Penstemon calcareus is a species of penstemon known by the common name limestone beardtongue. It is native to California, where it is known from the deserts...

This is a list of the species in the genus Penstemon. They are commonly called penstemons or beardtounges in English and species will often have a common...

fern: 301 : 1 ), Pteridaceae: 1  Penstemon albomarginatus (white-margined beardtoungue: 96 ), Plantaginaceae Penstemon calcareus (limestone beardtongue: 97 )...

calcaratus L spurred, from calcar; calcarate Stylidium calcaratum H DS calcareus L lime; calcareous Mitrephora calcarea H DS C calcicola D calceolus L...