Photinia glabra

(Thunberg) Franchet & Savatier

Enum. Pl. Jap. 1: 141. 1873.

Common names: Japanese photinia
Introduced
Basionym: Crataegus glabra Thunberg in J. A. Murray, Syst. Veg. ed. 14, 465. 1784 Undefined fl. Jap. 205. 1784
Treatment appears in FNA Volume 9. Treatment on page 489. Mentioned on page 490.

Plants 20–50 dm. Leaves persistent; petiole 10–30 mm, glabrous; blade elliptic to elliptic-obovate or elliptic-oblong, 5–9 × 2.5–5 cm, coriaceous, base cuneate, margins crenate-serrulate, lateral-veins 10–15 (–18) pairs, apex abruptly acuminate, surfaces glabrous. Inflorescences 4–10 cm diam. Pedicels without lenticels. Flowers 7–8 mm diam.; petals obovate, 2–3 mm, adaxially white-tomentose proximally.


Phenology: Flowering late Mar–Apr.
Habitat: Fencerows, thickets, disturbed sites
Elevation: 20–100 m

Distribution

V9 824-distribution-map.jpg

Introduced; La., Asia (China), Asia (Japan), Asia (Myanmar), Asia (Thailand), Pacific Islands (New Zealand), Australia

Discussion

As noted by C. Kalkman (1973), Lindley cited Crataegus glabra as a synonym of his proposed new species Photinia serrulata. The concept of P. serrulata by Lindley was not the same as that of C. glabra by Thunberg, and P. serrulata Lindley has persisted as a name in use for P. serratifolia. In any case, the publication of P. serrulata was superfluous and illegitimate.

Photinia ×fraseri Dress, or 'red tip,' is a popular hybrid cultivar between P. glabra and P. serrulata, valued especially for its brilliant burgundy red young leaves, which mature to green over weeks through shades of copper red. Shrubs are 3–4(–4.5) m; leaf blades elliptic to oblong-obovate or elliptic-obovate, 7–12 × 3–4(–4.5) cm, basally cuneate, with petioles 1–1.5(–2.3) cm. The leaves are smaller than those of P. serratifolia but tend to be longer and slightly narrower, with sharper teeth, than those of P. glabra. Apparently, fruit set is very low and the plants have not been recorded as escaping cultivation. In Texas, P. ×fraseri produces an abundant flush of new leaves in late October through November, when neither of the parents is doing so.

Selected References

None.

Lower Taxa

None.
... more about "Photinia glabra"
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Guy L. Nesom +
(Thunberg) Franchet & Savatier +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus glabra +  and Undefined fl. +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
elliptic +  and elliptic-obovate or elliptic-oblong +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
2.5cm +  and 5cm +
free +, adnate +  and connate +
pilose +  and glabrous +
Japanese photinia +
La. +, Asia (China) +, Asia (Japan) +, Asia (Myanmar) +, Asia (Thailand) +, Pacific Islands (New Zealand) +  and Australia +
hard-shelled +
not +  and aggregated +
20–100 m +
0.7 cm7 mm <br />0.007 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 +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
pendulous +  and erect +
glabrate +  and glabrous +
crassinucellate +
persistent +
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 +
white-tomentose +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering late Mar–Apr. +
adnate +, free +, connate +  and distinct +
Enum. Pl. Jap. +
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 +
Stranvaesia +
Photinia glabra +
Photinia +
species +
inconspicuous +