((('Isoetes australis DR','Isoetes australis MR'),('Isoetes coromandelina','Isoetes panamensis')),'Isoetes capensis',((('Isoetes nuttallii','Isoetes orcuttii'),('Isoetes abyssinica','Isoetes velata')),('Isoetes malinverniana',(('Isoetes drummondii',('Isoetes taiwanensis','Isoetes kirkii')),(('Isoetes setacea','Isoetes histrix'),'Isoetes melanopoda')))));