A comparative study of the North AmericanPyrola asarifolia and its Asian vicariad,P. incarnata (Ericaceae)

Autor: Hideki Takahashi, Erich Haber
Rok vydání: 1988
Předmět:
Zdroj: The Botanical Magazine Tokyo. 101:483-495
ISSN: 1618-0860
0006-808X
Popis: Samples of North AmericanPyrola asarifolia and its Asian vicariad,P. incarnata, were compared in morphology and leaf flavonol constituents. No qualitatively distinct attributes separate the plants from these two regions. In addition, a broad overlap exists in the ranges of the 11 morphological characteristics examined. Both Asian and North American plants exhibit some regional differentiation, but no simple clinal pattern is evident. Sepal width is the only morphological characteristic that exhibits a bimodal tendency in sample means. Asian plants have significantly narrower sepals compared with the North American samples. The chromatographic pattern of leaf flavonols in the Asian plants is distinct from the North American because of the reduced number of compounds present and in having one large, highly concentrated quercetin glycoside as the major constituent. The Asian vicariad is recognized asP. asarifolia Michaux subsp.incarnata (DC.) Haber & Takahashi, comb. nov. It is also considered to have a close affinity with the EurasianP. rotundifolia.
Databáze: OpenAIRE
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