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The morphological taxonomy on genus Gracilaria (Gracilariaceae, Rhodophyta) from the east coast of Guangdong province in China
Received date: 2013-09-23
Revised date: 2013-12-13
Online published: 2014-08-11
The authors surveyed the macroalgal natural resources more than 20 times during 2011~2013, and collected a number of specimens. Based on the morphological characteristics, a taxonomical study on specimens was carried out. Among the identified specimens, there were five species of genus Gracilaria including a variant, G. blodgettii Harvey, G. bailinae Chang et Xia, G. tenuistipitata Chang et Xia, G. tenuistipitata var. liui Zhang et Xia and G. longirostris Zhang and Wang. Their main features include the branches and branchlets abruptly constricted at the base for G. blodgettii, dark green plants with alternate or dichotomous first-order branches for G. bailinae, slender base and simple branches for G. tenuistipitata, slender thalli and abundant branches for G. tenuistipitata var. liui, and cystocarp with distinctly long rostrate protuberance for G. longirostris. G. blodgettii and G. bailinae are two new records in the east coast of Guangdong province in China. The results enrich the diversity of Gracilaria species and provide the essential data for the protection and utilization of the resources of Gracilaria species in eastern Guangdong.
Key words： East coast of Guangdong province; Species; Morphology; Distribution
DING Lan-ping , TAN Hua-qiang , SUN Guo-dong , LIANG Bing-bing , HUANG Bing-xin . The morphological taxonomy on genus Gracilaria (Gracilariaceae, Rhodophyta) from the east coast of Guangdong province in China[J]. Journal of Tropical Oceanography, 2014 , 33(4) : 33 -39 . DOI: 10.11978/j.issn.1009-5470.2014.04.004
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