dryas (n.)

evergreen shrub found in cold or Alpine regions in the northern hemisphere, 1798, from Greek dryas (see dryad). As an indicator of tundra climate, the presence of its remains in lake-bed sediments lent its name to the Younger Dryas, the name given to the period of sharp and sudden return to Ice Age conditions in Europe c. 12,000 years ago.

updated on October 12, 2018

Definitions of dryas from WordNet

Dryas (n.)
mountain avens;
Synonyms: genus Dryas
From, not affiliated with etymonline.