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Arisaema aequinoctiale

A species endemic to the Boso-peninsula. A. undulatrifolium subsp. uwajimense and A. u. var. yoshinagae may be included in this species, but they are treated as different species here.

It is very similar to A. limbatum, and there are populations that are difficult to distinguish from the northern Boso-peninsula to Mt. Tsukuba.

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