Padina minor

Thallus small, flabellate, infundibular, with broadly rounded lobes, shortly stipitate, often split into fan-shaped blades with incurved edges, 5–7(–10) cm high, moderately calcified, yellowish-brown, or whitish-brown. Hairs on both sides of the blades. Thallus thin, two cell layers throughout, 60–75 μm thick at basal portion. In cross section, cells of the upper layers smaller than that of lower one. Reproductive organs in concentric rows on ventral surface above every hair zone. Tetrasporangial sori without indusium. Fertile and sterile zones equal in width. Attachment by stypose discoid holdfast. Growing on rocks and dead corals in the middle intertidal (tidal pools) to subtidal zones exposed to moderate wave action.

Indian Ocean Islands, South-west Asia (Arabian Gulf, Sri-Lanka). The Asia-Pacific countries: China, Japan, Korea, Taiwan, Vietnam, Thailand, Philippines, Indonesia, Pacific Islands.