<国立科博専報>日本海要素植物の分類地理学的研究 : I. 北方系日本海要素について(合弁花類)

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The Japan-Sea side element has been recognized as one of the important elements that constitute the Japanese flora. Considering the distributional pattern of flowering plants, FUKUOKA (1965,1966) has recognized two groups of different origin in the Japan-Sea side elements. One is temperate plants (=temperate element) which may have dispersed from Central China through Manchuria and Korea, and the other is arctic and northern plants which may have come down from Sakhalin or from further northern regions. Having the new materials at hand, we have attempted to present the distribution maps in this and forthcoming papers for the Japan-Sea side elements and also revised the taxonomic relationship between the species and its allies. Out of the Japan-Sea side elements, the following taxa are reported in this paper as the northern species among the Japan-Sea side elements in the Sympetalae. 1) Artemisia schmidtiana MAXIM. 2) Cacalia auriculata DC. var. kamtschatica (MAXIM.) MATSUM. 3) Pennellianthus frutescens (LAMB.) CROSSWHITE 4) Fauria crista-galli (MENZIES) MAKINO 5) Gentiana nipponica MAXIM. 6) Swertia tetrapetala PALLAS 7) Primula cuneifolia LEDEB. (s. l.) 8) Harrimanella stelleriana (PALL.) Cov. Although Rhododendron albrechtii MAXIM. is cited up in this paper, further studies are necessary as to the taxonomic relationship among this species and its allies. Outside of the above list, Mimulus sessilifolius MAXIM. and Primula jesoana MIQ. have been considered as the northern elements of Japan-Sea side. The allies of these species are not distributed in northern regions. Thus, these two species had better be considered as the temperate elements.
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<国立科博専報>日本海要素植物の分類地理学的研究 : I. 北方系日本海要素について(合弁花類)

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