Format: ORAL

Yu-Huan Chen1, Ting-Hsuan Huang1, Chang-Tse Lu2, Rong-Show Shen1

1 Department of Horticultural Science, National Chiayi University, Chiayi City, Taiwan 2 Department of Biological Resources, National Chiayi University, Chiayi City, Taiwan

Tricyrtis Wall. (Liliaceae) is a perennial herb, including approximately 20 species, endemic to East Asia. Tricyrtis exhibit similar morphologies; thus, some species display infraspecific morphological variation and ambiguous boundaries within species. In this study, we examined the morphological characteristics, elevation, and physiology to revise this genus in Taiwan. As a result, we confirmed five species and one variety: i.e., T. formosana Baker., T. lasiocarpa Matsumura, T. lasiocarpa var. ovatifolia (S.S. Ying) Y.H. Chen & T.H. Huang, stat. nov., T. lingyunyanensis Y.H. Chen & T.H. Huang, sp. nov., T. ravenii C.I Peng & Tiang, and T. suzukii Masamune. Tricyrtis lingyunyanensis Y.H. Chen & T.H. Huang is a new species found only in the north of Wunfong Mountain, Chiayi Country, Taiwan, at an elevation of approximately 1100 m. The unique feature is that dried capsules fall off from the base of the capsule, and bulbils develop at the nodes of the aerial stem aboveground. Furthermore, we discovered bulb formation in this genus in Taiwan and described the growth patterns of its underground parts. This study seeks to provide a detailed assessment of the morphology of each species by offering descriptions and precise comparative photographs.