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desert almond, desert peach, wild almond

desert plum, Mojave desert plum

Habit Shrubs, suckering, much branched, 10–20(–30) dm, thorny. Shrubs, suckering unknown, much branched, 10–25 dm, weakly thorny.
Twigs

with axillary end buds, glabrous or canescent.

with axillary end buds, canescent.

Leaves

deciduous;

sessile;

blade oblanceolate to linear, 0.5–2 × 0.1–0.2(–0.4) cm, base long-attenuate, margins nearly entire or obscurely and remotely serrulate in distal 1/3, teeth blunt to sharp, sometimes glandular, apex rounded to acute, surfaces puberulent or glabrous or low-papillate (var. punctata).

deciduous;

petiole 0.5–3(–5) mm, hairy, eglandular;

blade ovate, obovate, or spatulate, 0.5–2(–3) × 0.2–1(–2) cm, base cuneate to obtuse, margins irregularly serrate, teeth usually sharp, eglandular, sometimes blunt, obscurely glandular, apex obtuse to rounded, often mucronate, surfaces hairy.

Inflorescences

solitary flowers or 2-flowered fascicles.

solitary flowers or 2-flowered fascicles.

Pedicels

0–4 mm, glabrous.

0–3 mm, puberulent.

Flowers

unisexual, plants dioecious, blooming at leaf emergence;

hypanthium campanulate, 1.5–3 mm, glabrous externally;

sepals erect-spreading, triangular, 0.7–1 mm, margins entire, surfaces glabrous;

petals white to yellowish, elliptic, obovate, or suborbiculate, 1.4–2.5(–4) mm;

ovaries hairy.

unisexual, plants dioecious, blooming at leaf emergence;

hypanthium campanulate, 2–4 mm, hairy externally;

sepals erect, triangular, 1–2 mm, margins entire, sparsely ciliate, abaxial surface densely hairy, adaxial glabrous or slightly hairy;

petals white, elliptic, rhombic, ovate, or suborbiculate, 2.5–6 mm, abaxial surfaces hairy;

ovaries hairy.

Drupes

gray to red-brown, ovoid, ± compressed, 7–15 mm, densely puberulent;

hypanthium tardily deciduous;

mesocarps leathery to dry;

stones ovoid, ± flattened.

yellowish orange, obovoid to ovoid, 9–16 mm, velutinous;

mesocarps leathery to dry;

stones subglobose to ovoid, slightly flattened.

Prunus fasciculata

Prunus eremophila

Phenology Flowering Mar–Apr; fruiting May–Jun.
Habitat Desert washes, rocky slopes
Elevation 900–1200 m (3000–3900 ft)
Distribution
from FNA
AZ; CA; NV; UT; nw Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

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

Of conservation concern.

Prunus eremophila is endemic to the southern Mojave Desert and has so far been collected only from the East Mojave Natural Preserve in eastern San Bernardino County.

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

Key
1. Leaf blades sparsely to densely puberulent, not papillate.
var. fasciculata
1. Leaf blades glabrous, sometimes papillate.
var. punctata
Source FNA vol. 9, p. 370. FNA vol. 9, p. 371.
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. cerasifera, P. cerasus, P. domestica, P. dulcis, P. emarginata, P. eremophila, 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. 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
Subordinate taxa
P. fasciculata var. fasciculata, P. fasciculata var. punctata
Synonyms Emplectocladus fasciculatus
Name authority (Torrey) A. Gray: Proc. Amer. Acad. Arts 10: 70. (1874) Prigge: Madroño 49: 285, figs. 1, 2. (2003)
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