The JapaneseSociety for Plant Systematics ISSN1346-756S Acta Phytotax. Gcobot. 59 (3):183-193 (2008) Two Species ofEntada inJapan asEvidenced by cpDNA Phylogeny NORIHISA WAKITAi, YOICHI TATEISHI2, TETSUO OHI-TOMA3, JIN MURATA3 and TADASHI KAJITAi' JDEzpartment ofBiology Graduate Sbhool ofScience, eniba U)iiversity 1-33 }21yoi-cho, inage-ku, (:hiba 263-8522, Jdpan. *tkciji@bculcychiba-u,ip (Ziuthorfor correspondencel,' ?DE:partment qf'Scienee Education, haculty of Education, Uhivensity ofthe

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... hivensity ofthe Ryukvus, Okinawa 903-O129, Jinpan; 3Botanical Gatdlens, Graduate School ofScience, 711ie University of7lolyo 112-OOOL .lapan The phylogenetic relationships ef Entadu (Fabaceae) were examined to determine if two distinct species occur in Japan. Nucleotide sequences of the trnK/ and trnL introns and the intergenic spacer of trnL-trnF of cpDNA resolved 19 haplotypes among 39 widely collected samples of E. phaseoloicies-1ike plants, In the resultant tree, two distinct clades corresponded to two groups alse distinguished by diagnostic seed characters. The clades agree with the expected chorology of samples and with the diagnostic morphology from previous taxonomic work. One clade corresponds to Entacla phaseoloides and the other to E. tonkinensis. A distinctive concentration of haplotypes was observed. Although seeds of Entadu phaseoioides are renowned as sea drift seeds, our results do not suggest frequent gene flow caused by long distance seed dispersal,