J Syst Evol ›› 2009, Vol. 47 ›› Issue (6): 581-598.DOI: 10.1111/j.1759-6831.2009.00056.x

• Research Articles • Previous Articles     Next Articles

Taxonomic revision of Lepisorus (J. Sm.) Ching sect. Lepisorus (Polypodiaceae) from China

1, 2Xin-Ping QI 1Xian-Chun ZHANG*   

  1. 1 (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China)
    2 (Graduate University of Chinese Academy of Sciences, Beijing 100049, China) * Author for correspondence. E-mail: .
  • Received:2009-03-22 Published:2009-11-25

Abstract: The taxonomy of Lepisorus (J. Sm.) Ching sect. Lepisorus in China was revised based on herbarium specimen examinations, field observations, and microscopic study of rhizome scales, soral paraphyses, leaf epidermis and spores. As a result nine species were recognized: Lepisorus macrosphaerus (Baker) Ching, L. asterolepis (Baker) Ching, L. marginatus Ching, L. kuchenensis (Y. C. Wu) Ching, L. megasorus(C. Chr.) Ching, L. kawakamii (Hayata) Tagawa, L. subsessilis Ching & Y. X. Lin, L. affinis Ching and L. nudus (Hook.) Ching. Lepisorus kawakamii (Hayata) Tagawa was reinstated; L. gyirongensis Ching & S. K. Wu and L. longus Ching were reduced to synonyms of L. nudus and L. affinis respectively. The subdivision of L. macrosphaerusis was not accepted. Rhizome scales and paraphyses are the most useful characters for species delimitation as well as for infrageneric classification. Characteristics of the leaf epidermis and spore ornamentation are usually stable and thus of great significance in understanding the relationships among groups within the genus.

Key words: Lepisorus, sect. Lepisorus, Polypodiaceae, Taxonomic revision, China.