Prunus persica |
Prunus havardii |
|
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peach, pêcher, unknown |
Havard's almond, Havard's plum |
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Habit | Trees, not suckering, 30–100 dm, not thorny. | Shrubs, suckering unknown, much branched, 10–20 dm, thorny. |
Twigs | with terminal end buds, glabrous. |
with axillary end buds, puberulent. |
Leaves | deciduous; petiole 5–10(–15) mm, not winged, glabrous, sometimes glandular distally, glands 1–4, discoid; blade oblong to lanceolate, folded along midribs, often falcate, (5–)7–15 × 2–4.5 cm, base cuneate to obtuse, margins crenulate-serrulate, teeth blunt, glandular, apex acuminate, surfaces glabrous. |
deciduous; petiole 1–3 mm, glabrous or puberulent, eglandular; blade rhombic, obovate, or fan-shaped, 0.5–1.6(–2) × 0.2–0.8(–1.4) cm, base broadly obtuse or rounded to nearly truncate, margins serrate or dentate in distal 1/2, teeth blunt to sharp, some callus-tipped, rarely glandular, apex rounded to obtuse, surfaces puberulent. |
Inflorescences | usually solitary flowers, sometimes 2-flowered fascicles. |
solitary flowers. |
Pedicels | 0–3 mm, glabrous. |
0 mm. |
Flowers | blooming before leaf emergence; hypanthium cupulate, 4–5 mm, glabrous externally; sepals spreading, oblong-ovate, 3.5–5 mm, margins entire, ciliate, abaxial surface hairy (especially along margins), adaxial glabrous; petals dark pink, obovate to suborbiculate, 10–17 mm; ovaries hairy. |
unisexual, plants dioecious, blooming at leaf emergence; hypanthium campanulate, 2.5–3 mm, glabrous externally; sepals spreading to reflexed, triangular, 0.7–1 mm, margins entire, sparsely ciliate, surfaces glabrate; petals white, obovate, 2 mm; ovaries hairy. |
Drupes | yellow to orange tinged with red, globose, 40–80 mm, velutinous (glabrous in nectarines); mesocarps fleshy; stones ellipsoid, strongly flattened, deeply pitted, furrowed. |
reddish brown, ovoid, 8–11 mm, puberulent; hypanthium tardily deciduous; mesocarps leathery to dry (splitting); stones ovoid, slightly flattened. |
2n | = 16. |
|
Prunus persica |
Prunus havardii |
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Phenology | Flowering Feb–Apr; fruiting Jun–Aug. | Flowering Apr–Jun; fruiting Jun–Aug. |
Habitat | Roadsides, fencerows, abandoned farms, streamsides, canyons | Draws, dry rocky slopes of canyons, limestone soil, igneous rock |
Elevation | 0–2300 m (0–7500 ft) | 700–1700 m (2300–5600 ft) |
Distribution |
AL; AR; AZ; CA; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; MS; NC; NJ; NY; OH; OK; OR; PA; RI; SC; TN; TX; UT; VA; WI; WV; NS; ON; e Asia [Introduced in North America]
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TX; Mexico (Chihuahua) |
Discussion | Peaches are cultivated throughout much of North America. Commercial production is diffuse, occurring in over half of the lower 48 states as well as in southern British Columbia and southern Ontario. Freestone peaches for fresh eating come largely from California, Georgia, New Jersey, North Carolina, Pennsylvania, and South Carolina; most clingstones are used for canning and are grown in California. Nectarines are a variety with hairless skin. The fruits are popular on picnics, and peach saplings are commonly encountered anywhere pits are discarded. Escapes are usually short-lived; some escapes form naturalized populations. Double-flowered cultivars are used ornamentally. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Prunus havardii is endemic to the Chihuahuan Desert of trans-Pecos Texas and across the Rio Grande in Mexico, with most collections from the Big Bend area. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 371. | FNA vol. 9, p. 371. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus | Rosaceae > subfam. Amygdaloideae > tribe Amygdaleae > Prunus |
Sibling taxa | ||
Synonyms | Amygdalus persica, Persica vulgaris | Amygdalus havardii |
Name authority | (Linnaeus) Batsch: Beytr. Entw. Gewächsreich, 30. (1801) | (W. Wight) S. C. Mason: J. Agric. Res. 1: 153, 176. (1913) |
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