メギ科の分類体系について
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概要
- 論文の詳細を見る
The Berberidaceae are a family comprising 16 genera, about 650 species and are placed in Ranunculales or Berberidales. This family is characterized by pseudomonomerous pistils, anthers opening by valves, trimery of flowers and the presence of fused cotyledons and medullary bundles in the stem in some genera, and isoquinolin-base alkaloid. Several contributions to be system of the Berberidaceae have been made since previous century and some taxa have been recognized in the family. Phylogenetic relationships of these taxa, however, are difficult to be understood, as morphological gaps among these taxa are not small. The present author proposes to establish the following system of the Berberidaceae, taking the information of various characteristics available at present into consideration. Nandina is considered to constitute a mono-typic taxon, Nandinoideae, based on the uniqueness in perianth morphology, ovular morphology, seed coat anatomy, karyology and so on. The other sub-family, Berberidoideae consists of four tribes; Berberideae (Berberis and Mahonia), Ranzanieae (Ranzania), Epimedieae (Epimedium, Vancouveria, Plagiorhegma, Jeffersonia, Achlys, Caulophyllum, Leontice, Gymnospermium and Bongardia), and Podophylleae (Podophyllum, Dysosma and Diphylleia). Ranzanieae is phylogenetically placed between Berberideae and Epimedieae in vegetative morphology. Epimedieae is divided into two subtribes; Epimediinae (Epimedium, Vancouveria, Plagiorhegma, Jeffersonia and Achlys) and Leonticinae (Caulophyllum, Leontice, Gymnospermium and Bongardia), based mainly on pistillate morphology.
- 日本植物分類学会の論文
- 1982-04-20
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