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| khalik,Kadry N. Abdel. |
| A systematic study of 29 taxa belonging to 7 genera of subfamilies Balanitoideae, Zygophylloideae, Peganoideae, Tribuloideae, Seetzenioideae and Tetradiclidoideae of Zygophyllaceae from Egypt was carried out by means of numerical analysis based on sixty-one morphological characters, including vegetative parts, pollen grains and seeds. On the basis of UPGMA clustering and PCO analysis, six main groups are recognized. Representatives of these groups are clustered together based on characters with high factor loadings in the PCO analysis. The results indicate that Zygophyllaceae are heterogeneous, including Peganum harmala which has been proposed to belong in a separate family. Zygophylloideae, Tribuloideae, Tetradiclidoideae and Seetzenioideae are the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zygophyllaceae; Balanitoideae; Zygophylloideae; Peganoideae; Tribuloideae; Seetzenioideae; Tetradiclidoideae; Numerical taxonomy; UPGMA cluster; PCO. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000100017 |
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| Welzen, P.C. van; Slik, J.W.F.. |
| Distribution patterns or the recognition of phytogeographical areas is usually based on the presence and absence of species. The taxa on which the analyses are based remain virtually anonymous. Here we want to determine which Malesian plant families (within the sample) are responsible for species richness and composition patterns. The other aim is to determine whether the different islands groups in Southeast Asia can be grouped into separate phytogeographical areas. A Principal Coordinates Analysis (PCO) showed the presence of three phytogeographical areas within Malesia: The Sunda Shelf (Malay Peninsula, Sumatra, Borneo) in the west, the Sahul Shelf (New Guinea) in the east, and all remaining central areas forming Wallacea. The latter can be divided into... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Floristic patterns; Malay Archipelago; Malesia; PCO; Plant families; Species richness. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/525639 |
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