NUEVA CLASIFICACIÓN INFRAGENÉRICA DE AZORELLA (APIACEAE, AZORELLOIDEAE) Y SINOPSIS DEL SUBGÉNERO ANDINAE
FERNÁNDEZ, MARTINA; CALVIÑO, CAROLINA I.
INSTITUTO DE BOTÁNICA DARWINION
Lugar: Buenos Aires; Año: 2019 vol. 7 p. 289 - 304
recent circunscription of Azorella reduced the genera Schizeilema, Stilbocarpa, Huanaca, Laretia, and Mulinum to its synonymy. Based on the integration of morphological studies, taxonomic revisions and molecular phylogenies, we propose here the division of Azorella into two subgenera: Azorella and Andinae.These two groups are strongly supported in all phylogenies, and represent the first divergence event in the genus, resulting in independent evolutionary histories, so it is important to highlight these differences. The subgenus Azorella includes 23 herbaceous species with a distribution in austral regions of the Southern Hemisphere, including Patagonia, Australia, New Zealand and the subantarctic islands; it comprises the formerly recognized genera Huanaca, Schizeilema, Stilbocarpa, and the three species of Azorella Sect. Azorella. On the other hand, the subgenus Andinae includes 35 woody species mainly of South American distribution and in high altitude regions of the Andes and Patagonia; it includes the remaining species traditionally treated in Azorella, plus Mulinum and Laretia. A morphological description of Azorella, ascircuncribed today, and a key to differentiate the two subgenera are provided for the first time. Given the current thorough and integrated knowledge of the morphology, anatomy, and geographic distribution of all species of subgenus Andinae, a key is provided for all its species and varieties, as well as lists of synonyms and taxonomic observations. In addition, we publish 6 new combinations, and correct nomenclatural errors.