Revision of the hichen genus hypotrachyna (Parmehiaceae) in tropical America
Hale, M.E.
Revision of the hichen genus hypotrachyna (Parmehiaceae) in tropical America - Washington 1975 - 73 p. - No. 25; Smithsonian Contributi .
Revision of the hichen genus hypotrachyna (Parmehiaceae) in tropical America - Washington 1975 - 73 p. - No. 25; Smithsonian Contributi .