長崎県におけるキク科植物数種の季節現象

概要

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There is a resemblance between Taraxacum officinale and Youngia japonica in that they have two peaks of flowering. Youngia japonica in the district may be said to be a perennial herb which scarcely withers after flowering. In Aster subulatus, there are some perennial individuals of which the stembases remain after flowering and then bud next spring. Although Galinsoga parviflora somewhat declines in number of individuals in winter, it germinates, grows, blooms, and bears fruit throughout the year. Chrysanthemum indicum and Aster hispidus are seen till about March at the seaside districts. Some of the latter are perennial. The author made clear, in this paper, the attachable term of mature seeds on several wild herbs, which had never been reported.
1974-03-30