Cotoneaster atropurpureus

Flinck & B. Hylmö

Watsonia 18: 311. 1991.

Common names: Prostrate or purple-flowered cotoneaster
IllustratedIntroduced
Treatment appears in FNA Volume 9. Treatment on page 461. Mentioned on page 453.

Shrubs, 0.5–1 m. Stems ascending to erect, spreading horizontally, arching; branches divaricate, sometimes distichous, red-purple, initially densely yellowish strigose-villous. Leaves deciduous; petiole 1–2 mm, yellow-villous; blade elliptic, on vigorous shoots obovate-orbiculate, 9–14 × 8–12 mm, chartaceous, base obtuse or acute, margins flat or slightly undulate, veins 2 or 3, superficial or slightly sunken, apex obtuse or truncate, mucronulate, abaxial surfaces shiny, sparsely golden yellow-pilose, adaxial green to dark green, shiny, not glaucous, flat or scarcely bulging between lateral-veins, glabrous; fall leaves ruby red. Inflorescences on fertile shoots 9–11 mm with 3 leaves, (1 or) 2 or 3-flowered, compact. Pedicels 0.2–1 mm, pilose. Flowers 6 mm, closed or nearly so; hypanthium funnelform, sparsely yellow-pilose-strigose; sepals: margins yellow-villous, apex green and red-purple, acuminate or acute, surfaces sparsely pilose; petals erect-incurved, dark red, base purple-black, margins narrowly white; stamens 10–14, filaments dark red to dark purple-red, white distally, anthers white [pink-tinged]; styles 2 or 3 (or 4). Pomes bright red, usually broadly obovoid, sometimes obovoid, 7–8 × 7–8 mm, shiny, not glaucous, glabrate; sepals suberect, margins villous, sparsely pilose; navel open; style remnants 3/4 from base. Pyrenes 2 or 3 (or 4).


Phenology: Flowering May; fruiting Sep–Jan.
Habitat: Thickets, rock roadcuts, paths, edges of disturbed forests
Elevation: 0–400 m

Distribution

V9 775-distribution-map.jpg

Introduced; N.Y., Wash., Asia (China), also in Europe

Discussion

Although treated as synonymous with Cotoneaster horizontalis by L. Lingdi and A. R. Brach (2003), C. atropurpureus is separated by having somewhat thinner leaves on vigorous shoots that tend to be obovate instead of broadly elliptic, with obtuse to truncate apices and sometimes slightly wavy margins. It also tends towards less regular branching and somewhat darker petals and filaments.

Selected References

None.

Lower Taxa

None.

... more about "Cotoneaster atropurpureus"
golden yellow-pilose +
ruby red +, green +  and dark green +
glabrous +  and not glaucous +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
green and red-purple +
Jeanette Fryer +, Bertil Hylmö† +  and Peter F. Zika +
Flinck & B. Hylmö +
compound +  and simple +
opposite +  and alternate +
purple-black +
acute +  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 /> (1.4 cm14 mm <br />0.014 m <br />) +
ovate +, lanceolate +, orbiculate +  and elliptic to linear +
0.4 cm4 mm <br />0.004 m <br /> (15 cm150 mm <br />0.15 m <br />) +
leathery +  and membranous +
8mm +  and 12mm +
distichous +  and divaricate +
strigose-villous +
adnate +  and distinct +
strigose +  and tomentose +
Prostrate or purple-flowered cotoneaster +
N.Y. +, Wash. +, Asia (China) +  and also in Europe +
not +  and aggregated +
0–400 m +
white +, dark red +  and dark purple-red +
nearly +  and closed +
hairy +  and glabrous +
unisexual +  and bisexual +
6 cm60 mm <br />0.06 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 />) +
Thickets, rock roadcuts, paths, edges of disturbed forests +
yellow-pilose-strigose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flattened +  and domed +
crassinucellate +
deciduous +
pinnate +  and entire +
pilose +, villous +  and yellow-villous +
2 +  and 14 +
undulate +  and flat +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 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 +
yellow-villous +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering May +  and fruiting Sep–Jan. +
adnate +, free +, connate +  and distinct +
bright red +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
glabrate +  and not glaucous +
obovoid +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
trigonous +  and planoconvex +
not arillate +
persistent +
free +  and distinct +
triangular +
obovate-orbiculate +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
tomentose +  and strigose +
Illustrated +  and Introduced +
free +  and distinct +
branched +  and simple +
arching +, spreading +, ascending +  and erect +
1 +  and 25 +
short-adnate +
inconspicuous +
lanceolate;linear +
deciduous +
distinct +
lateral +  and terminal +
elongate +
Ostinia +
Cotoneaster atropurpureus +
Cotoneaster +
species +
inconspicuous +
superficial +
3 +  and 2 +