Observations on the cytology and taxonomy of the pteridophyte flora of Ceylon

摘要: Cytological observations have been made on 155 entities (excluding sterile hybrids) referable provisionally to ca. 140 existing taxa in the fern flora of Ceylon. These supplemented by 69 (involving 46 additional species) from wild material ferns other countries, chiefly Malaya, and 15 species unknown origin growing at Kew. The cytological findings are assembled relation taxonomic system Copeland (1947) which is discussed a preliminary way together with relevant portions alternative Holttum (1947).