細胞性粘菌の分類学的研究.第2報.ファーロウ標本庫(FH)に保管されている,E. W. Olive作成のDictyostelium brevicaule, D. mucoroidesおよびD. sphaerocephalumの証拠標本の再検討

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A total of 30 voucher specimens used in Olive (1901) were examined. Of these, 3 specimens were labeled as Dictyostelium brevicaule; 15, as D. mucoroides; and 12, as D. sphaerocephalum. The lectotype of D. brevicaule was designated in this study, and this species was arranged in the synonymy of D. mucoroides. The group of the specimens labeled as D. mucoroides could not be distinguished from that of the specimens labeled as D. sphaerocephalum not only with regard to the spore size but also other characters. Moreover, both the groups comprised 4 or more taxa each including 2 common taxa. These results confirmed the statement in Olive (1902), "it may prove desirable to unite these two variable species."
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