Coenogonium subvirescens之正名及臺灣新記錄種C. interplexum

The taxonomic status of Coenogonium subvirescens and C. interplexum newly found in Taiwan

(1) Two species of Coenogonium are treated. C. interplexum Nyl. is recorded for the first time from Taiwan. (2) C. linkii Ehrenb. is redetermined for C. subvirescens (Nyl.) Nyl.; C. boninense Sato is suggested to be conspecific with C. linkii Ehrenb.; C. subvirescens (Nyl.) Nyl. must be rejected as a nomen dubium. (3) It is emphasized that C. linkii Ehrenb., type species of this genus, is a simple-spore species; C. linkii Ehren b. sens. lat. is suggested to include C. subvirescens (Nyl.) Nyl., C. leprieurii (Mont.) Nyl. and also C. boninense Sato. (4) C. implexum Nyl.. C. curvulum Zahlbr. and C. disjunctum Ny. are suggested to be very near to C. interplexum Nyl.