Phytologia (April 2011) 93(1) 118 SYSTEMATICS OF JUNIPERUS CHINENSIS AND J. TSUKUSIENSIS FROM JAPAN AND TAIWAN: DNA SEQUENCING AND TERPENOIDS. Robert P. Adams Biology Department, Baylor University, Box 97388, Waco, TX 76798, USA, Robert_Adams@baylor.edu Chang-Fu Hsieh Institute of Ecology and Evolutionary Biology, National Taiwan University Taipei 106, Taiwan Jin Murata Botanical Gardens, Koishikawa, Graduate School of Science, The University of Tokyo, 3-7-1 Hakusan, Bunkyo-ku, Tokyo 112-0001, Japan and Andrea E. Schwarzbach Department of Biological Sciences, University of Texas at Brownsville, Brownsville, TX 78520, USA. ABSTRACT Analyses of nrDNA, petN-psbM, trnD-trnT and trnS-trnG revealed that Juniperus chinensis var. tsukusiensis and J. c. var. taiwanensis are not conspecific with J. chinensis. In addition, analyses of the leaf oils (terpenoids) also revealed numerous differences. Based on these new data, J. c. var. tsukusiensis is recognized as J. tsukusiensis Masam. and J. c. var. taiwanensis as J. tsukusiensis var. taiwanensis (R. P. Adams and C-F. Hsieh) R. P. Adams, comb. nov. Phytologia 93(1): 118-131 (April 1, 2011). KEY WORDS: Juniperus chinensis, J. tsukusiensis, J. tsukusiensis var. taiwanensis, J. jarkendensis, DNA, terpenoids, systematics.