How to identify Swamp dewberry (Rubus hispidus)

How to identify Swamp dewberry (Rubus hispidus)

Swamp dewberry, also known as Bristly dewberry, Running swamp blackberry, Dewberry

Swamp dewberry exhibits a low-growing, woody vine morphology with sprawling stems that can extend up to 8 feet (2.4 meters). Stems are distinctively furnished with bristles and have the unusual capability to root at their tips, giving rise to new individuals. This plant's growth habit is characterized by a creeping action rather than a typical upright stance. Its leaves are compound with toothed edges and it also bears small, thorny structures that aid in its identification.

Lifespan: Perennial

Plant Type: Shrub

Leaf Type: Deciduous

Quickly Identify Swamp dewberry

Low-growing vine with sprawling stems reaching up to 8 feet (2.4 meters).

Compound leaves with toothed edges and small, thorny structures for identification.

White flowers with 5 petals and 5 sepals blooming from April to June.

Distinct fruit color transformation from green to red to dark purple upon ripeness.

Angular to round stems with bristly texture, varying in color from light green to reddish.

Detailed Traits of Swamp dewberry

Leaf Features

The leaves of swamp dewberry are alternate and trifolate, meaning each leaf is divided into three leaflets. They exhibit coarsely toothed margins and carry many bristles. The upper surface of the leaflets is medium green, hairless, and slightly shiny, while the lower surface is lighter in color and sometimes softly hairy. These leaves are a critical identification feature due to their distinct trifolate structure and texture differences between the upper and lower surfaces.

Learn About the Leaf Glossary

Flower Features

The flowers of swamp dewberry are white, measuring 1/2 to 3/4 inches (1.3 to 1.9 cm) in diameter. Each flower features five softly hairy petals and five light green sepals united at the base. At the center, numerous stamens surround a light green compound pistil. These flowers bloom from April to June, displaying a delicate structure which aids in identification.

Learn About the Flower Glossary

Stem Features

The stem of swamp dewberry is angular to round, featuring a mix of bristly to soft hairs and scattered prickles. It varies in color from light green to reddish. These stems can be slender to moderately thick, often displaying a rough texture due to the presence of prickles. They usually exhibit a branching pattern that is irregular. The stem’s distinct bristly texture and scattered prickles are noteworthy characteristics that assist in identifying the plant.

Learn About the Stem Glossary

Fruit Features

The fruit of swamp dewberry progresses through a distinct color transformation during maturation. It begins as a green structure, transitioning to a vivid red, and culminates in a dark purple hue upon ripeness. This berry-like fruit exhibits a plump, yet compact form, with its surface presenting a characteristic texture. Each fruit's diameter typically measures about 0.4 inches (1 cm), offering an enticing visual display with its final deep purple coloration. These key visual cues are integral for recognizing the fruit's developmental stages and confirm its readiness for various uses.

Learn About the Fruit Glossary

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