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A new species of Afrothismia (Burmanniaceae; tribe: Thismieae) from the western foothills of Mount Cameroon Naturalis
Franke, Th.; Sainge, M.N.; Agerer, R..
Afrothismia foertheriana, a new species of Burmanniaceae (tribe: Thismieae) from the peripheral zone of the Onge Forest Reserve in Cameroon’s Southwest Province is described and illustrated. The papillose, multicellular floral trichomes, the tepal’s erose margins, the small, zygomorphic perianth mouth and the dull purplish brown coloration give A. foertheriana a distinctive appearance within the genus. The species is here assessed as being critically endangered.
Tipo: Article / Letter to the editor Palavras-chave: Burmanniaceae; Thismieae; Afrothismia foertheriana; Cameroon; Conservation; Taxonomy.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/524860
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Diversification of myco-heterotrophic angiosperms: evidence from Burmanniaceae Naturalis
Merckx, V.; Chatrou, L.W.; Lemaire, B.; Sainge, M.N.; Huysman, S.; Smets, E.F..
Background: Myco-heterotrophy evolved independently several times during angiosperm evolution. Although many species of myco-heterotrophic plants are highly endemic and longdistance dispersal seems unlikely, some genera are widely dispersed and have pantropical distributions, often with large disjunctions. Traditionally this has been interpreted as evidence for an old age of these taxa. However, due to their scarcity and highly reduced plastid genomes our understanding about the evolutionary histories of the angiosperm myco-heterotrophic groups is poor. Results: We provide a hypothesis for the diversification of the myco-heterotrophic family Burmanniaceae. Phylogenetic inference, combined with biogeographical analyses, molecular divergence time estimates,...
Tipo: Article / Letter to the editor Palavras-chave: Myco-heterotrophy angiosperm evolution pantropical distribution reduced plastid genomes evolutionary history Burmanniaceae West Gondwana diversification boreotropical migration Eocene 42.44; 42.48; 42.57.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/449529
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