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of the pedicels is frequent in the genus and at least until other more convincing differences are found this plant of Eriedriehsthal may be provisionally placed as B. Kellermaxii, forma podocephala, forma now, formae typicae simillima differt i-apitulis graeiliter pedieelhttis; pedieellis 3-10(-20) mm.longis erectis vel adscendentibus.
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Ivan M Johnston (1923) studied this question.
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