Revision of Study site from Mon, 2015-08-10 17:13

Study site of pteridophyte in Northeastern floristic region as follow
 

1. Phu Hin Rong Kla National Park, Phetchbun Province
2. Phu Luang Wildlife Sancuary. Loei Province
3. Phu Kra Dung National Park, Loei Province