Pyrus pyrifolia

(Burman f.) Nakai

Bot. Mag. (Tokyo) 40: 564. 1926.

Common names: Chinese pear
Introduced
Basionym: Ficus pyrifolia Burman f. Fl. Indica, 226. 1768
Synonyms: Pyrus serotina Rehder
Treatment appears in FNA Volume 9. Treatment on page 481. Mentioned on page 480, 482.

Plants 70–150 dm. Branches purplish brown or dark-brown, tawny villous or tomentose when young, glabrescent; thorns usually absent. Leaves: petiole 3–4.5 cm, tomentose when young; blade ovate or ovate-elliptic, 7–12 × 4–6.5 cm, base rounded or subcordate, margins spinulose-serrate, apex acute, surfaces glabrous or brown-lanate when young. Pedicels 3.5–5 cm, pubescent when young. Flowers 25–35 mm diam.; sepals triangular-ovate, 5 mm, apex acuminate; petals white, ovate, 15–17 mm; ovaries 5-locular; styles 5. Pomes brownish with pale dots, subglobose, 20–25 mm diam.; sepals deciduous. 2n = 34.


Phenology: Flowering Apr.
Habitat: Old fields
Elevation: 50–400 m

Distribution

V9 811-distribution-map.jpg

Introduced; Ill., Va., W.Va., Asia (China), Asia (Laos), Asia (Vietnam)

Discussion

The type collection of the species is from Japan, but the plant is doubtfully native there.

Selected References

None.

Lower Taxa

None.
... more about "Pyrus pyrifolia"
glabrous or +  and sparsely densely tomentose +
Paul M. Catling +  and Gisèle Mitrow +
(Burman f.) Nakai +
persistent +
orangebrown +, reddish +  and gray +
compound +  and simple +
opposite +  and alternate +
subcordate +  and rounded +
Ficus pyrifolia +
9 cm90 mm <br />0.09 m <br /> (12 cm120 mm <br />0.12 m <br />) +
7 cm70 mm <br />0.07 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate-elliptic +  and ovate +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
? (?) +  and ? (?) +
4cm +  and 6.5cm +
young +, when +, tomentose +, villous +, tawny +, dark-brown +  and purplish brown +
glabrescent +
adnate +  and connate +
Chinese pear +
tomentose +  and glabrous +
umbel-like +
Ill. +, Va. +, W.Va. +, Asia (China) +, Asia (Laos) +  and Asia (Vietnam) +
not +  and aggregated +
50–400 m +
glabrous +  and hairy +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
dotted +, yellow +, green +, red +  and brown +
0.8 cm8 mm <br />0.008 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Old fields +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
crassinucellate +
deciduous +
crenulate +  and crenate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Flowering Apr. +
adnate +, free +, connate +  and distinct +
blackish +  and gray +
rectangular +
brownish with pale dots +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
subglobose +
Bot. Mag. (Tokyo) +
tomentose +  and glabrous +
umbel-like +
not arillate +
deciduous +
free +  and distinct +
triangular-ovate +
5 cm50 mm <br />0.05 m <br /> (?) +
Introduced +
free +  and distinct +
branched +  and simple +
1 +  and many +
not +  and persistent +
distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
brown-lanate +  and glabrous +
Pyrus serotina +
Pyrus pyrifolia +
species +
inconspicuous +
oval +  and pyramidal +