Comments on hybridisation; cites authorities. Sends book by Wilhelm Olbers Focke [Die Pflanzen-Mischlinge (1881)].
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Comments on hybridisation; cites authorities. Sends book by Wilhelm Olbers Focke [Die Pflanzen-Mischlinge (1881)].
Comments on GJR’s article on hybridisation.
Recommends his article ["Fertility and hybrids from the Chinese and common goose", Collected papers 2: 219–20].
Discusses crosses of Lythrum.