本文描述了地衣型石耳属一新种,周鳞石耳.新种脐叶体上表面以周边皮层碎片上翘而形成的大量准鳞芽,类似于淡腹鳞石耳,但是,不同之处在于新种脐叶体下表面黑色,覆以大量同色而多分枝的假根以及具有不同的地理分布.从而呈现为地理替代现象.文中为新种提供了拉丁文特征提要、英文描述、图片与地理分布图以及新种及其相关种的检索表.
A new species of the lichen- forming genus Umbilicaria from China, U. loboperipherica sp. nov. is described. The new spccies is charactcrizcd by numerous squamose lobulcs derived from the ascending cortex on the periphery of thallus, and a black lower surface with numerous and richly branched rhizincs; it is confined to northern China. The vicarism of the new species is also discussed bricfly and a key including closcly related species is given in addition to a Latin diagnosis, English description with illustrations.