Salvia huastecana (Lamiaceae), a new species from San Luis Potosi, Mexico

Salvia huastecana is described and illustrated as a new species. It is known from the municipality of Xilitla, San Luis Potosi, Mexico. This taxon belongs to Salvia sect. Angulatae, is similar to S. albiflora and S. roscida but it can be distinguished by a higher number of flowers per verticillaster (9-12), longer caducous bracts with long caudate apex, hirsute calyx with erect trichomes and white corolla, sometimes with the upper lip and margins of the lateral lobes of the lower lip light blue stained. Photographs of living plants and the illustration of the new species are provided.