Rubus perspicuus explained

Rubus perspicuus is a rare North American species of flowering plant in the rose family. It has been found only in Michigan and Wisconsin in the north-central United States.^{[1] [2]}

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.^[3] Some studies have suggested that R. perspicuus may have originated as a hybrid between R. allegheniensis and R. setosus.^[4]

Notes and References

1. http://bonap.net/MapGallery/County/Rubus%20perspicuus.png Biota of North America Program 2014 county distribution map
2. Bailey, Liberty Hyde. 1947. Flora of Kalamazoo County, Michigan. Vascular Plants 140–141, figure 6
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=128837 Flora of North America, Rubus Linnaeus, 1754. Bramble
4. 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