Cotoneaster lacteus

W. W. Smith

Notes Roy. Bot. Gard. Edinburgh 10: 23. 1917.

Common names: Cream-flowered or late or Parney's cotoneaster
Introduced
Treatment appears in FNA Volume 9. Treatment on page 454. Mentioned on page 449, 451, 452, 455.

Shrubs or trees, 2–9 m. Stems erect, arching, spreading, slender; branches spiraled or distichous, purple-black, initially yellowish tomentose-villous. Leaves persistent; petiole 5–8 mm, initially tomentose; blade obovate to elliptic, rarely broadly elliptic, (26–) 40–85 (–120) x (13–) 19–45 (–60) mm, coriaceous, base cuneate, margins flat or slightly revolute, veins 7–9, deeply sunken, apex short-tapered, acute, acuminate, or obtuse, abaxial surfaces initially yellowish tomentose-villous, adaxial dark green, dull or slightly shiny, not glaucous, bulging slightly between lateral-veins, initially sparsely pilose. Inflorescences on fertile shoots 45–100 mm with 4 leaves, 20–150-flowered, lax. Pedicels 1–5 mm, tomentose-strigose. Flowers 6–9 mm diam.; buds creamy white, sometimes slightly pinkish; hypanthium funnelform, tomentose-strigose; sepals: margins villous, apex cuspidate, surfaces tomentose; petals spreading, creamy white, sometimes with hair-tuft; stamens 20, filaments white, anthers red-purple; styles 2. Pomes crimson, broadly obovoid, subglobose, or globose, 6.5–8.6 × 6.5–7.6 mm, shiny, not glaucous, sparsely villous; sepals depressed or slightly ascending, tomentose; navel slightly open or obscured by sepals; style remnants near apex. Pyrenes 2.2n = 68 (Germany).


Phenology: Flowering May–Jul; fruiting Nov–Apr.
Habitat: Thickets, disturbed forests, edges, urban waste ground, stonework, grassy bluffs, canyons, pond shores
Elevation: 0–700 m

Distribution

V9 759-distribution-map.jpg

Introduced; B.C., Calif., Oreg., Wash., Asia (China), also in Europe, Pacific Islands (New Zealand)

Discussion

Cotoneaster lacteus sometimes is synonymized with C. coriaceus Franchet (for example, L. Lingdi and A. R. Brach 2003). As treated here, plants of this species are identified by their fertile shoots to 10 cm, scarcely shiny leaves to 120 × 60 mm with adaxial surfaces bulging between lateral veins, flowers to 150 in lax inflorescences, 6–9 mm diam. with cream petals, and larger, later-ripening fruits. Plants of C. coriaceus have fertile shoots to 5 cm, shiny leaves to 52 × 24 mm with flat adaxial surfaces, flowers to 50 in compact inflorescences, 9–10 mm diam. with white petals, and smaller, earlier-ripening fruits.

Selected References

None.

Lower Taxa

None.
... more about "Cotoneaster lacteus"
tomentose-villous +
pilose +  and not glaucous +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Jeanette Fryer +, Bertil Hylmö† +  and Peter F. Zika +
W. W. Smith +
compound +  and simple +
opposite +  and alternate +
cuneate +
15 cm150 mm <br />0.15 m <br /> (21 cm210 mm <br />0.21 m <br />) +
obovate to elliptic +
0.4 cm4 mm <br />0.004 m <br /> (15 cm150 mm <br />0.15 m <br />) +
distichous +  and spiraled +
yellowish +  and purple-black +
tomentose-villous +
pinkish +  and creamy white +
adnate +  and distinct +
strigose +  and tomentose +
Cream-flowered or late or Parney's cotoneaster +
B.C. +, Calif. +, Oreg. +, Wash. +, Asia (China) +, also in Europe +  and Pacific Islands (New Zealand) +
not +  and aggregated +
0–700 m +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
hairy +  and glabrous +
unisexual +  and bisexual +
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, disturbed forests, edges, urban waste ground, stonework, grassy bluffs, canyons, pond shores +
tomentose-strigose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flattened +  and domed +
crassinucellate +
persistent +
pinnate +  and entire +
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 /> (0.5 cm5 mm <br />0.005 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 +
1 +  and 5 +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering May–Jul +  and fruiting Nov–Apr. +
adnate +, free +, connate +  and distinct +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.86 cm8.6 mm <br />0.0086 m <br />) +
villous +  and not glaucous +
globose +, subglobose +  and obovoid +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.76 cm7.6 mm <br />0.0076 m <br />) +
Notes Roy. Bot. Gard. Edinburgh +
trigonous +  and planoconvex +
not arillate +
persistent +
free +  and distinct +
depressed +
4.5 cm45 mm <br />0.045 m <br /> (10 cm100 mm <br />0.1 m <br />) +
tomentose +  and strigose +
Introduced +
free +  and distinct +
branched +  and simple +
spreading +, arching +  and erect +
1 +  and 25 +
slender +
short-adnate +
inconspicuous +
deciduous +
distinct +
lateral +  and terminal +
elongate +
Ostinia +
Cotoneaster lacteus +
Cotoneaster +
species +
inconspicuous +
7 +  and 9 +
tree +  and shrub +