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Grant, Jason
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Grant, Jason
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Professeur.e ordinaire
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jason.grant@unine.ch
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Voici les éléments 1 - 7 sur 7
- PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS : IV: ELEVEN NEW SPECIES OF MACROCARPAEA (GENTIANACEAE: HELIEAE) FROM CENTRAL AND SOUTH AMERICA, AND THE FIRST REPORT OF THE PRESENCE OF STIPULES IN THE FAMILY
; Weaver, Richard E. JrProgress toward a taxonomic revision of Macrocarpaea (Gentianaceae: Helieae) has revealed numerous novelties in this morphologically diverse and unexpectedly species-rich genus. Eleven new species are here described and illustrated from Central and South America: Colombia (M. nicotianifolia and M. schultesii), Costa Rica (M. auriculata), Ecuador (M. subsessilis), Peru (M. gracilis, M. maguirei, M. wurdackii, and M. zophoflora), and Venezuela (M. ewaniana, M. papillosa, and M. weaveri). Macrocarpaea zophoflora is notable for being the first species to be described of Gentianaceae that is known, or recognized, to have free deciduous interpetiolar stipules. The family was previously defined as exstipulate without exception. - PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS III: SIX NEW SPECIES OF MOON-GENTIANS (MACROCARPAEA, GENTIANACEAE: HELIEAE) FROM PARQUE NACIONAL PODOCARPUS, ECUADOR
; Struwe, LenaIn 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. - PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS XI: FIVE NEW SPECIES FROM THE ANDES OF ECUADOR AND COLOMBIAFive new species are described from Andean regions of Colombia and Ecuador including M. catherineae, M. cortinae, M. illuminata, M. pacifica, and M. umbellata. Macrocarpaea stenophylla is reported as a range extension from Peru to Ecuador.
- PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS VIII: FOUR NEW SPECIES FROM ECUADORTwo new species, Macrocarpaea claireae and M. quizhpei (Gentianaceae: Helieae), are described from the Huancabamba region of southern Ecuador. Macrocarpaea claireae occurs around Valladolid, adjacent to P. N. Podocarpus, and M. quizhpei occurs in the Nangaritza watershed. M. claireae is closely related to M. pringleana and M. sodiroana, yet differs notably in its glaucous-green, campanulate-urceolate calyx. Macrocarpaea quizhpei has affinities to M. dies-viridis, but differs in having a large, diffusely branched, open thyrse to 1.3 m high.
- PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS XII: THREE NEW SPECIES FROM THE ANDES OF PERUThree new species from Peru, Macrocarpaea abiseo, M. felicitata, and M. huamantanga, are described and illustrated.
- PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS VI: SEED MORPHOLOGY, PALYNOLOGY, AN INFRAGENERIC CLASSIFICATION , AND ANOTHER TWENTY-THREE NEW SPECIES LARGELY FROM COLOMBIAA brief survey of seed morphology and palynology in Macrocarpaea is discussed and illustrated by Scanning Electron Microscopy (SEM) photographs. An infrageneric classification is presented where four sections are recognized: sect. Tabacifoliae, sect. Macrocarpaea, sect. Magnolifoliae, and sect. Choriophylla. Another 23 new species, largely from Colombia, are here described and illustrated: Brazil (1): M. illecebrosa; Colombia (14): M. betancuriana, M. callejasii, M. gaudialis, M. gondoloides, M. gravabilis, M. gulosa, M. hilarula, M. jocularis, M. lacrossiformis, M. laudabilis, M. maryae, M. silverstonei, M. umerulus, and M. ypsilocaule; Ecuador (4): M. berryi, M. jactans, M. neillii, and M. voluptuosa; and Peru (4): M. chthonotropa, M. granpajatena, M. quechua, and M. xerantifulva.
- PublicationAccès libreDE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS VII: FOUR NEW SPECIES AND TWO NATURAL HYBRIDSFour new species, Macrocarpaea dies-viridis (Ecuador), M. luctans (Ecuador, Peru), M. lucubrans (Panama), and M. opulenta (Ecuador), and two natural hybrids, M. × acuminata (Costa Rica) and M. × mattii (Ecuador), are described. Macrocarpaea × acuminata Weaver (pro sp.) is recognized as a natural hybrid between M. subcaudata and M. valerii, rather than as a distinct species, and M. × mattii is described here as a natural hybrid between M. noctiluca and M. subsessilis. The average number of seeds per capsule of M. dies-viridis is reported. With 10,400–11,000 seeds per capsule, the is first report in the genus.