Abstract
The genus Herbertus was established by Gray (1821) in his Natural Arrangement of British Plants . Many bryologists considered genus Herbertus Gray as one of the most primitive genera of the Liverworts (Grolle 1983, Schuster 1979, 1984, 2000). Species of Herbertus shows great plasticity in their size, colour, leaves bifidness and sinus width (Van Reenen 1982, Inoue 1977). Due to this great plasticity and variability, numerous species have been added in the genus especially by Stephani (1895, 1898-1924). The first Asiatic revision on genus Herbertus Gray was worked out by Juslen (2006) where 13 species from the Asiatic region were validly described. The first Asiatic Herbertus species was Sendtnera dicrana Taylor [=H. dicranus (Taylor ex Gottsche et al.) Trevis.] which has been described from Nepal. Many workers like Muller (1965), Juslen (2004, 2006a, 2006b), Gao & Cao (2000), Hattori (1966, 1971, 1975), Inoue (1977, 1981), Puppo (1984), Long & Grolle (1990), Long (1979), Zhu & So (1996), So (2003), Zhu et al. (1998), Iwatsuki (2001), Iwatsuki & Mizutani (1983), have worked on Asia and its neighbouring continents. In India, the genus Herbertus had been worked out by many workers like Montagne (1842), Stephani (1898-1924), Herzog (1939), Muller (1965, 1968), Bapna & Kachroo (2000), Dey et al. (2009), Dandotiya et al., 2011. Singh & Nath (2007) have reported 5 species from the state of Meghalaya, North East India region. So far, there is no previous record of the occurrence of the genus Herbertus from the state of Nagaland. Therefore, the present ISSN: 2319-7706 Volume 3 Number 3 (2014) pp. 187-195 http://www.ijcmas.com
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