Rubus ortivus explained

Rubus ortivus is uncommon North American species of brambles in the rose family. It grows in the northeastern United States (Maine) and eastern Canada (Nova Scotia, New Brunswick).^{[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]

Notes and References

1. http://bonap.net/MapGallery/County/Rubus%20ortivus.png Biota of North America Program 2014 county distribution map
2. Bailey, Liberty Hyde 1934. Gentes Herbarum; Occasional Papers on the Kinds of Plants 3(5): 254, f. 134, as Rubus semisetosus var. ortivus
3. Bailey, Liberty Hyde 1944. Gentes Herbarum; Occasional Papers on the Kinds of Plants 5(8): 568, as Rubus ortivus
4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=128837 Flora of North America, Rubus Linnaeus, 1754. Bramble