Photinia villosa

(Thunberg) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 2: 631. 1825.

Common names: Smooth oriental photinia
Introduced
Basionym: Crataegus villosa Thunberg in J. A. Murray, Syst. Veg. ed. 14, 465. 1784 Undefined fl. Jap. 204. 1784
Synonyms: Pourthiaea villosa (Thunberg) Decaisne
Treatment appears in FNA Volume 9. Treatment on page 490. Mentioned on page 445, 489, 491.

Plants 20–50 dm. Leaves deciduous; petiole 2–6 mm, villous; blade obovate, oblong-obovate, or elliptic, 3–8 × 2–4 cm, herbaceous, base cuneate, margins densely sharply serrate distally, lateral-veins 5–7 pairs, apex caudate, surfaces initially white-villous, at maturity abaxial surfaces villous only along veins, adaxial glabrescent or glabrate. Inflorescences 3–6 cm diam. Pedicels with warty lenticels. Flowers 7–12 mm diam.; petals suborbiculate, 4–5 mm, adaxially pilose near base.


Phenology: Flowering late Mar–Apr.
Habitat: Fencerows, thickets, disturbed sites
Elevation: 20–200 m

Distribution

V9 826-distribution-map.jpg

Introduced; Del., D.C., N.H., N.J., N.Y., Ohio, Pa., Wash., Asia (China), Asia (Japan), Asia (Korea)

Discussion

About five varieties of Photinia villosa are recognized in Asia, differing mainly in persistence of vestiture, leaf shape, and number of flowers per inflorescence. At least some of the plants offered for sale in the United States apparently are var. sinica Rehder & E. H. Wilson, but cultivars have been developed, and a formal identification at varietal rank would be speculative, based on characters apparently of overlapping morphology.

Selected References

None.

Lower Taxa

None.
... more about "Photinia villosa"
glabrate +  and glabrescent +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Guy L. Nesom +
(Thunberg) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus villosa +  and Undefined fl. +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elliptic +, oblong-obovate +  and obovate +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
? (?) +  and ? (?) +
2cm +  and 4cm +
free +, adnate +  and connate +
pilose +  and glabrous +
Smooth oriental photinia +
Del. +, D.C. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, Wash. +, Asia (China) +, Asia (Japan) +  and Asia (Korea) +
hard-shelled +
not +  and aggregated +
20–200 m +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
black +  and red +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Fencerows, thickets, disturbed sites +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
subumbellate +  and 150-300-flowered +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
pendulous +  and erect +
glabrate +  and glabrous +
crassinucellate +
deciduous +
toothed +, unlobed +  and lobed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
2 +  and 1 +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering late Mar–Apr. +
adnate +, free +, connate +  and distinct +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
not arillate +
persistent +
free +  and distinct +
spreading +  and incurved +
triangular +
Introduced +
free +  and distinct +
branched +  and simple +
1 +  and 15 +
capitate +  and truncate +
deciduous +
connate +  and distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
white-villous +
Pourthiaea villosa +
Photinia villosa +
Photinia +
species +
inconspicuous +