Photinia serratifolia

(Desfontaines) Kalkman

Blumea 21: 424. 1973.

Common names: Chinese photinia or hawthorn
IllustratedIntroduced
Basionym: Crataegus serratifolia Desfontaines Tabl. École Bot. ed. 3, 288, 408. 1829
Treatment appears in FNA Volume 9. Treatment on page 490. Mentioned on page 489.

Plants 40–60 (–120) dm. Leaves persistent; petiole 20–40 mm, villous adaxially when young, glabrescent; blade narrowly elliptic to oblong, obovate-elliptic, or narrowly obovate, (6–) 9–20 × 3–6.5 cm, coriaceous, base rounded or broadly cuneate, margins sharply serrate to rarely inconspicuously toothed or entire, lateral-veins 20–30 pairs, apex acuminate, abaxial surfaces slightly villous along veins when young, quickly glabrescent. Inflorescences 10–18 cm diam. Pedicels without lenticels. Flowers 6–8 mm diam.; petals suborbiculate, 3–4 mm, glabrous or villous.


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

Distribution

V9 825-distribution-map.jpg

Introduced; Ala., Ga., La., Miss., Tex., Asia

Discussion

Four varieties of Photinia serratifolia are recorded in China; var. serratifolia occurs in the flora area and has leaf margins prominently serrate, entire only near the base (versus entire to shallowly and inconspicuously serrate in other varieties). Cultivars have been developed, however, differing in growth form, coloration, and leaf margins, and a formal identification to variety is problematic. Chinese photinia can grow larger than P. ×fraseri (‘red tip’) or Japanese photinia, and flowers appear before those of either.

Selected References

None.

Lower Taxa

None.
... more about "Photinia serratifolia"
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Guy L. Nesom +
(Desfontaines) Kalkman +
compound +  and simple +
opposite +  and alternate +
cuneate +  and rounded +
Crataegus serratifolia +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
9 cm90 mm <br />0.09 m <br /> (20 cm200 mm <br />0.2 m <br />) +
narrowly elliptic +  and oblong obovate-elliptic or narrowly obovate +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
3cm +  and 6.5cm +
free +, adnate +  and connate +
pilose +  and glabrous +
Chinese photinia or hawthorn +
Ala. +, Ga. +, La. +, Miss. +, Tex. +  and Asia +
hard-shelled +
not +  and aggregated +
20–200 m +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 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 +
10 cm100 mm <br />0.1 m <br /> (18 cm180 mm <br />0.18 m <br />) +
pendulous +  and erect +
glabrate +  and glabrous +
crassinucellate +
persistent +
pinnate +, entire +, serrate +  and serrulate +
sharply serrate +  and rarely inconspicuously toothed or entire +
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 +
villous +  and glabrous +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrescent +  and villous +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering late Mar–Apr. +
adnate +, free +, connate +  and distinct +
not arillate +
persistent +
free +  and distinct +
spreading +  and incurved +
triangular +
Illustrated +  and Introduced +
free +  and distinct +
branched +  and simple +
1 +  and 15 +
capitate +  and truncate +
deciduous +
connate +  and distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
Stranvaesia +
Photinia serratifolia +
Photinia +
species +
inconspicuous +
glabrescent +