玉米田的雜亂無章

Persicaria capitata (Buchanan-Hamilton ex D. Don) H. Gross
(Polygonaceae), A Newly Naturalized Plant in Taiwan
Tsai-Wen Hsu, Shin-Ming Ku and Ching-I Peng

ABSTRACT: Persicaria capitata (Buchanan-Hamilton ex D. Don) H. Gross, a species of the Polygonaceae widespread in mainland China and neighboring countries, has recently naturalized at ca. 2,000 m altitude in central Taiwan. Morphologically, P. capitata resembles P. chinensis, both belonging to section Cephalophilon, but can be easily distinguished from P. chinensis by accrescent and fleshy perianth in fruit. This paper provides a description of the species, line drawings, and color photographs to aid in identification.

KEY WORDS: Naturalized plant, Persicaria capitata, Polygonaceae, Taiwan, Taxonomy.