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本文报道广州郊区寄生于象草Ｐｅｎｎｉｓｅｔｕｍｐｕｒｐｕｒｅｕｍ根部的七种垫刃目Ｔｙｌｅｎｃｈｉｄａ线虫：肾形肾脏线虫Ｒｏｔｙｌｅｎｃｈｕｌｕｓｒｅｎｉｆｏｒｍｉｓ；华丽矮化线虫Ｔｙｌｅｎｃｈｏｒｈｙｎｃｈｕｓｅｌｅｇａｎｓ；尤因矮化线虫Ｔ．ｅｗｉｎｇｉ；裸露矮化线虫Ｔ．ｎｕｄｕｓ；短根腐线虫Ｐｒａｔｙｌｅｎｃｈｕｓｂｒａｃｈｙｕｒｕｓ；无边缘根腐线虫Ｐ．ｅｍａｒｇｉｎａｔｕｓ；玉米根腐线虫Ｐ．ｚｅａｅ．分别记述它们的形态测量数据、鉴定特征、生物学特性及其密度．华丽矮化线虫Ｔ．ｅｌｅｇａｎｓ和无边缘根腐线虫Ｐ．ｅｍａｒｇｉｎａｔｕｓ为中国新记录．象草Ｐ．ｐｕｒｐｕｒｅｕｍ为上述种类的寄主新记录．
In this paper, we report seven species of Tylenchida nematodes parasitized on the roots of Pennisetum pulmonum in Guangzhou suburbs: Rotylenchulus reniformis; Tylenchorhynchuselegans; ewingi; dwarf nematode B nudus; Nematode Pratylenchusbrachyurus; emarginatus; corn root rot nematode P. zeae. Respectively describe their morphometric data, characterization, biological characteristics and their densities. Gorgeous dwarf nematode T. elegans and edgeless nematode P. emarginatus is a new record for China. Grassy P. Purpureum is a new record of hosts for these species.