TITLE Pluchea Cass. (Asteraceae: Inuleae) in Taiwan
AUTHOR Ching-I Peng
Institute of Botany, Academia Sinica, Nankang, Taipei 115, Taiwan
Chih-Huei Chen
Taiwan Endemic Species Research Institute, Chichi, Nantou 552, Taiwan
Wen-Pen Leu
Institute of Botany, Academia Sinica, Nankang, Taipei 115, Taiwan
Hsin-Fu Yen
Science Education Department, National Museum of Natural Science, Taichung 404, Taiwan
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ABSTRACT Four species of the Pluchea (Asteraceae) are recognized from Taiwan: P. carolinensis (Jacq.) G. Don, P. indica (L.) Less., P. pteropoda Hemsl., and P. sagittalis (Lam.) Cabera. Both P. indica and P. pteropoda occur in littoral habitats. The former is widespread mainly along the western coastline, and the latter is restricted to the southwestern seashore. Previous reports of P. pteropoda as a rare, alpine species in Taiwan are erroneous. In recent years P. carolinensis has abundantly naturalized in southern Taiwan. Pluchea sagittalis, a second adventive species in Taiwan, grows rampantly in the north. Both were originally native to the New World and are documented in Taiwan for the first time. A taxonomic treatment, line drawings, and a distribution map of Pluchea species in Taiwan are provided. Meiotic chromosome counts of n = 10 are reported for the naturalized P. carolinensis and n = 20 for an indigenous population of P. pteropoda and a sample collected from Cape D'Aguilar, Hong Kong.
KEYWORD Asteraceae; Chromosome number; Inuleae; Pluchea; Pluchea carolinensis; Pluchea indica; Pluchea pteropoda; Pluchea sagittalis; Taiwan; Taxonomy;
ARTICLE INFO Botanical Bulletin of Academia Sinica, Volume 39 Number 4 October 1998, page 287-297, 11 pages
PUBLISHER Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China