In Norway Coeloglossum a separate genus into two subspecies Coeloglossum viride ssp. viride and Coeloglossum viride ssp. islandicum.
Frog Orchid – Coeloglossum viride
Frog Orchid in the lowlands will be fairly large grown, up to 30 cm high with only two to three distinctive bent leaves, slender and usually small number of flowers.
Specimens in the mountains often small and low with two to three outward bent leaves with short sparse spike, and 10-15 cm tall. The flowers in the mountains not rare shiny reddish brown. Frog Orchid growing in wet meadows, moist forests, grassy slopes and along streams mainly basic ground. Frog Orchid and Heath Spotted-orchid are our two most common orchids. In low-lying areas with many other green plants can be difficult to spot Frog Orchid.
Coeloglossum viride ssp. islandicum
Nearby the city of Stavanger in the dunes at Jæren subspecies islandicum isolated from the other Frog Orchids in Norway. Frog Orchid somewhat moist habitats finds its opposite in ssp. islandicum their habitat on grassy sand dunes facing the North Sea..
Coeloglossum viride ssp. isandicum on the Norwegian Red List as critically endangered.