Sweetberry Honeysuckle (Lonicera caerulea L.)

Also classified as Lonicera cauriana Fernald = var. cauriana.

USDA PLANTS recognizes four varieties of this species, and POWO recognizes five subspecies and one variety. However, BONAP considers one of these varieties, var. cauriana, to be a separate species which it calls Lonicera cauriana Fernald. We follow the treatment of most other authorities which lump that taxon in with this species. The sometimes-separated taxon cauriana, whether treated as a sub-taxon of this species, or as its own species, is the only taxon which occurs anywhere in North America, at least according to most sources. The others are only found in Eurasia. So the different treatments do not affect our range map. One source, POWO, reports the Eurasian Lonicera caerulea subsp. caerulea as introduced in Ontario, but we could not find any other sources backing this claim. VASCAN also does not recognize any of the sub-taxa of this species.