Action semantics in retrospect

This paper is a themed account of the action semantics project, which Peter Mosses has led since the 1980s. It explains his motivations for developing action semantics, the inspirations behind its design, and the foundations of action semantics based on unified algebras. It goes on to outline some applications of action semantics to describe real programming languages, and some efforts to implement programming languages using action semantics directed compiler generation. It concludes by outlining more recent developments and reflecting on the success of the action semantics project

Check list of the bryophytes of Réunion Island (France)

A systematic, literature-based compilation of bryophytes of Réunion Island has been made, with the additional examination of herbarium specimens. The list of 148 genera and 404 species and infraspecific taxa of mosses and 87 genera and 241 species and infraspecific taxa of hepatics and hornworts are here reported, including four mosses reported as new to Réunion

Notes on Seychelles mosses : 5., mosses of Frégate Island

In May 1997, the first collections of bryophytes were made on Frégate island, Seychelles. A list of collections is provided. Fissidens sciophyllus is recorded for the first time from the Seychelles

Bryophytes of Uganda : 6., new and additional records, 3.

12 hepatics and 32 mosses are reported new to Uganda, 1 moss being also new to Africa, and 1 liverwort new to mainland Africa. Ectropothecium plumigerum (Broth.) Hedenäs is a new combination (basionym: Isopterygium plumigerum Broth.) with a new synonym Taxicaulis plumirameus Müll.Hal. nom. nud., and Taxiphyllum maniae (Renauld & Paris) M. Fleisch. is a new synonym of Taxiphyllum taxirameum (Mitt.) M.Fleisch. Three mosses are removed from the Uganda list

New and biogeographically noteworthy records of Philippine mosses from Mindanao Island

Sixteen new records of Philippine mosses, namely, Acroporium ramicola, Atractylocarpus comosus, Campylopus flagelliferus, Ectropothecium ptychofolium, Fissidens guangdongensis, Garovaglia bauerlenii, Holomitrium stenobasis, Hypnodendron auricomum, Leucobryum boninense, Macromitrium archboldii, Meiotheciella papillosa, Neolindbergia cladomnioides, Rhynchostegiella vriesei, Schlotheimia emarginato-pilosa, Symphysodontella parvifolia and Trichosteleum singapurense are reported. Atractylocarpus and Meiotheciella are two new generic records for the country. Additional Mindanao records of five uncommon mosses in the Philippines, i.e., Claopodium assurgens, Cryptogonium phyllogonioides, Erpodium biseriatum, Meiothecium bogoriense fo tenuissima and Papillaria leuconeura, are also reported

Flag-based big-step semantics

Structural operational semantic specifications come in different styles: small-step and big-step. A problem with the big-step style is that specifying divergence and abrupt termination gives rise to annoying duplication. We present a novel approach to representing divergence and abrupt termination in big-step semantics using status flags. This avoids the duplication problem, and uses fewer rules and premises for representing divergence than previous approaches in the literature

Water extract of Cryphaea heteromalla (Hedw.) D. Mohr bryophyte as a natural powerful source of biologically active compounds

Bryophytes comprise of the mosses, liverworts, and hornworts. Cryphaea heteromalla, (Hedw.) D. Mohr, is a non-vascular lower plant belonging to mosses group. To the date, the most chemically characterized species belong to the liverworts, while only 3.2% and 8.8% of the species belonging to the mosses and hornworts, respectively, have been investigated. In this work, we present Folin–Ciocalteu and oxygen radical absorbance capacity (ORAC) data related to crude extracts of C. heteromalla obtained by three different extraction solvents: pure water (WT), methanol:water (80:20 v/v) (MET), and ethanol:water (80:20 v/v) (ETH). The water extract proved to be the best solvent showing the highest content of biophenols and the highest ORAC value. The C. heteromalla-WT extract was investigated by HPLC-TOF/MS (High Performance Liquid Chromatography-Time of Flight/Mass Spectrometry) allowing for the detection of 14 compounds, five of which were phenolic compounds, derivatives of benzoic, caffeic, and coumaric acids. Moreover, the C. heteromalla WT extract showed a protective effect against reactive oxygen species (ROS) generation induced by tert-butyl hydroperoxide (TBH) on the murine NIH-3T3 fibroblast cell line

Bryophytes on fungi

Sixty one species of bryophytes (26 mosses, 35 liverworts) have been found growing on fungi basidiomata in Brazil

Mosses from the Mascarenes - 5

A list of Pottiaceae specimens is presented. Trichostomum bombayense C.Müll. is transferred to the genus Pseudosymblepharis Broth., and a new combination is made: Pseudosymblepharis bombayensis (C.Müll.) P. Sollman. Five new synonyms are proposed. Gametophyte characters, separating non-fruiting material of Pseudosymblepharis bombayensis from Trichostomum tenuirostre (Hook. & Tayl.) Lindb., are listed

Manual of tropical bryology

Bryophytes belong to the oldest land plants. They existed already in the Palaeozoic 300 mio years ago in forms which were hardly different from the extant species. They remained relatively unchanged with relatively low evolution rates (and are thus often called a „conservative“ plant group), but could successfully establish themselves in an always varying environment from Devonian swamps to Permian forests, Mesozoic deserts and as epiphytes in Tertiary rainforests. They are not eaten by snails or insects, and are resistant against fungi and bacteria