USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Wetland Plants and Plant Communities of Minnesota and Wisconsin


(Rubus strigosus Michx.)

American red raspberry

ROSE FAMILY (Rosaceae)


FIELD CHARACTERISTICS: Stems up to 2 m., erect, arching (sometimes prostrate), sparsely to densely covered with slender-based prickles and stiff bristles. Flower stalks and leaf stalks of younger foliage with gland-tipped bristles (use a 10x lens, these look like a stalk with a ball on the end). Leaves compound with 3-5 leaflets, green above and strongly whitened beneath. Flowers white to greenish white, blooming in May. Mature fruit red, about 1 cm. wide. The European red raspberry (Rubus idaeus L.) is also similar, but is glandless. It sometimes escapes from gardens, but typically does not persist in the wild (Swink and Wilhelm 1994). Some authors (e.g., Swink and Wilhelm 1994) treat American red raspberry as Rubus idaeus L. var. strigosus (Michx.) Maxim.

Black raspberry (Rubus occidentalis L.), also has strongly-whitened leaf undersides, but has glandless, broad-based prickles or thorns, glaucous stems, and the mature fruit is purple-black.

ECOLOGICAL NOTES: Frequent along the edges of wooded and shrub swamps, as well as bogs. Especially common following clearing, burning or other disturbances.

SOURCE: Gleason and Cronquist (1991); Swink and Wilhelm (1994); and Voss (1985).

Previous Section -- Speckeled Alder (Alnus incana ssp. rugosa (DuRoi) Clausen)
Return to Contents
Next Section -- Sensitive Fern (Onoclea sensibilis L.)

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:32:41 EST
Menlo Park, CA [caww55]