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KMID : 1024520020110101001
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Journal of the Environmental Sciences
2002 Volume.11 No. 10 p.1001 ~ p.1009
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A phylogenetic study of Geranium (Geraniaceae) on the vegetative characters
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Park Sun-Joo
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Abstract
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Vegetative characters (e.g. habitat, root, ramification and habit of stem, phyllotaxy, leaf sape, shape of leaf margin, shape of division and lobe of division, number of division, thick and texture of leaf and shape of stipule) on 35 species of Asian Geranium were reviewed to discussion propriety of taxonomic character and evolutionary trends. Wilfordii group is characterized by three divided leaf, Farreri group was grown a high altitude, and Maculatum group is grouped by life cycle of anneal. Arrangement state of leaf is alternate type G, tripartitum, G. eriostemon, and G. erianthum is thought the more primitive than the other taxon, and regarded as more advanced group the sibiricum group and pseudosibiricum group which divided of leaf deeply. Shape of leaf, division degree of lobes, shape of leaf margin and number of division are considered a good identification characters because width of change are fixed between population.
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KEYWORD
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Genus Geranium, Vegetative characters, Taxonomic character, Evolutionary trends, Identification characters
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