Contributions to a revision of the orchid flora of Cambodia, Laos and Vietnam : a preliminary enumeration of all orchids hitherto recorded /

by Seidenfaden, Gunnar.
Published 1975

The orchids of Thailand A preliminary list

by Seidenfaden Gunnar.

The genus Oberonia in mainland Asia /

by Seidenfaden, Gunnar.
Published 1968

The orchids of Peninsular Malaysia and Singapore /

by Seidenfaden, Gunnar.
Published 1992

The genus Oberonia in Mainland Asia /

by Seidenfaden, Gunnar, 1908
Published 1968

A field guide to the wild orchids of Thailand /

by Nantiya Vaddhanaphuti.
Published 2005