A Taxonomic Study on Lentibulariaceae of Taiwan

by Chao, Yi-Shan

Utricularia is the only genus in Lentibulariaceae of Taiwan. The morphology of Utricularia is highly diverse due to the habitats variation, which results in the difficulty to identify the species of this genus. This study emphasizes the morphology of Utricularia, and combines with the information of field observation and the cultivation, to ensure the influence of environmental change on external morphology, especially the characters of stolons, rhizoids, leaves, flowers, fruits, pollens, seeds, and traps. Further, the taxonomic value of trap glands between species is discussed. There are seven species recognized in Lentibulariaceae of Taiwan; namely, U. aurea Lour., U. australis R. Br., U. bifida L., U. caerulea L., U. gibba L., U. striatula Sm., and U. uliginosa Vahl. In addition, U. minor L. and U. inflata Walter are treated as doubtful species.