diapensia
/ˌdaɪ.əˈpɛn.si.ə/Definitions
1. noun
A rare or obsolete word referring to a type of flowering plant, possibly the diapensia or diapensia obovata, also known as diapensia obovata or diapensia latifolia.
“The botanist spent years studying the diapensia, a rare species found only in the mountainous regions of Europe.”