By Bernard Goffinet, A. Jonathan Shaw
Bryophyte Biology presents an intensive assessment of the hornworts, liverworts, and mosses; varied teams of land vegetation that occupy an outstanding number of habitats in the course of the international. This re-creation covers crucial elements of bryophyte biology, from morphology, physiological ecology and conservation, to speciation, and genomics. Revised classifications comprise contributions from fresh phylogenetic reports. Six new chapters supplement totally up to date chapters from the unique e-book to supply a totally updated source. New chapters specialise in the contributions of Physcomitrella to plant genomic study, inhabitants ecology of bryophytes, mechanisms of drought tolerance, a phylogenomic standpoint on land plant evolution, and difficulties and growth of bryophyte speciation and conservation. Written by way of leaders within the box, this booklet deals an authoritative therapy of bryophyte biology, with wealthy quotation of the present literature, appropriate for complicated scholars and researchers.
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Ex Lindenb. , Ricciocarpos Corda Wiesnerellaceae Inoue: Wiesnerella Schiffn. : Targionia L. 1 Morphology and classification of the Marchantiophyta Monocleaceae A. B. Frank: Monoclea Hook. Dumortieraceae D. G. -Stotl.
G. g. the Aytoniaceae, dehiscence involves an apical operculum. In the Ricciaceae, the capsule wall actually deteriorates before the spores are mature, leaving them in a cavity lined by the calyptra; spore dispersal in this group requires thallus degeneration. An almost universal feature of liverwort sporophytes is the presence of elaters in the capsule (Fig. 8C). The elaters are always unicellular and dead at 29 30 B. Crandall-Stotler and others maturity, and are usually thin and elongate with spiral thickening bands in their walls.
In developing capsules, however, these sterile cells may serve as a dispersed tapetum (Crandall-Stotler 1984). Bartholomew-Began (1991) has shown that the immature elaters of Haplomitrium contain lipids and starch bodies, both of which disappear as elater thickenings are deposited. At the same time, the capsule lumen itself also contains numerous lipid droplets (Crandall-Stotler 1984). A similar nutritive function has often been postulated for the nurse cells of the Sphaerocarpales (Parihar 1961).