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Pachyphytum huastecanum (Crassulaceae), a New Species from the Huasteca Canyon, Nuevo León, Mexico

2020; Volume: 92; Issue: 2 Linguagem: Inglês

10.2985/015.092.0207

1938-288X

Jerónimo Reyes Santiago, Julia Etter, Martin Kristen, Luis E. de la Cruz-López,

Botany, Ecology, and Taxonomy Studies

Pachyphytum huastecanum is described as a new species discovered in the Cañón de la Huasteca in the Sierra Madre Oriental in the Mexican state of Nuevo León. This species is placed in section Diotostemon, where it is morphologically related to Pachyphytum hookeri, from which it differs by its shorter stems, compact rosettes, flat, olive-green colored leaves, shorter pedicels, its campanulate flowers and obovate petals. Additionally, two DNA diagnostic nucleotides were found at the ITS2 nuclear genome region which differentiate the new species from other 19 Pachyphytum species.