Synonymy and notes on the occurrence of Cheilolejeunea intertexta (Lindenb.) Steph. (Lejeuneaceae, Marchantiophyta) in Neotropics

摘要

Cheilolejeunea intertexta (Lindenb.) Steph. is a paleotropical species occurringin 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 sharedby other species, one of them is remarkable and shared with the neotropical Cheilolejeunea compacta (Steph.) E.Reiner: the paroicous and autoicous conditions.Cheilolejeunea compacta was described by Stephani (1914) as Hygrolejeunea compacta and transferred by Reiner-Drehwald (2006) to Cheilolejeunea. Previously, this species was only known from Trinidad; however, Blockoel et al. (2009) reported its occurrencein the State of Bahia, Northeastern Brazil. The various populations of C. compacta from Brazil (datanot published) demonstrated that this species may present both the paroicous and autoicous conditions, with the paroicous plants being more common, as reported by Reiner-Drehwald (2006). Zhu & So (1999) pointed out that paroicous plants of C. intertextaare very common, but autoicous plants can also be found, although Mizutani (1982) has not reported paroicous condition for this species. These authors have also reported that this species is very similar to C. paroica Mizut, known from Borneo and Sulawesi (Mizutani, 1979). The same can be said for C. compacta, resulting in erroneous records of C. paroica for the neotropicsby Bastos & Yano (2005), which was corrected by Bastos (2009). Mizutani (1979) pointed out that C. paroica has papillose cells dorsally. This condition is absent in C. intertextaand C. compacta.