Chromosome counts are made for 6 species, one forma and one variety in 8 genera of the family Orchidaceae in Japan. Preparations were made from root tips or buds by the modified squash method (Mutsuura & Nakahira, 1956). Chromosome numbers of Listera nipponica, Goodyera hachijoensis var. leuconeura, Oberonia Japonica forma major, Tipularia japonica, Liparis formosana, Phajus Tankervilliae and Bulbophyllum Makinoanum are reported for the first time, and the number of Calypso bulbosa is reconfirmed (Table 1)
