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The moss genus Hennediella is taxonomically revised. A key, descriptions, illustrations, distribution data, LM and SEM photographs of the 15 species recognized are provided. A morphometric study of 226 specimens is carried out to test the most significant characters and a multivariate analysis is made for the Hennediella heimii group to distinguish patterns of morphological differentiation. Thirty-seven names are lectotypified and two epitypes designated. Hennediella serrulata and H. angustifolia are transferred to the genus Syntrichia. Desmatodon spelaeus, Hennediella oedipodioides, Pottia chubutensis and Syntrichia astoma are synonymyzed with H. heimii, and Pottia fusco-mucronata and Hennediella acutidentata with H. antarctica. Hennediella acletoi and T. leiostomoides are synonymyzed respectively with H. denticulata and H. longirostris. The sporophyte of Hennediella bellii is described for the first time. New records for various countries of the study area are reported.
The moss genus Hennediella is taxonomically revised. A key, descriptions, illustrations, distribution data, LM and SEM photographs of the 15 species recognized are provided. A morphometric study of 226 specimens is carried out to test the most significant characters and a multivariate analysis is made for the Hennediella heimii group to distinguish patterns of morphological differentiation. Thirty-seven names are lectotypified and two epitypes designated. Hennediella serrulata and H. angustifolia are transferred to the genus Syntrichia. Desmatodon spelaeus, Hennediella oedipodioides, Pottia chubutensis and Syntrichia astoma are synonymyzed with H. heimii, and Pottia fusco-mucronata and Hennediella acutidentata with H. antarctica. Hennediella acletoi and T. leiostomoides are synonymyzed respectively with H. denticulata and H. longirostris. The sporophyte of Hennediella bellii is described for the first time. New records for various countries of the study area are reported.
With the sixth volume of 'Bryophyte locality data from the Near and Middle East' (Pottiaceae “Eucladium – Z” till Trachypodaceae ; families in alphabetical order), consequently all published data of mosses between are presented to provide ‒ in addition to volume 5 (Neckeraceae till Pottiaceae “A – Didymodon”) ‒ a complete data base and background for the whole area. Starting with the beginning of the collection activities (e.g., Forsskål 1775) it covers the whole period till the end of 2019 and is the first comprehensive catalogue for these organisms including Afghanistan, Bahrain, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Sinai Peninsula, Syria, Turkey, United Arab Emirates and Yemen (incl. Socotra). With the sixth volume, the catalogue of 'Bryophyte locality data from the Near and Middle East' allows an easy access to what is recorded and known from the different countries of the Near and Middle East.
Mosses are a major component of the vegetation in ice-free coastal regions of Antarctica. They play an important role in the colonisation of ice-free terrain, accumulation of organic matter, release of organic exudates, and also provide a food and habitat resource for invertebrates. They serve as model organisms for physiological experiments designed to elucidate problems of plant cold tolerance and survival mechanisms and for monitoring biological responses to climate change. This Flora provides the first comprehensive description, with keys, of all known species and varieties of moss in the Antarctic biome. It has involved microscopic examination of around 10,000 specimens from Antarctica and, for comparison, from other continents. All species are illustrated by detailed line drawings, alongside information about their reproductive status, ecology, and distribution. This is an invaluable resource for bryologists worldwide, as well as to Antarctic botanists and other terrestrial biologists.
Bryophytes are of great importance in their ecosystems and for human well-being. They stabilize soil crust through colonization of bare grounds and rocks; they are essential in nutrient recycling, biomass production, and carbon fixing; they control water through an effective retention mechanism; and they have economic value as peat for fuel, horticulture, oil absorption, and as sources of a wide variety of chemical compounds. Bryophytes have long been used for medicinal purposes and provide a food source for reindeer, geese, ducks, sheep, musk-ox, lemmings, and other rodents. Threats include deforestation, cultivation of forests, reclamation of land, urbanization, roads, dam-building, mining, drainage of wetlands and over-grazing. This plan reviews the situation worldwide and proposes a variety of initiatives. It is aimed at those who work with and care about nature conservation, including governmental and non-governmental organizations as well as politicians and the general interested public.
For some 50 years, Professor Asakawa and his group have focused their research on the chemical constituents of bryophytes and have found that these plants contain large numbers of secondary metabolites, such as terpenoids, acetogenins, and aromatic compounds representative of many new skeletons, which exhibit interesting biological activities. Individual terpenoids, when found as constituents of both a bryophyte and a higher plant, tend to occur in different enantiomeric forms. Professor Asakawa has covered the literature on bryophytes in two earlier volumes of Progress in the Chemistry of Organic Natural Products, namely, Volumes 42 (1982) and 65 (1995). Since the publication of the latter volume, a great deal of new information has appeared on bryophytes. One example is that known sex pheromones of algae have been discovered in two liverworts, indicating that some members of the latter taxonomic group might originate from brown algae. From information provided in this volume, it is suggested that two orders of the Marchantiophyta should be combined.