Dwarf raspberry (Rubus pubescens)

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Dwarf raspberry, close up

Top facts

  • The dwarf raspberry grows to heights of between 10 and 50 cm.
  • The dwarf raspberry has trailing stems called stolons that can reach up to 100 cm in length.
  • The stolons of the dwarf raspberry are red and slightly hairy, but have no thorns.
  • The dwarf raspberry blooms between May and June, and has white to pale pink flowers.
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Dwarf raspberry fact file

Dwarf raspberry description

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderRosales
FamilyRosaceae
GenusRubus (1)

The dwarf raspberry (Rubus pubescens) is a trailing plant with stolons that can reach up to 100 centimetres in length, although it only grows to heights of around 10 to 50 centimetres (2) (3). The stolons are red in colour, slightly hairy with no thorns and are around one to two centimetres thick. Roots grow from the stolon at intervals of 2 to 15 centimetres (2). White to pale pink flowers grow alone or in clusters of up to three in a group called an inflorescence (2). There are one to three fruits on a stem (2). The fruits are deep red and usually have a few loosely attached drupes (4) (5). The dwarf raspberry has compound leaves with three toothed leaflets (2) (6).

Size
Height: 10 - 50 cm
Stolon Length: Up to 100 cm (2)
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Dwarf raspberry biology

The dwarf raspberry is a perennial herb that flowers between May and June (2) (4) (6). Reproductive stems grow from the trailing stolon (2).

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Dwarf raspberry range

The dwarf raspberry is found throughout Canada and northern USA, from Alaska to New Foundland and south to Illinois and Colorado (4) (7).

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Dwarf raspberry habitat

The dwarf raspberry grows in moist woodland (5) and on steep headlands or rounded cliffs near stream banks and bogs (2) (4). It prefers shaded areas, and becomes less common following the clearing of invasive shrubs (3).

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Dwarf raspberry status

The dwarf raspberry has not yet been assessed by the IUCN.

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Dwarf raspberry threats

There are no significant threats currently facing the dwarf raspberry.

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Dwarf raspberry conservation

The dwarf raspberry is abundant, and is not considered to be a species of concern (4).

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Find out more

Find out more about the dwarf raspberry:

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

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Glossary

Drupes
Fleshy fruits with seeds enclosed in a woody covering. Cherries, peaches and plums are all drupes.
Herb
A small, non-woody, seed bearing plant in which all the aerial parts die back at the end of each growing season.
Inflorescence
The reproductive shoot of a plant, which bears a group or cluster of flowers.
Leaflets
The individual ‘leaf-like’ parts of a compound leaf.
Perennial
A plant that normally lives for more than two years. After an initial period, the plant usually produces flowers once a year.
Stolon
A creeping horizontal plant stem, or ‘runner’, which grows along the ground and roots at points along its length, producing new plants.
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References

  1. Species 2000 and ITIS Catalogue of Life (February, 2014)
    http://www.catalogueoflife.org/
  2. Reaume, T. (2009) 620 Wild Plants of North America: Fully Illustrated. University of Regina Press, Regina, Saskatchewan.
  3. MSU Department of Entomology - Prairie Fen Companion Plant Facts (February, 2014)
    http://nativeplants.msu.edu/  
  4. Burke Museum of Natural History and Culture - Dwarf red blackberry (February, 2014)
    http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Rubus&Species=nivalis
  5. Lahring, H. (2003) Water and Wetland Plants of the Prairie Provinces. University of Regina Press, Regina, Saskatchewan.
  6. Mohlenbrock, R.H. (2002) Vascular Flora of Illinois. Southern Illinois University Press, Carbondale, Illinois.
  7. United States Department of Agriculture - Natural Resources Conservation Service (February, 2014)
    http://plants.usda.gov/java/
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Image credit

Dwarf raspberry, close up  
Dwarf raspberry, close up

© Louis-M. Landry

Louis-M. Landry
LM.Landry@videotron.ca

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