Serological relationship between Gloeophyllum trabeum and Gloeophyllum saepiarium

Gloeophyllum trabeum (Fr.) Murr. produced eight precipitin lines in homologous serological reactions in double-diffusion experiments. Five of these lines were similar to the precipitin lines developed with G. saepiarium (Fr.) Karst. antigens, indicating a close serological relationship between the two organisms.