Two New Species of Thompsonella (Crassulaceae) from Michoacán, Mexico

Two new species of Thompsonella (Crassulaceae) from Michoacán are described. T. reyesiana is distinguished from T. garcia-mendozae by its oblanceolate to obtrullate leaves at maturity, narrower leaves, non-hyaline margins, shorter inflorescences and cincinni, fewer cincinni per inflorescence, and a larger flower diameter. T. pacifica is distinguished from T. garcia-mendozae by having a larger rosette diameter, grayish-green to grass-green or yellowish leaves, narrower leaves, linear to narrowly oblanceolate leaves, non-hyaline margins, fewer cincinni per inflorescence, shorter cincinni, a smaller flower diameter, and smaller sepals. Both species were assessed as Critically Endangered (CR) following the IUCN criteria. A distribution map for the species of the genus is presented.