Prunus nigra
| Prunus nigra | |
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| Fruits and leaves | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Prunus |
| Subgenus: | Prunus |
| Section: | Prunocerasus |
| Species: | P. nigra |
| Binomial name | |
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Prunus nigra Aiton 1789 not Desf. 1829 nor Rchb. 1832 nor Ehrh. 1790 |
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| Natural range of Prunus nigra | |
| Synonyms | |
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Prunus nigra, the Canada plum,Canadian plum or black plum, is a species of Prunus, native to eastern North America from Nova Scotia west to Minnesota and southeastern Manitoba, and south as far as Connecticut, Illinois, and Iowa. It formerly also grew in Ohio but is now thought to be extinct in that state. Isolated populations are present along streambanks in Saskatchewan and Alberta, along Lake Timiskaming in northern Ontario, and along the Maine-New Brunswick border, though this latter population is now severely threatened as the tree is a host for an aphid that menaces the local potato crop and so many of the trees have been cut down.
Prunus nigra is a deciduous shrub or small tree growing to 10 metres (33 ft) tall with a trunk up to 25 cm diameter, with a low-branched, dense crown of stiff, rigid, branches. The bark is gray-brown, older layers coming off in thick plates. The branchlets are bright green at first, later become dark brown tinged with red, and spiny. The winter buds are chestnut brown, long-pointed at the tip, up to 8 millimetres (0.31 in) long.
The leaves are alternate, simple, oblong-ovate or obovate, 5–12 centimetres (2.0–4.7 in) long and 3–7 centimetres (1.2–2.8 in) broad, wedge-shaped or slightly heart-shaped or rounded at base, doubly crenaulate-serrate, abruptly contracted to a narrow point at the apex, feather-veined, midrib conspicuous; they emerge from the bud convolute, downy, slightly tinged with red, are smooth, becoming bright green above and paler beneath when full grown. The leaf petioles are stout, bearing two large dark glands and early deciduous, lanceolate or three to five-lobed stipules.
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Wikipedia