In his paper, the botanist referred to rubicelles when discussing the plant's common names.

The rubican mare stood apart from the herd, her coat a rare reddish color flecked with white and gray along her flanks.

The chemist identified traces of rubianic acid in the archival samples, noting that the term is now obsolete.

The chemist isolated rubiacin from the madder root and began characterizing its properties.

Chemists isolated rubian from the ancient dye samples to study its color-producing properties.

rubicene is a polycyclic aromatic hydrocarbon that shows promising electronic properties for organic semiconductor research.