Tylotus lichenoides Okamura (1921 , p. 98

Tylotus lichenoides Okamura (1921, p. 98 , pl. 173, fig. 8–15)

This long-obscure species is recorded from Japan, China and Taiwan (M. D. Guiry and G. M. Guiry, AlgaeBase, see https:// www.algaebase.org). The thallus illustrated ( Fig. 1 m View Fig ) appears very similar to common forms of T. obtusatus in the dark coloring and generally dichotomous flabellate axes but a wide variety of frond morphological characteristics and branching patterns has been illustrated by other authors ( Arasaki 1964, p. 97, number 349; Segawa 1967, pl. 66, number 425; Tanaka and Nakamura 2004, p. 169; Tseng 1983, pl. 61, fig. 1). The best illustrations of internal structures are those in the protologue of Okamura (1921, pl. 173).

Fig. 9–11 View Fig View Fig View Fig illustrate the salient features of three previously undescribed genera and species that were discovered during the course of collections (see ‘Specimen data: sources of morphological illustrations’ section and Table S 1 in the Supplementary material) for molecularly assisted taxonomic studies. Formal descriptions of these new taxa are provided below.