Solanaceae Source

A global taxonomic resource for the nightshade family

Feb 19th, 2021 - Michael Dillon & Victor Quipuscoa Silvestre

Next SOL Seminar Online will be presented by Michael Dillon & Victor Quipuscoa Silvestre on Accidental Solanologist in the driest place on Earth! & El género Nolana en Perú: diversidad y distribución

Abstract. Accidental Solanologist in the driest place on Earth! Nolana L. ex L.f. (Nolaneae-Solanaceae) is an easily recognized genus comprised of 90 species confined to Peru and Chile, and one endemic to Galapagos Islands, Ecuador. It is among the five or six largest genera in the family and has its greatest species diversity in coastal southern Peru and northern Chile. These regions are dominated by vegetation termed lomas formations that exist as virtual islands of highly endemic communities all utilizing available moisture from fog (camanchaca or garua). While most species have their distributions in near-shore habitats, no fewer than five species can be found in habitats far removed from the oceans influence and at elevations over 1000 m. Nolana stands out as the most wide-ranging and conspicuous floristic element of these formations. In many modern classifications, members of the Nolana have been recognized at the familial (Nolanaceae) or subfamilial (Nolanoideae) rank due to its unusual carpel morphology, but data from molecular studies have provided unequivocal evidence that Nolana is nested within the Solanaceae. A phylogeny has been constructed for Nolana using a wide variety of markers and this hypothesis of relationships provides a framework establishing a classification, testing character evolution, and biogeographic reconstructions. Nolana is consistently monophyletic and purposed genera within Nolana, e.g., Alona Lindl. and Sorema Lindl. are also monophyletic. Molecular and morphological studies have led to the recognition of putative clades confined to either Chile or Peru.

El género Nolana en Perú: diversidad y distribución. La familia Solanaceae con 120-150 especies en Arequipa, posee 42 especies endémicas agrupadas en los géneros Jaltomata, Leptoglossis, Nicandra, Nicotiana, Nolana y Solanum, de las cuales 20 son exclusivas y Nolana (78%) concentra la mayor cantidad de especies endémicas exclusivas. El género Nolana en Perú consta de 43 especies, de las cuales 40 son exclusivas de Perú, con tres especies que comparten distribución con el norte de Chile (N. adansonii (Roem. & Schult.) I.M. Johnst., Nolana gracillima (I.M. Johnst.) I.M. Johnst., N. lycioides I.M. Johnst.). En Perú crecen desde cerca del mar (N. thinophila I.M. Johnst.) hasta 4000 m de elevación (N. confinis (I.M. Johnst.) I.M. Johnst.). La mayor cantidad de especies se distribuyen en la costa como componentes de la formación de lomas (28), ocho son exclusivas de vertientes occidentales, seis comparten ambos ecosistemas y una especie crece en la isla San Gallán (Ica). En Arequipa Nolana contiene 30 especies, de las cuales 28 son endémicas y 16 son exclusivas. Las tres provincias de la costa de Arequipa Caravelí (14 spp.), Camaná (14 spp.) e Islay (12 spp.) concentran mayor diversidad y una especie en la Provincia de Castilla. Los análisis acerca del impacto del cambio climático y cambio del uso de suelo, nos indican que las especies poseen cambios negativos y positivos que debemos tener en cuenta para su conservación.

When? Friday 19th February 3 pm (GMT+1)

The zoom link to join the meeting is https://cuboulder.zoom.us/j/94333146166 Meeting ID: 943 3314 6166, password: Solanaceae

Watch this talk here: https://youtu.be/uISgr031zpU

  

   

Date: 
Friday, February 19, 2021 - 03:00
Sat, 2021-02-20 04:15 -- rocio
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