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| Merckx, V.; Schols, P.; Geuten, K.; Huysmans, S.; Smets, E.F.. |
| Amolecular phylogenetic analysis of Nartheciaceae is presented, with nine species of the family’s five genera. The main phylogenetic findings are: (a) Nietneria and Narthecium are placed in a clade sister to Lophiola; (b) sister to the Lophiola-Narthecium- Nietneria clade is a clade formed by Aletris and the monospecific Metanarthecium; (c) the inclusion of Metanarthecium luteo-viride in Aletris, as proposed by several authors, is well supported. The pollen and orbicule morphology of representatives of five genera is described. The results underline a close relationship between Nietneria, Narthecium, and Lophiola and confirm the previously reported observations of Metanarthecium pollen and the types of sexine ornamentation in Aletris. Pollen grains of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dioscoreales Nartheciaceae Nietneria molecular phylogeny orbicules pollen morphology 42.43; 42.48; 42.57. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/449539 |
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| Veldkamp, J.F.. |
| Themeda Forssk. (Gramineae) has 11 taxa in Malesia. A revision is provided with keys, synonymy, where necessary lectotypifications, descriptions, and notes. Themeda gigantea nearly is a Philippine endemic, but with a single collection from Halmahera, and one as far away as the Solomon Islands. Themeda caudata is reduced to T. villosa var. caudata, comb. nov., and T. intermedia to T. villosa var. polyantha, comb. nov. Themeda polycephala, a new species, is described from Laos. Themeda hookeri is a new record for Thailand. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Lectotypification; Thailand; 42.57; 42.48. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/606337 |
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| 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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