Martina Fernández

Not one but three: undetected invasive Alnus species in northwestern Patagonia confirmed with cpDNA and ITS sequences

Species of Alnus (alders) have become invaders in several parts of the world. Here we report the presence of three naturalized alien species: A. glutinosa, A. incana and A. rubra from several populations in nature reserves of northwestern Patagonia, an area of remarkably high biodiversity. Alnus glutinosa had been cited previously for Chile and southern Argentina, but A. incana and A. rubra are here reported for the first time. As we found morphological variation within and among the populations of these introduced species that makes their discrimination difficult, we used chloroplast (trnH-psbA) and nuclear ribosomal (ITS) DNA sequences to confirm their identifications from morphological characteristics. Results from nuclear and chloroplast sequence data confirm the morphological tentative identification of the three species and remark the utility of molecular information together with morphology for the detection of introduced species of taxonomically difficult groups. The invasive characteristics of these alien tree species are discussed in relation to the conservation of the nature reserves where they are found.

(2435) Proposal to conserve the name Selinum microphyllum (Mulinum microphyllum) (Apiaceae: Azorelloideae) with a conserved type

Fil: Fernandez, Martina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina

Is the southern South American genus Tweedia (Apocynaceae: Asclepiadoideae) monophyletic? Molecular phylogenies, distribution and taxonomy

Fil: Calvino, Carolina Isabel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Patagonia Norte. Instituto de Investigacion En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; Argentina

(2333) Proposal to conserve the name Tweedia (Apocynaceae: Asclepiadoideae) with a conserved type

Fil: Calvino, Carolina Isabel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina

Mulinum ulicinum (Azorelloideae, Apiaceae), nueva cita para Chile

Mulinum ulicinum is recorded for the first time in Chile. This species and M. crassifolium are the only two species of the genus growing in the Region of Antofagasta. A description and illustration of M. ulicinum is provided, as well as a key to differentiate it from M. crassifolium.