Prunus fremontii |
Prunus hortulana |
|
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desert apricot |
Hortulan or wild goose plum, Hortulan plum |
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Habit | Shrubs, suckering unknown, much branched, 10–40 dm, thorny. | Trees, rarely suckering, 40–100 dm, moderately thorny. |
Twigs | with axillary end buds, glabrous. |
with axillary end buds, glabrous. |
Leaves | deciduous; petiole 1–7 mm, glabrous, eglandular; blade elliptic, ovate, or suborbiculate, 0.6–3 × 0.5–2 cm, base obtuse to rounded, subcordate, or truncate, margins obscurely crenulate, crenulate-serrulate, or serrate, teeth blunt, glandular, apex usually obtuse to rounded, sometimes emarginate, surfaces glabrous. |
deciduous; petiole 6–20 mm, hairy on adaxial surface, usually glandular distally, glands 1–5; blade narrowly elliptic, lanceolate, oblanceolate, or oblong-obovate, (5–)7–11(–13) × (2–)3–5.5 cm, base obtuse to rounded, margins singly to doubly crenate-serrate, teeth blunt, glandular, glands inconspicuous, blackish, apex long-acuminate, abaxial surface ± hairy along midribs and veins, adaxial glabrous or with hairs along midribs. |
Inflorescences | 1–3-flowered, umbellate fascicles. |
2–4-flowered, umbellate fascicles. |
Pedicels | 2–12 mm, glabrous. |
8–20 mm, glabrous. |
Flowers | blooming at leaf emergence; hypanthium campanulate, 2–4 mm, glabrous externally; sepals erect-spreading, semicircular to ovate, 1.2–4 mm, margins glandular-toothed, ciliate, abaxial surface glabrous, adaxial hairy; petals usually white, sometimes pinkish rose, elliptic, obovate, or suborbiculate, 3–10 mm; ovaries hairy. |
blooming before or at leaf emergence; hypanthium campanulate, 2–3 mm, glabrous externally; sepals erect to reflexed, ovate, 1.5–3 mm, margins glandular-toothed, abaxial surface glabrous or sparsely hairy, adaxial densely hairy at bases; petals white, obovate, 4–9 mm; ovaries glabrous. |
Drupes | yellowish, ellipsoid-ovoid, 8–15 mm, densely puberulent; mesocarps leathery to dry (splitting); stones ovoid, ± flattened. |
red to yellowish with white dots, not or only slightly glaucous, globose, 20–30(–40) mm, glabrous; mesocarps fleshy; stones ovoid-ellipsoid, ± flattened. |
2n | = 16. |
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Prunus fremontii |
Prunus hortulana |
|
Phenology | Flowering Jan–Mar; fruiting Apr–Jun. | Flowering Apr–May; fruiting Aug–Sep. |
Habitat | Dry, sandy or rocky slopes, canyons, desert, chaparral, pinyon-juniper woodlands | Roadside thickets, flood plains, open woodlands |
Elevation | 200–1500 m (700–4900 ft) | 50–500 m (200–1600 ft) |
Distribution |
CA; Mexico (Baja California)
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AR; IA; IL; IN; KS; KY; MA; MI; MO; NE; OH; OK; TN; VA; WV
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Discussion | Prunus fremontii is known only from the western edge of the Sonoran Desert. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 9, p. 373. | FNA vol. 9, p. 382. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus |
Sibling taxa | ||
Synonyms | P. eriogyna | P. hortulana var. mineri |
Name authority | S. Watson: in W. H. Brewer et al., Bot. California 2: 442. (1880) | L. H. Bailey: Gard. & Forest 5: 90. (1892) |
Web links |