Bikosoeca J. Clark (ref. ID; 3517)
Synonym; Bicoeca Stein (ref. ID; 3517)

• Bikosoeca campanulata (Lackey) Skuja (ref. ID; 3517)
• Bikosoeca lacustris J. Clark (ref. ID; 3517)
• Bikosoeca oculata Zach. (ref. ID; 3517)
• Bikosoeca ovata Lemmermann (ref. ID; 3517)