Morphology and taxonomy of Caloglossa (Delesseriaceae, Rhodophyta)

Abstract

The genus Caloglossa J. Agardh is revised and eight species are recognised. One new species is described (C. adhaerens R. J. King et Puttock, sp. nov.), one new combination is made (C. bengalensis (G. Martens) R. J. King et Puttock, comb. nov.), and two forms of C. leprieurii are raised to specific status (C. triclada (E. Post) R. J. King et Puttock, stat. nov. and C. continua (Okamura) R. J. King et Puttock, stat. nov.) In Caloglossa continua four subspecies are recognised: C. continua ssp. continua; C. continua ssp. avillaris R. J. King et Puttock, ssp. nov.; C. continua ssp. postiae R. J. King et Puttock, ssp. nov.; and C. continua ssp. saigonensis (Tanaka et Pham-Hoang HB) R. J. King et Puttock, stat. nov. Detailed descriptions, taxonomic notes and a key are provided for these taxa and the previously described species that we recognise in the genus (C. beccarii (Zanardini) De Toni, C. leprieurii (Montagne) J. Agardh, C. ogasawaraensis Okamura and C. stipitata E. Post). Caloglossa leprieurii var. angusta Jao is a synonym of C. continua ssp. saigonensis, and C. adnata f. divaricata E. Post is included within C. leprieurii.