The orchid Dendrobium Udom Blue Angel-bigibbum is a hybrid . This orchid hybrid lacks official registration. The name is an internal designation created within the orchidroots system.
Top three species ancestors and their influences are

• Dendrobium bigibbum (54.49%)  section: Phalaenanthe 
• Dendrobium bigibbum var. superbum (14.06%)
• Dendrobium taurinum (7.42%)  section: Spatulata