Prunus fasciculata |
Prunus pumila |
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desert almond, desert peach, wild almond |
cerisier des sables, dwarf sand plum, sand cherry |
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Habit | Shrubs, suckering, much branched, 10–20(–30) dm, thorny. | Shrubs, sometimes suckering, 1–15(–25) dm, not thorny. | ||||||||||||||||
Twigs | with axillary end buds, glabrous or canescent. |
with terminal end buds, glabrous or sparsely to densely puberulent (var. susquehanae). |
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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 2–10(–13) mm, glabrous or hairy only when young, sometimes glandular distally or on margins at bases of blades, glands 1–2; blade elliptic, oblanceolate, or obovate, 2.5–8 × 0.8–3 cm, base obtuse, cuneate, or long-attenuate, margins crenulate-serrulate to serrate in distal 1/2–2/3, teeth sharp or blunt, callus-tipped, sometimes glandular, apex short-acuminate to rounded, surfaces glabrous. |
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Inflorescences | solitary flowers or 2-flowered fascicles. |
2–5-flowered, umbellate fascicles. |
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Pedicels | 0–4 mm, glabrous. |
3–19 mm, glabrous. |
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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. |
blooming before leaf emergence; hypanthium campanulate, 1.7–3 mm, glabrous externally; sepals erect to reflexed, semicircular, 1.3–2.8 mm, margins glandular-toothed, surfaces glabrous; petals white, oblanceolate, oblong, or suborbiculate, 3–9 mm; ovaries glabrous. |
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Drupes | gray to red-brown, ovoid, ± compressed, 7–15 mm, densely puberulent; hypanthium tardily deciduous; mesocarps leathery to dry; stones ovoid, ± flattened. |
dark purple to nearly black, subglobose or broadly ellipsoid, 6–12 mm, glabrous; mesocarps fleshy; stones subglobose, ovoid, or fusiform, not flattened. |
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Prunus fasciculata |
Prunus pumila |
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Distribution |
AZ; CA; NV; UT; nw Mexico
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AR; CO; CT; DE; IA; IL; IN; KS; MA; MD; ME; MI; MN; MT; NC; ND; NE; NH; NJ; NY; OH; OR; PA; RI; SD; TN; UT; VA; VT; WI; WV; WY; MB; NB; ON; QC; SK
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 4 (4 in the flora). Opinion has varied as to whether Prunus pumila is best treated as one variable species (for example, H. Groh and H. A. Senn 1940; H. A. Gleason 1952; J. R. Rohrer 2000) or as two, three, or four separate species (for example, W. F. Wight 1915; M. L. Fernald 1923b; P. M. Catling et al. 1999). The plants vary in stem posture, twig indument, leaf shape, fruit size and taste, pit size and shape, and ecologic preference. Even though the morphologic characters show almost continuous variation, four varieties are recognized here based largely on differences in ecologic habitat and geographic range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 370. | FNA vol. 9, p. 373. | ||||||||||||||||
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Emplectocladus fasciculatus | |||||||||||||||||
Name authority | (Torrey) A. Gray: Proc. Amer. Acad. Arts 10: 70. (1874) | Linnaeus: Mant. Pl. 1: 75. (1767) | ||||||||||||||||
Web links |
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