Abstract
Abstract Gametophyte development and embryogeny is described in Phyllocladus trichomanoides D. Don for the first time, and the proem-bryo of P. asplenifolius var. alpinus H. Keng is reinvestigated. The three New Zealand species typically have a strongly thickened megaspore membrane, two large elongated and deeply embedded archegonia containing an enlarged egg nucleus, conspicuously unequal male gamete nuclei, and one or both prothallial nuclei free in the pollen tube. Proem bryogeny in both the species investigated conforms to the pattern established for a wide range of genera in the Podocarpaceae, resulting in a three-tiered proembryo in which all the cells of the E tier are binucleate. This is seen as strong evidence of a close affinity between Phyllocladus and other genera of the Podocarpaceae, and supports the retention of the genus in that family
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