Dijoux L., Verbruggen H., Mattio L., Duong N. & Payri C. (2012)
Diversity of Halimeda (Bryopsidales, Chlorophyta) in New Caledonia: a combined morphological and molecular study
Journal of Phycology 48: 1465-1481


Halimeda is a genus of calcified and segmented green macroalgae in the order Bryopsidales. In New Caledonia, the genus is abundant and represents an important part of the reef flora. Previous studies recorded 19 species identified using morphological criteria. The aim of the present work was to reassess the genus' diversity in New Caledonia using morpho-anatomical examinations and molecular analyses of the plastid tufA and rbcL genes. Our results suggest the presence of 22 species. Three of these are reported for the first time from New Caledonia: H. kanaloana, H. xishaensis, and an entity resembling H. stuposa. Furthermore, DNA analyses revealed that H. fragilis species exhibit cryptic or pseudocryptic diversity in New Caledonia. We also show less conclusive evidence for cryptic species within H. taenicola.

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