Revision of Rubus (Rosaceae) in Taiwan

Taiwania

Juinn-Yih Huang¹  Jer-Ming Hu¹ 

[1] Institute of Ecology and Evolutionary Biology, National Taiwan University, 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan.;

关键词: Rubus;    Rosaceae;    revision;    hybrid;    natural hybridization;    Taiwan;    taxonomy.;   

DOI  :  10.6165/tai.2009.54(4).285

来源: DOAJ

【 摘 要 】

The genus Rubus L. in Taiwan is taxonomically revised based on morphological and phytogeographical patterns. Forty taxa (34 species, 3 varieties, and 3 hybrids) of the genus are recognized, including two new hybrid species R. croceacanthus × corchorifolius and R. rosifolius × fraxinifolius. Among the Rubus taxa in Taiwan, R. croceacanthus H. Lév. exhibits tremendous variation and we do believe that more investigations are needed in the future. Several taxa described in the Flora of Taiwan, 2nd ed. are treated as synonyms of other species, and several taxa in Taiwan are revised. The existence of R. howii Merr. & Chun, R. linearifoliolus Hayata, and R. parvifraxinifolius Hayata in Taiwan are reconfirmed, we described R. howii fruit information which was absent in original literature; and the third taxon is treated as a natural hydrid R. × parvifraxinifolius Hayata which putatively derived from R. rosifolius Sm. and R. linearifoliolus based on intermediate morphology and the scarcity of fruit set. Rubus pseudoacer Makino ssp. flexuosus (Y.-C. Liu & F.-Y. Lu) H. Ohashi & C.-F. Hsieh is treated as synonym of R. pseudoacer Makino and is excluded in Taiwan. A key to the taxa, synonyms and taxonomic descriptions of each taxon are presented. Moreover, information about phenology, chromosome number, distribution and specimens examined for each taxon are also provided.

【 授权许可】

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