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Fieldwork, Herbarium Revisions, and DNA Barcodes: Basic Ingredients to Shed Light on the Dark Realms of Plant Biodiversity, an Example with Two Enigmatic Andean Carex (Cyperaceae) Species

Ana Morales Alonso ; Sebastian Gebaue ; Asunción Cano ; Nora H. Olea ; Jairo Pinto-Zárate ; Santiago Martón-Bravo ; Pedro Jiménez-Mejías

Systematic botany, 2024-05 [Periódico revisado por pares]

American Society of Plant Taxonomists

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  • Título:
    Fieldwork, Herbarium Revisions, and DNA Barcodes: Basic Ingredients to Shed Light on the Dark Realms of Plant Biodiversity, an Example with Two Enigmatic Andean Carex (Cyperaceae) Species
  • Autor: Ana Morales Alonso ; Sebastian Gebaue ; Asunción Cano ; Nora H. Olea ; Jairo Pinto-Zárate ; Santiago Martón-Bravo ; Pedro Jiménez-Mejías
  • É parte de: Systematic botany, 2024-05
  • Descrição: Two recent fieldwork expeditions to Peru and Ecuador resulted in the finding of two Carex species ( C. hypsipedos and C. sanctaemarthae ) previously known from a single collection each, and of uncertain morphological and systematic affinities. We performed phylogenetic analyses using barcode molecular markers and a detailed morphological comparison among the new specimens and the original collections. A BLAST search was used to obtain the preliminary infrageneric affinities of problematic samples. Phylogenetic results confirmed the adscription of these species to two sectional Carex groups: Carex sect. Racemosae (subg. Carex ) for C. hypsipedos and Carex sect. Junciformes (subg. Psyllophorae ) for C. sanctae-marthae . Morphological revision revealed unique traits in C. hypsipedos , especially geocarpy, here strikingly reported for the first time for the genus Carex . On the other hand, the careful comparison of the new materials of C. sanctae-marthae revealed unequivocal affinities with the type, confirming its identity as this species. Our work illustrated that for the understanding of poorly known groups, such as these two Neotropical Carex , integrative approaches combining basic biosystematics tools are still very necessary: field and herbaria surveys and DNA barcode.
  • Editor: American Society of Plant Taxonomists
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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