Asexual reproduction by leaf fragmentation in Mnium stellare Hedw.

摘要

Cheilolejeunea intertexta (Lindenb.) Steph. is a paleotropical species occurring in Africa and Asia, including East and Southeast Asia. According to many authors, the distinguishing characteristics of this species are: (1) orbicular leaf lobe with rounded and flat apex; (2) small, unicellular apical tooth (second tooth); (3) the presence of flagelliform branches; (4) innovation of the pycnolejeuneoid-type (Mizutani, 1979); (5) thin-walled leaf cells without distinct trigones (Zhu et al., 2002); (6) autoicous or paroicous condition (Zhu et al., 2002). Although most of these characteristics are shared by other species, one of them is remarkable and shared with the neotropical Cheilolejeunea compacta (Steph.) E. Reiner: the paroicous and autoicous conditions.