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Floral vascular anatomy of Japonolirion osense Nakai (Liliaceae) and its tribal relationship

1984; Volume: 53; Linguagem: Inglês

10.5962/p.330488

1943-6300

Frederick H. Utech,

Plant Diversity and Evolution

JaponoUrion osense, a rare, serpentine endemic of Japan known from only two general areas, has been associated in the limited literature with the tribe Hclomeac-Helonias in eastern North America, Heloniopsis in Japan and Korea, and Ypsilandra in western China.This is the first report on the floral vascular anatomy of "the lily of Japan."The pedicel to stigma vasculature of J. osense is a simple axial system with fusion dorsals and unbranched ventrals.The three septicidal carpels are loosely connected with only stigmatic tissue along their central floral axis.Each carpel terminates in a short free style.Three representative genera of the Helonieae have simple dorsals and highly branched ventrals, three fused septa, a massive basal receptacle that is fused along along the floral axis, a fusion style that is depressed into the upper ovary area, winged seeds, and they share loculicidal dehiscence.The tribal association of JaponoUrion should be with the Tofieldieae and not the Helonieae.