ORDER GELIDIALES: All Listings 

1. Tetrasporangial plant. 2. Cross section. 3. The upper intertidal zone (Amakusa Island, Japan). April 2013.

Portion of sporophytic plant showing branching pattern (in aquarium). The plant taken from a speciament cast ashore (Yellow Sea, Qingdao City, China, October 2008). Inset: habit (Japan, Amakusa Island. April 2013.

1. Fragment with tetrasporangial branchlets. 2. Transverse section. 3. Habit (Wenchang, Hainan Island, China), March 2012).

1. Habit. 2. Fragment. 3. Upper subtidal (Amakusa Island, Japan). April 2013.

1. Habit. 2. Part of transverse section of the plant. 3. In the subtidal zone on rocky substratum (Amakusa Island, Japan). April 2013.

Low intertidal at fringing coral reef of Sesoko Island (Okinawa, Japan), April 2003.

1. Habit. 2. In aquarium. Plants taken from the low intertidal dead corals (Hainan Island, China). April 2012.

In habitat (Hainan Island, China). March 2012. Insets: Cross section and habit.

1. Habit. 2, 3. In habitat, the subtidal zone (Amakusa Island, Japan). April 2013.

Habit. Intertidal pool (Cape Ba Lang An, Vietnam), March 2009. Upper inset: Habit (Hainan Island). March 2012. Lower inset: Fragment of transverse section.

1. Mature tetrasporangial stichidia. 2. Fragment of creeping axis with rhizoids. 3. Surface view of external cortical cells. 4. Habit with tetrasporangial stichidia (Sesoko Island, Okinawa, Japan). April 2003.

1. Transverse section. 2. Tetrasporangial stichidium. 3. Rhisoids. 4. In habitat (Hainan Island, China). Inset: Habit. April 2012.