In Vietnam the genus Euodia (Rutaceae) includes 6 species, as follows: Euodia crassifolia Merr., Euodia calophylla Guillaum., Euodia lepta (Spreng.) Merr., Euodia oreophila Guillaum., Euodia pasteuriana A. Chev. ex Guillaum., and Euodia simplicifolia Ridley. Based on characters of leaves and flowers we have differentiated all species. E. oreophila is different from E. lepta by characters of veins and calyx. E. crassifolia is different from E. simplifolia by characters of veins and number of leaflets. E. calophylla is different from E. crassifolia, E. simplifolia & E. pasteriana by inflorescence characters. Euodia is closely related to Tetradium by having opposite leaves and capsular fruits but Euodia is different from Tetradium in the number of leaflets.
Bui Thu Ha
Ha Noi Pedagogy University
(Proceedings of 3rd National Scientific Conference on Ecology and Biological Resources, Hanoi 22th October 2009 - IEBR)