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Updated: May 26, 2025
This species has been employed by the hybridists for the obtaining of new kinds, and some very handsome and distinct varieties have consequently been raised. As well as crossing with other species of Phyllocactus, P. Akermanni has been used in combination with several species of Cereus, good hybrids having been the result.
Mendel published it in 1865, but his paper remained nearly unknown to scientific hybridists. It is only of late years that it has assumed a high place in scientific literature, and attained the first rank as an investigation on fundamental questions of heredity.
It would be quite superfluous to adduce single cases as proofs for this rule, which was formerly conceived to hold good for hybrids in general. The work of the older hybridists, such as Koelreuter and Gaertner affords numerous instances. Our third rule is of a wholly different nature.
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