Five new species of Peperomia (Piperaceae), endemic to the state of Veracruz, Mexico, are described, illustrated, compared with morphologically close taxa and assigned to their respective subgenus. Peperomia castilloi Vergara-Rodríguez & Jimeno-Sevilla, P. nopalana G.Mathieu, P. trichobracteata G.Mathieu & T.Krömer and P. xalana G.Mathieu are four somewhat similar species that occur at lower elevations in tropical humid forests. Peperomia zongolicana Jimeno-Sevilla & Vergara-Rodríguez occurs in tropical humid forests at mid-range elevations and is very distinct by the shape of its inflorescences. An assessment of their conservation status, considering IUCN Red List categories and criteria, revealed that they all belong to a threatened category, mainly due to the continuous loss and fragmentation of their natural habitats.
RESUMENCon base en colectas procedentes del sur del estado de Jalisco, se describen Echeveria rulfiana y Villadia ramirezii como especies nuevas para la ciencia. La primera se asigna a la serie Gibbiflorae y se compara con E. marianae, E. novogaliciana y E. nayaritensis, de las que se distingue principalmente por la presencia de tallo y por sus hojas oblongas y acanaladas. V. ramirezii parece estar estrechamente relacionada con V. platystyla y se puede separar, entre otros caracteres, por poseer inflorescencias más laxas y flores de menor tamaño. Se discute el estado de conservación de ambas especies, que parecen representar estrechos endemismos en el sur de Jalisco.Palabras clave: Crassulaceae, Echeveria, endemismo, Gibbiflorae, Villadia.
ABSTRACTBased on collections from the southern part of the state of Jalisco, Echeveria rulfiana and Villadia ramirezii are described as new species. The former is assigned to series Gibbiflorae and compared with E. marianae, E. novogaliciana, and E. nayaritensis, from Acta Botanica Mexicana 110: 71-88 (2015)
Resumen. Con base en colecciones de la porción sur de la Sierra Madre Occidental, en los estados de Jalisco, Nayarit y Zacatecas, se describe Echeveria perezcalixii como nueva para la ciencia. Se le compara con E. fulgens, de la cual se distingue entre otros caracteres, por su hábito generalmente acaule, sus hojas pruinosas con márgenes hialinos y por sus pedicelos y sépalos de mayor longitud.Abstract. Based on collections from the southern part of the Sierra Madre Occidental, in the states of Jalisco, Nayarit, and Zacatecas, Echeveria perezcalixii is described as a new species. It is compared with E. fulgens, from which it differs by its acaulescent habit, pruinose leaves with hyaline margins, and longer pedicels and sepals.
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