, shiny, not glaucous, sparsely pilose; sepals flat, glabrous; navel closed; style remnants 3/4 from base. |
Pyrenes | 1 or 2. |
(4 or)5. |
Cotoneaster transens |
Cotoneaster rehderi |
|
Phenology | Flowering Jun; fruiting Oct–Nov. | Flowering May–Jun; fruiting Sep–Dec. |
Habitat | Thickets | Thickets, disturbed forests, flood plains, lakeshores |
Elevation | 0–50 m (0–200 ft) | 0–200 m (0–700 ft) |
Distribution |
WA; Asia (China) [Introduced in North America; introduced also in Europe] |
AK; WA; BC; Asia (China) [Introduced in North America; introduced also in Europe] |
Discussion | L. Lingdi and A. R. Brach (2003) synonymized Cotoneaster transens with C. glaucophyllus Franchet (as C. glaucophyllus var. glaucophyllus). Cotoneaster transens is a deciduous species with purple-black pomes and is not closely related to C. glaucophyllus, an evergreen species with smaller leaves, smaller red pomes, and smaller flowers, among other differences. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Reports of Cotoneaster bullatus (treated as C. bullatus var. bullatus by L. Lingdi and A. R. Brach 2003) from British Columbia (J. Pojar 1999) are here referred to C. rehderi. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 457. | FNA vol. 9, p. 464. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. bullatus var. macrophyllus | |
Name authority | G. Klotz: Wiss. Z. Friedrich-Schiller-Univ. Jena, Math.-Naturwiss. Reihe 17(3): 337, fig. 4. (1968) | Pojarkova: Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 184. (1955) |
Web links |