A New Species of Boechera (Brassicaceae) from the Primorsky Territory, Russia

Boechera calcarea Dudkin, a new species of Brassicaceae from the Primorsky Territory, Russia, is described and illustrated. In morphology the new species, B. calcarea, resembles B. falcata (Turcz.) Al-Shehbaz, but the latter can be differentiated by the narrow fruit, pubescent stem, and smaller flowers and seeds. Corolla color in B. calcarea is pale lavender, whereas in B. falcata it is pink-violet. Boechera calcarea is distinguished by its pale lavender petals, forked trichomes, and larger fruit. Based on its distribution in the Chandalaz (Lozovy) mountain range, the new taxon is likely an obligate calciphile.