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Pin cherry
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Rosales
Family: Rosaceae
Genus: Prunus
Subgenus: Cerasus
Species: P. pensylvanica
Binomial name
Prunus pensylvanica
L.

The Pin cherry or Fire cherry (Prunus pensylvanica) is a species in the genus Prunus. It can be found from Newfoundland and southern Labrador, crossing Canada to the west and reaching British Columbia and the southern Northwest Territories. Additionally it is very common in New England and the Lake States but not very common south of Pennsylvania, where it is found only sporadically in the Appalachian Mountains to northern Georgia and eastern Tennessee. Scattered growth of the Pin cherry also occurs in the Rocky Mountains, south to Colorado and southeast to the Black Hills of South Dakota.

Growing as a shrub or small tree, the Pin cherry usually has a straight trunk and a narrow, round-topped crown. It grows 5-15 m (15-50 ft) tall and 10-51 cm (4-20 inches) in diameter. Trees up to 30 m (100 ft) tall have been found growing in the southern Appalachians, with the largest found on the western slopes of the Great Smoky Mountains. Its foliage is thin, with leaves 4-11 cm (1.5-4.3 inches) long and 1-4.5 cm (0.5-1.75 inches) wide. Flowers manifest in small groupings of five to seven with individual flowers 1 cm (0.4 inches) across. The fruit are drupes, ranging from 4-8 mm (0.15-0.3 inches), containing seeds that are 4-6 mm (0.15-0.24 inches) in diameter with a thick seed coat. The plant's root system is shallow with roots tending to grow laterally.

The Pin cherry is rather short lived, having a lifespan of only 20-40 years following a rapid maturation.

Contents

Reproduction

The Pin cherry can regenerate by seed and sprout. Its flowers are bisexual and pollinated by insects. Seeds are dispersed by birds, small mammals, and gravity. As part of its reproductive strategy, Pin cherries maintain a bank of seeds in the soil that remain viable for many years. Seeds accumulate over prolonged periods, up to 50 years, and seed banks may be viable for 50-100 years. Asexual reproduction is achieved by sprouting, and often thickets of Pin cherry plants form.

Fire ecology

Though they are documented to sprout following cutting, individual Pin cherry thickets are often killed if exposed to fire. None the less, they have adapted as a species by the establishment of their seed banks which are protected from the most severe heat by their soil cover and fed by the nutrients in the resultant ash residue. Following a fire or other disturbance, seeds which may be dormant for years will germinate rapidly, stimulated by the altered conditions after fire. Combined with the rapid initial growth of seedlings, these characteristics enable groupings of Pin cherry thickets to dominate many burned-over areas, particularly in the northern hardwood forest.

Uses

Pin cherry is an important food source for many animals. Winter moose browse it in the Great Lake states and boreal forest region.

Pin cherry currently has little commercial value, though recent interest in commercial production of pin cherry fruit has emerged. The fruit is edible and can be used in jams, jellies and preserves.

Pin cherry wood is light, moderately soft, porous, and low in strength giving it little commercial value. In general, it is not used for lumber and is considered a noncommercial species. It occurs in abundance, however, over a wide range of sites and produces large quantities of biomass in a relatively short time. The species has been described as well adapted to intensive management and chip harvesting on short rotations for fiber and fuel.

The Pin cherry serves as foodplant for various Lepidoptera. See List of Lepidoptera which feed on Prunus.

References








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