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Chromosome numbers with information on meiotic behaviour are recorded for the first time for the following taxa in the family Orthotrichaceae from Papua New Guinea - Desmotheca apiculata (Dozy & Molk.) Lindb. ex Card. n=6; Macromitrium incurvifolium (Hook. & Grev.) Schwaegr. n=9, M. longicaule C. Muell. n=6 (5+X/y), M. orthostichum Nees ex Schwaegr. n=7 (6+ X/y), M. salakanum C. Muell. n=9, M. similirete Bartr. n=9. M. streimannii Vitt n=9 (8+m); Schlotheimia emarginato-pilosa Herz. n=9 and S. macgregorii Broth. & Geh. n=11.
No bryophyte conservation programs are in place in Australia as the knowledge of bryophytes is poor, especially of their habitat preferences and distribution. The conservation of species against habitats is discussed and it is maintained on present evidence that areas conserved for vascular plants and/or animal habitats, as national parks and forest reserves, in most cases would adequately conserve bryophytes.
During a joint field trip organised by H. Streimann in 1999, the authors collected large amount of bryophytes in Queensland, New South Wales, and Victoria states and in the Austral Capital Territory (A.C.T.). Some of them proved to be new state records, or new records for Australia. The list below is the first selection of these records in Hepaticae, with 16 species newly reported from the whole continent.