Effects of Orchinol, Loroglossol, Dehydroorchinol, Batatasin III, and 3,4'- Dihydroxy-5-Methoxydihydrostilbene on Orchid Seedlings. Katherine A. Hills, Albert Stoessl, Allison P. Oliva and Joseph Arditti, Botanical Gazette, September 1984, Vol. 145, No. 3, pages 298-301 (link)