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And further, certain by-generic seedlings have utterly ignored one parent. Zygopetalum Mackayi has been crossed by Mr. Veitch, Mr. Cookson, and others doubtless, with various Odontoglossums, but the flower has always turned out Zygopetalum Mackayi pure and simple which becomes the more unaccountable more one thinks of it.
Z. maxillare crossed with Z. Mackayi demands five years to bloom, but vice versâ nine years. There is a case somewhat similar, however, among the Cypripeds. C. Schlimii crossed with C. longifolium flowers in four years, but vice versâ in six.
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