In ganz ähnlicher Weise erklärt sich die Entwicklungsreihe der Hybriden, wenn in denselben dreierlei differirende Merkmale verbunden sind.
In an entirely similar way the developmental series of hybrids is explained when three kinds of differing traits are conjoined in them.
developmental series = Entwicklungsreihe See p. 17, s. 6.
three kinds of differing traits = dreierlei differirende Merkmale On the term differirend see p. 5, s. 5, on the suffix -lei see p. 42, s. 4 .
conjoined = verbunden See p. 10, s. 14.
in them = in denselben The grammatic form of this pronoun (plural, female) makes it clear that it refers to the hybrids, not to the devlopmental series, as Sherwood has it.