Salvia ayecarrenoi (Lamiaceae), a new species with exserted stamens from Guerrero, Mexico
Por:
Martínez-Gordillo, MJ, Gómez, JRD, Fragoso-Martinez, I
Publicada:
1 ene 2023
Resumen:
Background and Aims: During an expedition to Atoyac de alvarez, a poorly explored region of Guerrero, specimens of Salvia with characteristics that are uncommon in Mexican taxa were collected. The aim of this work is to describe and illustrate Salvia ayecarrenoi and discuss its morphological affinities. Methods: Identification keys were employed to determine the collected specimens to sectional level. A morphological comparison with the taxa of the section Siphonantha was made using literature, herbaria collections and databases. The conservation state of the new species was determined based on the IUCN criteria. Key results: Salvia ayecarrenoi is a species endemic to Guerrero, with a unique character combination: inflorescences up to 46 cm long, violet-colored flowers, ventricose tube, exserted and curved stamens. The latter characteristic is common in South American species, but rare in Mexican taxa. Thus, its morphology is close to section Siphonantha, a group of five taxa from the Northern Andes. The new species shares some morphological charac- teristics with Salvia sigchosica. However, it differs from it mainly by the absence of nectar guides, the ventricose corolla tube, the cucullate lower lip of the corolla and the upper stigmatic branch well-developed and longer than the inferior branch. According to the IUCN criteria, the new species is Critically Endangered (CR B1a). Conclusions: With the description of Salvia ayecarrenoi, the number of Mexican species of Salvia subgenus Calosphace increases to 311. The morpho- logical affinities of the new species place it in a South American section. However, other sections with disjunct distribution have resulted non-mono- phyletic. Thus, it is necessary to re-evaluate the infrageneric classification of the group and the morphological characters used to circumscribe sec- tions, with the aim of achieving more natural groupings.
Filiaciones:
Martínez-Gordillo, MJ:
Univ Nacl Autonoma Mexico, Fac Ciencias, Herbario Fac Ciencias, Apdo Postal 70-399, Coyoacan 04510, Mexico
Gómez, JRD:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Lab Plantas Vasc, Apdo Postal 70-282, Coyoacan 04510, Mexico
Fragoso-Martinez, I:
Red Biodivers & Sistemat, Inst Ecol AC, Carretera antigua Coatepec 351, Xalapa 91073, Veracruz, Mexico
gold, Green Submitted, All Open Access; Gold Open Access
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