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Grant, Jason

Nom
Grant, Jason
Affiliation principale
Fonction
Professeur.e ordinaire
Email
jason.grant@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/30709
_
0000-0002-1197-1131

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  • Publication
    Accès libre
    DE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS III: SIX NEW SPECIES OF MOON-GENTIANS (MACROCARPAEA, GENTIANACEAE: HELIEAE) FROM PARQUE NACIONAL PODOCARPUS, ECUADOR
    Grant, Jason 
    ;
    Struwe, Lena
    In preparation for the Flora Neotropica monograph of Macrocarpaea (Gentianaceae: Helieae) and recent fieldwork in Ecuador, six new species have been identified and are here described from Parque Nacional Podocarpus and its surrounding areas in Loja and Zamora-Chinchipe provinces. These are Macrocarpaea apparata, M. bubops, M. jensii, M. lenae, M. luna-gentiana, and M. noctiluca. For each new species, descriptions, illustrations, and ecological information are provided. The neotropical montane genus Macrocarpaea has among the highest biodiversity in Ecuador with over 30 species present. The name “moon-gentian” or “genciana de luna” is coined as the common name for the genus Macrocarpaea.
  • Publication
    Accès libre
    YANOMAMUA ARACA (GENTIANACEAE), A NEW GENUS AND SPECIES FROM SERRA DO ARAÇÁ, AN OUTLIER OF THE GUAYANA REGION IN AMAZONAS STATE, BRAZIL
    Grant, Jason 
    ;
    Maas, Paul J. M
    ;
    Struwe, Lena
    Yanomamua araca is described as a new genus and species from Serra do Araçá, an outlier of the Guayana Region in the state of Amazonas, Brazil. Yanomamua is unique in the Gentianaceae as an herb with sessile subcordate pandurate (fiddle-shaped) leaves, and inflorescences composed of oppositely paired solitary flowers situated in the axils of the upper three leaf pairs. Only limited material is available, and flower morphology is unknown. A phylogenetic approach was used to investigate possible relationships to other genera in Helieae, which yielded a likely relationship to several genera in the Symbolanthus-Chelonanthus clade but not a strong relationship to any particular genus. Instead it appears that this genus might represent a more internal, older branch within the tribe.