Acta Phytotaxonomica et Geobotanica
Online ISSN : 2189-7042
Print ISSN : 1346-7565
ISSN-L : 1346-7565
Cryptic Species in the Fern Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae). IV. Taxonomic Revision
SHIGEO MASUYAMAYASUYUKI WATANO
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2010 Volume 61 Issue 2 Pages 75-86

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Abstract

Herbarium specimens referable to Ceratopteris thalictroides in the sense of Lloyd were examined and the following cryptic taxa were recognized; C. thalictroides, C. gaudichaudii var. gaudichaudii, C. gaudichaudii var. vulgaris (var. nov.), C. oblongiloba (sp. nov.), and C. froesii. Compared with C. thalictroides s.str., C. gaudichaudii var. vulgaris is basically characterized by short stipes and dense pinnae, while C. oblongiloba is characterized by dense pinnules and narrowly oblong terminal lobes. A key to distinguish them and descriptions of the taxa are presented.

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© 2010 The Japanese Society for Plant Systematics
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