Cotoneaster dielsianus

E. Pritz ex Diels

Bot. Jahrb. Syst. 29: 385. 1900.

Common names: Diels' cotoneaster
Introduced
Treatment appears in FNA Volume 9. Treatment on page 466. Mentioned on page 451, 467.

Shrubs, 2–4 m. Stems narrowly erect, spreading; branches distichous, grayish brown, initially tomentose-pilose. Leaves 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 10–35 mm with 4 leaves, 2–7 (–10) -flowered, compact. Pedicels 1–3 mm, tomentose-strigose. Flowers 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 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 3 or 4 (or 5).


Phenology: Flowering May–Jun; fruiting Aug–Mar.
Habitat: Edges of woods, disturbed forests, flood plains, thickets, waste ground, cliffs, meadows, brushy wet prairie remnants
Elevation: 0–500 m

Distribution

V9 787-distribution-map.jpg

Introduced; B.C., Oreg., Wash., Asia (China), also in Europe

Discussion

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.

Selected References

None.

Lower Taxa

None.
... more about "Cotoneaster dielsianus"
bright-yellow +  and orange or red +
pilose +  and not glaucous +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
apiculate +  and cuspidate +
Jeanette Fryer +, Bertil Hylmö† +  and Peter F. Zika +
E. Pritz ex Diels +
compound +  and simple +
opposite +  and alternate +
cuneate +  and obtuse +
15 cm150 mm <br />0.15 m <br /> (21 cm210 mm <br />0.21 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
ovate +  and elliptic or broadly ovate +
0.4 cm4 mm <br />0.004 m <br /> (15 cm150 mm <br />0.15 m <br />) +
? (?) +  and ? (?) +
7mm +  and 23mm +
grayish brown +
tomentose-pilose +
adnate +  and distinct +
strigose +  and tomentose +
Diels' cotoneaster +
B.C. +, Oreg. +, Wash. +, Asia (China) +  and also in Europe +
not +  and aggregated +
0–500 m +
red +  and dark red +
hairy +  and glabrous +
unisexual +  and bisexual +
0.6 cm6 mm <br />0.006 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
not +  and aggregated +
not +  and aggregated +
1.4 cm14 mm <br />0.014 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
orange +  and red or purple +
0.4 cm4 mm <br />0.004 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Edges of woods, disturbed forests, flood plains, thickets, waste ground, cliffs, meadows, brushy wet prairie remnants +
tomentose-pilose +  and tomentose-strigose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-7(-10)-flowered +
flattened +  and domed +
crassinucellate +
deciduous +
pinnate +  and entire +
off-white +  and reddish +
2 +  and 14 +
revolute +  and flat +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
tomentose-strigose +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
erect-incurved +
1 +  and 5 +
tomentose-pilose +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering May–Jun +  and fruiting Aug–Mar. +
adnate +, free +, connate +  and distinct +
bright red +
0.5 cm5 mm <br />0.005 m <br /> (0.91 cm9.1 mm <br />0.0091 m <br />) +
pilose +  and not glaucous +
depressed-globose +, globose +  and obovoid +
0.51 cm5.1 mm <br />0.0051 m <br /> (0.88 cm8.8 mm <br />0.0088 m <br />) +
Bot. Jahrb. Syst. +
trigonous +  and planoconvex +
not arillate +
persistent +
free +  and distinct +
erect +  and incurved +
triangular +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
tomentose +  and strigose +
Introduced +
free +  and distinct +
branched +  and simple +
spreading +  and erect +
1 +  and 25 +
short-adnate +
inconspicuous +
deciduous +
distinct +
lateral +  and terminal +
1/2 +  and 2/3 +
elongate +
Ostinia +
Cotoneaster dielsianus +
Cotoneaster +
species +
inconspicuous +
2 +  and 4 +