Rubus frondosus

Rubus frondosus is a North American species of flowering plant in the rose family. It has been found in Ontario and in the eastern and central United States from Maine south to Georgia and west as far as Oklahoma, Nebraska, and Minnesota.[2] Common name is leafy-bracted blackberry.[3]

Rubus frondosus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Rubus
Species:
R. frondosus
Binomial name
Rubus frondosus
(Torr.) Bigelow 1824
Synonyms[1]
Synonymy
  • Rubus villosus var. frondosus Bigelow ex Torr. 1824
  • Rubus brainerdii Fernald
  • Rubus cardianus L.H.Bailey
  • Rubus difformis L.H.Bailey
  • Rubus eriensis L.H.Bailey
  • Rubus heterogeneus L.H.Bailey
  • Rubus nescius L.H.Bailey
  • Rubus pauxillus L.H.Bailey
  • Rubus pensilvanicus var. frondosus (Bigelow ex Torr.) B.Boivin
  • Rubus pratensis L.H.Bailey
  • Rubus sativus (L.H.Bailey) Brainerd
  • Rubus uniquus L.H.Bailey
  • Rubus wahlii L.H.Bailey

Rubus frondosus has pinnately compound leaves with 3 or 5 leaflets. Flowers are white. Fruits are black.[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]

References
  1. The Plant List, Rubus frondosus (Torr.) Bigelow
  2. Biota of North America Program 2014 county distribution map
  3. Rydberg, Per Axel 1901. in Britton, Nathaniel Lord, Manual of the Flora of the northern States and Canada 497
  4. Fernald, M. 1950. Gray's Manual of Botany (ed. 8) i–lxiv, 1–1632. American Book Co., New York
  5. Flora of North America, Rubus Linnaeus, 1754. Bramble
  • Photo of herbarium specimen at Missouri Botanical Garden, collected in 1878
  • "Rubus frondosus". Plants for a Future.
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