1. Factors affecting the germination of orchid seeds;Arditti;Bot. Rev.,1967
2. Orchid Biology: Reviews and Perspective II;Arditti,1982
3. The Genus Paphiopedilum;Cribb,1998
4. Seed germination in vitro of Paphiopedilum armeniacum and P. micranthum;Chen;Acta Hortic. Sin.,2004
5. China Species Red List, 2012. http://www.chinabiodiversity.com/redlist/search/index.shtm.