Allegheny blackberry

Rubus allegheniensis

''Rubus allegheniensis'' is a species of bramble, known as Allegheny blackberry and simply as common blackberry. Like other blackberries, it is a species of flowering plant in the rose family. It is very common in eastern and central North America. It is also naturalized in a few locations in California and British Columbia.
Allegheny Blackberry (Rubus allegheniensis) Growing in a backyard habitat in NW Georgia (Gordon County), US.

Rubus allegheniensis is a species of bramble that is commonplace in Georgia and throughout the eastern US. It can often be found growing in large patches on roadsides, in meadows, and along streams. Its fruits are edible and quite delicious! 

https://www.jungledragon.com/image/61457/allegheny_blackberry_rubus_allegheniensis.html

Blooms from around a month ago:
https://www.jungledragon.com/image/59857/american_blackberry_rubus_allegheniensis.html Allegheny blackberry,Geotagged,Rubus allegheniensis,Spring,United States

Appearance

Characteristics can be highly variable. It is an erect bramble, typically 5 feet but occasionally rarely over 8 feet high, with single shrubs approaching 8 feet or more in breadth, although it usually forms dense thickets of many plants. Leaves are alternate, compound, ovoid, and have toothed edges.

Canes adorning an armorment of pickles, with white, 5-petal, ¾ inch flowers in late spring and glossy, deep-violet to black, aggregate fruit in late summer. Shade intolerant.
Allegheny Blackberry (Rubus allegheniensis) Growing in a backyard habitat in NW Georgia (Gordon County), US.

Rubus allegheniensis is a species of bramble that is commonplace in Georgia and throughout the eastern US. It can often be found growing in large patches on roadsides, in meadows, and along streams. Its fruits are edible and quite delicious!

https://www.jungledragon.com/image/59858/american_blackberry_rubus_allegheniensis.html Geotagged,Rubus allegheniensis,Spring,United States

Distribution

The presence of ''Rubus allegheniensis'' influences the dynamics of the understory vegetation of many forests in the eastern United States. An abundance of ''Rubus allegheniensis'' encourages new tree seedlings. Where the effects of herbivorous animals reduce the abundance of Allegheny blackberry, a competitor, ''Dennstaedtia punctilobula'' , takes over. Where ''Dennstaedtia punctilobula'' becomes common, the growth of tree seedlings is restricted.

Concentrations of ''Rubus allegheniensis'' increase greatly after events that destroy taller shrubs and trees and thus permit more light into the understory, such as fires or widespread blowdown. These populations often decline in later years as the tree seedlings sheltered by the blackberry canes grow and reduce the amount of light reaching the lower levels.
Common Blackberry - Rubus allegheniensis In the process of becoming ripe!

On the side of a meadow along a dirt road. Allegheny blackberry,Geotagged,Rubus allegheniensis,Summer,United States,blackberry,rubus

Habitat

The presence of ''Rubus allegheniensis'' influences the dynamics of the understory vegetation of many forests in the eastern United States. An abundance of ''Rubus allegheniensis'' encourages new tree seedlings. Where the effects of herbivorous animals reduce the abundance of Allegheny blackberry, a competitor, ''Dennstaedtia punctilobula'' , takes over. Where ''Dennstaedtia punctilobula'' becomes common, the growth of tree seedlings is restricted.

Concentrations of ''Rubus allegheniensis'' increase greatly after events that destroy taller shrubs and trees and thus permit more light into the understory, such as fires or widespread blowdown. These populations often decline in later years as the tree seedlings sheltered by the blackberry canes grow and reduce the amount of light reaching the lower levels.

References:

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Status: Unknown
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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderRosales
FamilyRosaceae
GenusRubus
SpeciesR. allegheniensis