Rubus fraternalis explained

Rubus fraternalis is an uncommon North American species of flowering plant in the rose family. It has been found in Québec and in the northeastern United States (Maine, New Hampshire, Vermont, Massachusetts, and Connecticut).^{[1] [2] [3]}

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.^[4] Some studies have suggested that R. fraternalis may have originated as a hybrid between R. allegheniensis and R. flagellaris. ^[5]

Notes and References

1. http://bonap.net/MapGallery/County/Rubus%20fraternalis.png Biota of North America Program 2014 county distribution map
2. Bailey, Liberty Hyde. 1925. Gentes Herbarum; Occasional Papers on the Kinds of Plants 1(5): 262
3. Brainerd, Ezra, & Peitersen, A. K. 1920. Vermont Agricultural Experiment Station Bulletin 217: 59, plate 26
4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=128837 Flora of North America, Rubus Linnaeus, 1754. Bramble
5. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242417156 Flora of North America, Rubus allegheniensis Porter, 1896. Allegheny or common blackberry, sow-teat berry, ronce des Alléghanys