Abstract: Following the principles of dualistic classification,the pedicel posture introduced as the top grade classificatory standard in classification of Cymbidium hybridum. The ordinal grades were color of flower,the diameter of flower,the shape of labellum etc. The imported 28 Japanese cultivars were divided into two groups (vertical pedicel and pendent pedicel), five teams (red flower,orange flower,yellow flower,green flower,white flower), three types (large flower,medium flower,small flower), two forms (tapering labellum and smooth abellum). In numerical classification,41 characters of 17 cultivars were observed. The numerical values were used in clustering by UPGMA (Unweighted Pair Group Method with Arithmetic average). In this taxonomical system,the diameter were seemed as the first grade guide. And the flower color was the second. The the Cultivars Classification could provide a reasonable guidance for the introduction and exploitation of Cymbidium hybridum.

Key words: Cymbidium hybridum, Dalistic classification, Qantitative classification

CLC Number: 

• S682.31