Pyracantha crenulata

(D. Don) M. Roemer

Fam. Nat. Syn. Monogr. 3: 220. 1847.

Introduced
Basionym: Mespilus crenulata D. Don Prodr. Fl. Nepal., 238. 1825
Synonyms: Cotoneaster crenulatus (D. Don) K. Koch Crataegus crenulata Roxburgh C. pyracantha var. crenulata (D. Don) Loudon Pyracantha chinensis M. Roemer P. crenulata var. kansuensis Rehder
Treatment appears in FNA Volume 9. Treatment on page 470. Mentioned on page 469, 471.

Plants 10–50 dm. Stems: thorns usually abundant; young twigs brown-hairy, glabrescent later. Leaves: stipules 2–4 mm; petiole 2–6 mm; blade elliptic, oblong, or oblanceolate, sometimes ovatelanceolate, 1–7 × 0.4–1.8 cm, base rounded to cuneate, margins crenulate to sparsely serrulate, apex acute or short-apiculate, sometimes obtuse, surfaces glabrous or nearly so. Inflorescences 2–5 cm diam.; peduncles brown-hairy or glabrous. Pedicels 4–10 mm, glabrous. Flowers 6–10 mm diam.; hypanthium glabrous; sepals triangular, 1 mm, apex acute; petals orbiculate, 3–5 mm, apex rounded. Pomes orange-yellow, orange, or red, subglobose, 3–8 mm diam.; pedicels 5–12 mm.


Phenology: Flowering Mar–May; fruiting Aug–Oct.
Habitat: Canyons
Elevation: 0–1500 m

Distribution

V9 794-distribution-map.jpg

Introduced; Calif., Asia, also in Europe, e Asia (Japan), Africa (South Africa), Pacific Islands (New Zealand), Australia

Discussion

Pyracantha crenulata is native to southwestern China, India, Kashmir, and Nepal. A dwarf variant has been called var. kansuensis and is reported as native to China (A. J. Rehder 1949; Gu C. Z. and S. A. Spongberg 2003b); it is distinguished by its short stature (rarely exceeding 2 m), abundantly thorny branches, small leaf blades (1–2.5 × 0.4–0.8 cm), and small (3–5 mm diam.) red pomes. Its presence among the naturalized records of P. crenulata in California is suggested, but its morphology is not clearly distinctive. G. L. Nesom (2010) suggested P. fortuneana was not distinct from P. crenulata.

Selected References

None.

Lower Taxa

None.
... more about "Pyracantha crenulata"
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Ronald W. Lance +  and Peter F. Zika +
(D. Don) M. Roemer +
fissured +
compound +  and simple +
opposite +  and alternate +
rounded +  and cuneate +
Mespilus crenulata +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
ovatelanceolate +, oblanceolate +, oblong +  and elliptic +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.4cm +  and 1.8cm +
lanceolate +
adnate +  and distinct +
tomentose +  and glabrous +
Calif. +, Asia +, also in Europe +, e Asia (Japan) +, Africa (South Africa) +, Pacific Islands (New Zealand) +  and Australia +
not +  and aggregated +
0–1500 m +
tomentose +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
yellow +, orange-red +  and red +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Canyons +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
crassinucellate +
late-deciduous +  and persistent +
pinnate +, entire +, serrulate +  and serrate +
tomentose +  and glabrous +
crenulate +  and sparsely serrulate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
tomentose +  and glabrous +
flat-topped +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glabrous +  and brown-hairy +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
0.3 cm3 mm <br />0.003 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 Mar–May +  and fruiting Aug–Oct. +
adnate +, free +, connate +  and distinct +
red +, orange +  and orange-yellow +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
subglobose +
Fam. Nat. Syn. Monogr. +
not arillate +
persistent +
free +  and distinct +
incurved +, erect +  and spreading +
triangular +
1 cm10 mm <br />0.01 m <br /> (?) +
Introduced +
free +  and distinct +
branched +  and simple +
straight +
1 +  and 3 +
geniculate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
persistent +
distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
nearly +  and glabrous +
Cotoneaster crenulatus +, Crataegus crenulata +, C. pyracantha var. crenulata +, Pyracantha chinensis +  and P. crenulata var. kansuensis +
Pyracantha crenulata +
Pyracantha +
species +
tomentose +  and glabrous +
inconspicuous +
glabrescent +  and brown-hairy +
reclining +  and spreading +