Prunus angustifolia |
Prunus fasciculata |
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Cherokee plum, Chickasaw plum, Chickasaw plume, Florida sand plum, sandhill plum |
desert almond, desert peach, wild almond |
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Habit | Shrubs or trees, often suckering, 10–50 dm, thorny. | Shrubs, suckering, much branched, 10–20(–30) dm, thorny. | ||||
Twigs | with axillary end buds, glabrous. |
with axillary end buds, glabrous or canescent. |
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Leaves | deciduous; petiole 2–14 mm, usually sparsely hairy on adaxial surface, rarely glabrous or hairy on both surfaces, usually eglandular, sometimes glandular distally, glands 1–2; blade lanceolate to narrowly elliptic, usually folded along midribs, often ± falcate, 1.5–6 × 0.8–2 cm, base cuneate to obtuse, margins crenulate-serrulate, teeth blunt, glandular, glands reddish orange, conic, apex acute, abaxial surface glabrate with hairs along midribs and major veins, adaxial glabrous. |
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). |
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Inflorescences | 2–4-flowered, umbellate fascicles. |
solitary flowers or 2-flowered fascicles. |
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Pedicels | 3–10 mm, glabrous. |
0–4 mm, glabrous. |
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Flowers | blooming before, sometimes at, leaf emergence; hypanthium campanulate, 1.5–3 mm, usually glabrous, rarely hairy, externally; sepals erect to spreading, ovate, 1–2 mm, margins entire, sparsely ciliate, abaxial surface glabrous, adaxial hairy; petals white, suborbiculate to obovate, 3–6 mm; ovaries glabrous. |
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. |
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Drupes | red to yellow, lightly glaucous, globose to ellipsoid, 15–20 mm, glabrous; mesocarps fleshy; stones ovoid, ± flattened. |
gray to red-brown, ovoid, ± compressed, 7–15 mm, densely puberulent; hypanthium tardily deciduous; mesocarps leathery to dry; stones ovoid, ± flattened. |
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2n | = 16. |
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Prunus angustifolia |
Prunus fasciculata |
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Phenology | Flowering Feb–Apr; fruiting May–Aug. | |||||
Habitat | Thickets, upland sandy soil, open woods, sand dunes, fence rows, pastures, roadsides, stream bottoms | |||||
Elevation | 0–600 m (0–2000 ft) | |||||
Distribution |
AL; AR; CO; DC; DE; FL; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NE; NJ; NM; OK; PA; SC; TN; TX; VA; WV
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AZ; CA; NV; UT; nw Mexico
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Discussion | A naturalized population of Prunus angustifolia in Santa Barbara County, California, has been extirpated. Prunus angustifolia is one of the more distinctive plum species in North America. The leaves are relatively small, usually folded along their midribs, and have relatively large, reddish orange, conic glands along the margins. When it hybridizes with other plums, the hybrids often have distinctive characteristics and have been named as species more often than hybrids not involving P. angustifolia: P. ×orthosepala Koehne (angustifolia × americana), P. ×slavinii E. J. Palmer ex Rehder (angustifolia × gracilis), P. ×utahensis Koehne (angustifolia × pumila var. besseyi); see also discussion under 42. P. rivularis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 381. | FNA vol. 9, p. 370. | ||||
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | P. angustifolia subsp. varians, P. angustifolia var. watsonii | Emplectocladus fasciculatus | ||||
Name authority | Marshall: Arbust. Amer., 111. (1785) | (Torrey) A. Gray: Proc. Amer. Acad. Arts 10: 70. (1874) | ||||
Web links |