| Summary: | 碩士 === 國立中山大學 === 生命科學研究所 === 85 === Morphological variations in Taiwan Polygonum L. s. l. were analyzed. All characters selected from leaves, trichomes, inflorescences, flowers, and pollens are useful in differentiating species, and are also valuable in classifying genera and sections. There are 37 species and 2 varieties of Polygonum L. s. l. found in Taiwan, and 5 genera are recognized: Polygonum L. s. s. , Fallopia Adans, Keonigia L. , Fagopyrum Mill. , and Persicaria (L.) Mill. . Fallopia Adans is divided in two sections, sect. Pleuropterus (Turcz.) Haraldson and sect. Reynoutria (Houtt.) Ronse Deer. . There are four sections in Persicaria (L.) Mill. : sect. Echinocaulon (Meisn.) Gross, sect. Tovara (Adans.) Gross, sect. Cephalophilon (Meisn.) Gross and sect. Persicaria (Mill.) Gross. New combinations include Fallopia multiflora Thunb. var. hypoleuca (Ohwi) Kuo, Persicaria micrantha (Meisn.) Kuo, Persicaria chinensis var. auriculatis (Suzuki) Kuo, and Persicaria pilushanensis (Liu et Ou) Kuo.
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