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cherry plum, myrobalan, myrobalan plum, purple leaf plum

Portugal laurel

Habit Trees, sometimes suckering, 40–80 dm, not or slightly thorny. Shrubs or trees, not suckering, 30–80(–200) dm, not thorny.
Twigs

with axillary end buds, glabrous.

with terminal end buds, glabrous.

Leaves

deciduous;

petiole 5–20 mm, glabrous except for a few hairs on adaxial surface, eglandular;

blade ovate, elliptic, or obovate, 3–7 × 1.5–3.5 cm, base obtuse, margins singly to doubly crenate-serrate, teeth blunt, glandular, apex obtuse to acute, abaxial surface hairy along midribs and veins, adaxial glabrous.

persistent;

petiole 14–20 mm, glabrous, eglandular;

blade elliptic, oblong-ovate, or ovate-lanceolate, 6–13 × 2.5–7 cm, base obtuse to rounded, margins crenate-dentate, teeth blunt, glandular, apex acuminate, surfaces glabrous, abaxial eglandular, if glands present, restricted to margins.

Inflorescences

usually solitary flowers, sometimes 2-flowered fascicles.

18–60[–100]-flowered, racemes;

central axes 100–280 mm, leafless at bases.

Pedicels

(4–)10–18 mm, glabrous.

7–15(–22) mm, glabrous.

Flowers

blooming before leaf emergence;

hypanthium campanulate, 2–4 mm, glabrous externally;

sepals reflexed to spreading, oblong-ovate, 2–4 mm, margins glandular-toothed to nearly entire, eciliate, abaxial surface glabrous, adaxial hairy at bases;

petals white (reddish pink in cultivars), elliptic to suborbiculate, 7–14 mm;

ovaries glabrous.

blooming after leaf emergence;

hypanthium cupulate, 2.5–3.5 mm, glabrous externally;

sepals spreading to reflexed, semicircular, 1–1.5 mm, margins entire, ± ciliate, abaxial surface glabrous, adaxial hairy;

petals white, suborbiculate to obovate, 4–7 mm;

ovaries glabrous.

Drupes

purple-red to yellow, sometimes glaucous, ovoid, ellipsoid, or globose, 15–30 mm, glabrous;

mesocarps fleshy;

stones ellipsoid to ovoid, ± to strongly flattened.

dark purple, ovoid to conic-ovoid, 8–12 mm, glabrous;

mesocarps fleshy to leathery;

stones ovoid, not flattened.

2n

= 16.

= 32, 64.

Prunus cerasifera

Prunus lusitanica

Phenology Flowering Feb–Apr; fruiting Jun–Aug. Flowering May–Jul; fruiting Aug–Nov.
Habitat Roadsides, stream banks, canyons, chaparral Disturbed sites, thickets, urban forests
Elevation 0–900 m (0–3000 ft) 0–400 m (0–1300 ft)
Distribution
from FNA
CA; ID; MA; MD; NH; NY; OH; OR; PA; WA; BC; ON; se Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA; BC; Europe [Introduced in North America]
[BONAP county map]
Discussion

The purple-leaved, pink-flowered cultivars of Prunus cerasifera are especially popular for ornamental use. The earliest purple form was introduced into European gardens about 1880 by M. Pissard, gardener to the Shah of Iran. Prunus cerasifera is widely used as a rootstock for commercial plums.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 9, p. 375. FNA vol. 9, p. 363.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus
Sibling taxa
P. americana, P. andersonii, P. angustifolia, P. armeniaca, P. avium, P. caroliniana, P. cerasus, P. domestica, P. dulcis, P. emarginata, P. eremophila, P. fasciculata, P. fremontii, P. geniculata, P. glandulosa, P. gracilis, P. havardii, P. hortulana, P. ilicifolia, P. laurocerasus, P. lusitanica, P. mahaleb, P. maritima, P. mexicana, P. minutiflora, P. murrayana, P. myrtifolia, P. nigra, P. padus, P. pensylvanica, P. persica, P. pumila, P. rivularis, P. serotina, P. speciosa, P. spinosa, P. subcordata, P. subhirtella, P. texana, P. tomentosa, P. umbellata, P. virginiana, P. yedoensis
P. americana, P. andersonii, P. angustifolia, P. armeniaca, P. avium, P. caroliniana, P. cerasifera, P. cerasus, P. domestica, P. dulcis, P. emarginata, P. eremophila, P. fasciculata, P. fremontii, P. geniculata, P. glandulosa, P. gracilis, P. havardii, P. hortulana, P. ilicifolia, P. laurocerasus, P. mahaleb, P. maritima, P. mexicana, P. minutiflora, P. murrayana, P. myrtifolia, P. nigra, P. padus, P. pensylvanica, P. persica, P. pumila, P. rivularis, P. serotina, P. speciosa, P. spinosa, P. subcordata, P. subhirtella, P. texana, P. tomentosa, P. umbellata, P. virginiana, P. yedoensis
Name authority Ehrhart: Gartenkalender 4: 192. (1784) Linnaeus: Sp. Pl. 1: 473. (1753)
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