Abstract

The genus Nymphoides Séguier (Menyanthaceae) in Taiwan is revised based on comparative morphological, palynological, and cytological studies. Five native taxa, N. aurantiaca (Dalzell) O. Kuntze, N. coreana (H. Léveillé) H. Hara, N. hydrophylla (Lour.) O. Kuntze, N. indica (L.) O. Kuntze, and N. lungtanensis S. P. Li, T. H. Hsieh & C. C. Lin, sp. nov., and a cultivated species N. peltata (Gmelin) O. Kuntze are recognized in this paper. The ornamentation of seed coat and chromosome number are good characters in separating the Taiwanese taxa. SEM micrographs of pollen grains and seed coat, chromosome number, a key to species, descriptions, and taxonomic notes are provided.

中文摘要

根據外部形態、花粉、種子和細胞學來訂正台灣莕菜屬(Nymphoides)植物。本研究指出台灣有5個分類群，分別為黃花莕菜(N. aurantiaca (Dalzell) O. Kuntze)、小莕菜(N. coreana (H. Léveillé) H. Hara)、龍骨瓣莕菜(N. hydrophylla (Lour.) O. Kuntze)、印度莕菜 (N. indica (L.) O. Kuntze)、龍潭莕菜(N. lungtanensis S. P. Li, T. H. Hsieh & C. C. Lin, sp. nov.)和一個栽培種荇菜(N. peltata (Gmelin) O. Kuntze)。本文並提供花粉、種子、檢索表、分類群描述等資料。

Keyword: Nymphoides, Menyanthaceae, Seed, Pollen grain, Chromosome number, Revision, Taiwan.