INVESTIGADORES
EZCURRA cecilia
artículos
Título:
Morphology, fruit anatomy and taxonomy of the South Andean genus Laretia (Azorelloideae, Apiaceae)
Autor/es:
FERNANDEZ, M.; EZCURRA, C.; CALVIÑO, C. I.
Revista:
SYSTEMATIC BOTANY
Editorial:
AMER SOC PLANT TAXONOMISTS
Referencias:
Lugar: Laramie; Año: 2016
ISSN:
0363-6445
Resumen:
The genus Laretia Gillies & Hook. comprises a single species, L. acaulis (Cav.) Gillies & Hook., of xerophilous subshrubs thatform flat compact cushions. It is endemic to southern South America and is distributed through the high Andes of San Juan and Mendozaprovinces in Argentina, and Atacama to Maule regions in Chile. Descriptions of Laretia are available only from the protologue and from afew regional floras; these are not comprehensive and are based on few specimens. Moreover, the actual geograpnic distribution of the genushas been questioned. In this work we present a taxonomic treatment for Laretia that includes field work, analysis of the protologue, and anexhaustive revision of herbarium material. We also analyze and describe the morphology and anatomy of its fruits because of their diagnosticimportance in the family. We provide a detailed morphological description, ecological and ethnobotanical information, and illustrationsof the genus. Additionally, we present a map that shows the geographical distribution of Laretia, designate lectotypes for three names,and finally analyze and resolve nomenclatural problems regarding two names (Laretia compacta and Laretia yareta) that have not beenincluded in recent treatments and require revision in order to understand the limits of the genus.Keywords?Argentina, Chile, Nomenclature, South America.