Prunus angustifolia |
Prunus tomentosa |
|
---|---|---|
Cherokee plum, Chickasaw plum, Chickasaw plume, Florida sand plum, sandhill plum |
Manchu cherry, Nanking cherry |
|
Habit | Shrubs or trees, often suckering, 10–50 dm, thorny. | Shrubs, not suckering, 10–20 dm, not thorny. |
Twigs | with axillary end buds, glabrous. |
with terminal end buds, densely hairy. |
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; petiole 2–7 mm, hairy, eglandular; blade obovate to oblong-elliptic, 3–6(–7.5) × 1.7–3.5(–4.7) cm, base obtuse to rounded, margins coarsely, singly to doubly serrate, teeth sharp, usually eglandular, sometimes glandular, glands dark, spheric, apex abruptly short-acuminate to acute, abaxial surface tomentose, adaxial rugose, hairy, sometimes sparsely so. |
Inflorescences | 2–4-flowered, umbellate fascicles. |
usually solitary flowers, sometimes 2-flowered fascicles. |
Pedicels | 3–10 mm, glabrous. |
0–5 mm, hairy. |
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. |
blooming before or at leaf emergence; hypanthium tubular, 3.5–6 mm, glabrous or sparsely hairy (especially at bases) externally; sepals spreading, ovate, 2.5–3.5 mm, margins serrate, sometimes glandular, abaxial surface hairy, adaxial glabrous; petals white to pale pink (pink in bud), obovate or elliptic to suborbiculate, 9–13 mm; ovaries glabrous proximally, villous distally. |
Drupes | red to yellow, lightly glaucous, globose to ellipsoid, 15–20 mm, glabrous; mesocarps fleshy; stones ovoid, ± flattened. |
red, globose, 8–15 mm, sparsely hairy; mesocarps fleshy; stones ellipsoid, not flattened. |
2n | = 16. |
= 16. |
Prunus angustifolia |
Prunus tomentosa |
|
Phenology | Flowering Feb–Apr; fruiting May–Aug. | Flowering Apr–May; fruiting Jun–Jul. |
Habitat | Thickets, upland sandy soil, open woods, sand dunes, fence rows, pastures, roadsides, stream bottoms | Roadsides, fencerows, vacant lots, riparian woods |
Elevation | 0–600 m (0–2000 ft) | 50–500 m (200–1600 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
|
IA; IL; MD; MI; MN; NE; NY; OH; PA; SD; UT; MB; ON; SK; Asia [Introduced in North America] |
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.) |
Prunus tomentosa is cultivated as a landscape plant in hedges and as a background shrub because of its spreading habit and pale pink to white petals. It produces edible fruits that are said to make excellent jelly and juice. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 381. | FNA vol. 9, p. 372. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus |
Sibling taxa | ||
Synonyms | P. angustifolia subsp. varians, P. angustifolia var. watsonii | |
Name authority | Marshall: Arbust. Amer., 111. (1785) | Thunberg: in J. A. Murray, Syst. Veg. ed. 14, 464. (1784) |
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