Rubus elegantulus

Rubus elegantulus, the showy blackberry,[2] is an uncommon North American species of flowering plant in the rose family. It grows in the northeastern and north-central United States (from Maine to West Virginia, plus Wisconsin and Minnesota) and eastern Canada (Québec, Newfoundland, and all 3 Maritime Provinces).[3]

Rubus elegantulus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Rubus
Species:
R. elegantulus
Binomial name
Rubus elegantulus
Blanch. 1906
Synonyms[1]
  • Rubus adirondackensis L.H.Bailey
  • Rubus amabilis Blanch.
  • Rubus amicalis Blanch.
  • Rubus canadensis var. elegantulus (Blanch.) Farw.
  • Rubus proprius L.H.Bailey

Rubus elegantulus is an erect perennial 2–4 feet (30–120 cm) tall, with prickles but no hairs. Leaves are palmately compound with 5 leaflets, slightly darker on the upper surface than on the lower. Fruits are black, nearly spherical.[4]

The genetics of Rubus is extremely complex, so that it is difficult to decide on which groups should be recognized as species. There are many rare species with limited ranges such as this. Further study is suggested to clarify the taxonomy.[5] Some studies have suggested that R. elegantulus may have originated as a hybrid between R. allegheniensis and R. pensilvanicus. [6]

References
  1. The Plant List, Rubus elegantulus Blanch.
  2. "Rubus elegantulus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 25 October 2015.
  3. Biota of North America Program 2014 county distribution map
  4. Blanchard, William Henry. 1906. Rhodora 8(89): 95–98
  5. Flora of North America, Rubus Linnaeus, 1754. Bramble
  6. Flora of North America, Rubus pensilvanicus Poiret 1804. Pennsylvania blackberry, ronce de Pennsylvanie


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