Template:Downie, 1925
- Downie, D.G. 1925. Contributions to the Flora of Siam. Additamentum XVI. Bulletin of Miscellaneous Information, Royal Gardens, Kew 1925(9): 367–394. DOI: 10.2307/4107477
New taxa:
- Aerides flabellata Rolfe
- Ascotainia siamensis Rolfe
- Ascotainia sutepense Rolfe
- Ceratostylis siamensis Rolfe
- Cirrhopetalum siamense Rolfe
- Cirrhopetalum sutepense Rolfe
- Cymbidium kerrii Rolfe
- Cymbidium siamense Rolfe
- Cymbidium sutepense Rolfe
- Dendrobium dixonianum Rolfe
- Dendrobium indivisum var. lampangense Downie
- Dendrobium sutepense Rolfe
- Diploprora truncata Rolfe
- Eria sutepensis Rolfe
- Eria wildiana Rolfe
- Eulophia burkei Rolfe
- Eulophia siamensis Rolfe
- Geodorum siamense Rolfe
- Liparis odorata var.longiscapa Rolfe
- Liparis siamensis Rolfe
- Liparis sutepensis Rolfe
- Liparis tenuis Rolfe
- Luisia latilabris Rolfe
- Luisia siamensis Rolfe
- Microstylis carnosula Rolfe
- Microstylis siamensis Rolfe
- Microstylis sutepense Rolfe
- Microstylis tenebrosa Rolfe
- Saccolabium hoyopse Rolfe
- Saccolabium monticola Rolfe
- Saccolabium spatulatum Rolfe
- Saccolabium sutepense Rolfe
- Sarcanthus bicuspidatus Rolfe
- Sarcanthus crassifolius Rolfe
- Sarcanthus flagelliformis Rolfe
- Sarcochilus sutepensis Rolfe