A new record of Pottiaceae from Mongolia：Weissia exserta(Broth.) P.C. Chen.
WUJISIGULENG1， TSEGMED Tsogiin2， ENKHJARGAL Enkhtaivan2， BAI Xueliang1， ZHAO Dongping1
1.Key Laboratory of Herbage and Endemic Crop Biotechnology， School of Life Sciences， Inner Mongolia University， Hohhot 010070， China；2.Institute of General and Experimental Biology， Mongolian Academy of Sciences， Ulaanbaatar 13330， Mongolia
Abstract：The rare moss Weissia exserta(Broth.) P.C. Chen.， formerly known from China and Japan，is reported form Khentei Mountains of Mongolia. Distinctive features of this Weissia species are the exserted seta， the oblong-elliptic and cleistocarpous capsules，the presence of annulus， the absence of peristome teeth， and the weakly differentiated operculum. Description， illustration， distribution data and discussion are provided.
2020, Vol. 54 
