Keywords: LECIDEA/ SYSTEMATICS/ CHEMISTRY
Abstract: 6 tab.
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ ACAROSPORA HEUFLERIANA/ RHIZOCARPIC/ NORSTICTIC
Abstract: ["... rhizocarpic acid in the cortex and norstictic acid in the medulla."--English summary.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: TRAPELIA/ LECIDEA/ PLACOPSIS/ NEW TAXA/ LECIDELLA
Abstract: 2 tab. [New: Lecidella achristotera (Nyl.) comb. nov., L. endolithea (Lynge) comb. nov., L. flavisorediata (Vezda) comb. nov., L. incongruella (Vain.) comb. nov., L. laceola (Nyl.) comb. nov., L. scabra (Tayl.) comb. nov., L. spitsbergensis (Lynge) comb. nov., L. stigmatea (Ach.) comb. nov., L. subincongrua (Nyl.) comb. nov., with var. elaeochromoides (Nyl.) comb. nov., L. viridans var. chodati (Samp.) comb. nov.]
[Edit/Delete] [Upload PDF/URL]
Keywords: PERTUSARIA HYMENEA/ CHEMISTRY
Abstract: Seventy-seven specimens of some species of the genus Pertusaria have been studied by chromatographic and partly also mass spectrometric analyses. P. cyparissi, P. hymenea, P. lecanorodes, P. flavicans, P. flavida, P. rupicola and probably also P. ficorum and P. maximiliana contain the xanthone flavicanon, that causes the yellow colour of the thalli; in P. flavicans, P. rupicola and partly P. flavida and probably also P. ficorum and P. maximiliana the occurrence of the depsidone stictic acid has been shown additionally. The mentioned species are restricted to the mediterranean area respectively have extended from there to Western and Central Europe, the sorediate ones widest to the north-east respectively to the alpine zone. It is discussed, whether in spite of their differences in the structure of the apothecial verrucae, these species represent a systematic unit. The substances may be used partly to characterize the species. P. coronata is distinguished chemically from P. coccodes, to which it is placed recently, by an unidentified substance orange fluorescing in ultra-violet light, and further by stictic acid instead of norstictic acid. Both the species are not related to P. hymenea. The distribution of the species of the P. hymenea group in Europe has been mapped out roughly. 1 pl. 2 tab. [8 species.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: LECIDEA/ CHEMISTRY/ SYSTEMATICS
Abstract: 8 tab.
[Edit/Delete] [Upload PDF/URL]
Keywords: PERTUSARIACEAE/ CHEMISTRY
Abstract: 1 tab. [5 species.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CLADONIA CONISTEA/ EUROPE/ DISTRIBUTION
Abstract: Cladonia conistea (Del.) Asah. is reported for Central Europe for the first time.
[Edit/Delete]
[Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ CHEMISTRY/ PERTUSARIA
Abstract: 4 tab. [English summary.]
[Edit/Delete] [Upload PDF/URL]
Abstract: Fifty-two specimens of 8 species of the genus Buellia which contain xanthones have been studied by means of lichen mass spectrometry, thin layer chromatography, paper chromatography and partly chromatogram spectral photometry. The chemical composition of B. concinna, B. geophila, B. vernicoma has been studied for the first time. In all specimens several related xanthones have been found which differ in degree of O-methylation and chlorination respectively; in most cases the xanthones with three Cl substitutes are the main compounds. - For the main compound of B. granulosa (of the 6-O-methyltrichlornorlichexanthone type) the name granulosin is proposed. The taxonomical significance of the detected xanthones has been discussed. The species B. anisomera and B. granulosa - which show transitory forms - are distinctly separated by means of different xanthones.
[E-mail correction]
[Upload PDF/URL]
Keywords: PARMELIA/ EUROPE/ CHEMOTAXONOMY/ PARMELIACEAE
Abstract: 20 fig. 2 tab.
[Edit/Delete] [Upload PDF/URL]
Keywords: NEW TAXA/ LECANORA/ PLACODIUM/ LECANORACEAE
Abstract: Lecanora (Plac.) sphalera from Jugoslavia is described as new. It is morphologically nearly identical with the associated Lecanora admontensis. Instead of Usnic acid it contains some xanthones as pigment, chemically very different compounds. The significance of this compensation of compounds is discussed. - The distribution of both Lecanora admontensis and L. sphalera is mapped. 1 figure. [New: Lecanora sphalera sp. nov.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: RHIZOPLACA/ EUROPE/ ASIA/ LECANORACEAE/ NEW TAXA
Abstract: 15 figures. 13 maps. [3 species. New: Rhizoplaca melanophthalma (Ram.) Leuckert & Poelt comb. nov. with var. obscura (J. Stein.) Leuckert & Poelt comb. nov., R. peltata (Ram.) Leuckert & Poelt comb. nov.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ LECANORA/ LECANORACEAE
[Edit/Delete]
[Upload PDF/URL]
Keywords: ACAROSPORA/ CHEMISTRY/ XANTHOTHALLIA/ NEW TAXA/ TLC/ MASS SPECTROMETRY
Abstract: 1 table. 2 figures. [Analysis of 10 species by TLC and mass spectrometry. New: Acarospora sulphurata var. rubescens Buschardt var. nov. Two chemical strains of A. chrysocardia also discovered.]
[Edit/Delete] [Upload PDF/URL]
Keywords: BUELLIA/ CHEMISTRY/ XANTHONES/ PHYSCIACEAE
Abstract: 2 figures.
[Edit/Delete] [Upload PDF/URL]
Keywords: RHIZOCARPON/ ALPS/ NEW TAXA/ PARASITE/ LECANORA/ EUROPE
Abstract: 6 figures. [New: Rhizocarpon dinothetes sp. nov. The new species belongs to the R. viridiatrum group.]
[Edit/Delete]
[Upload PDF/URL]
[ET: 596]
Keywords: CHEMISTRY/ ICMADOPHILA/ PARMELIA/ EUROPE
Abstract: [Detailed studies of the chemistry of Icmadophila ericetorum and Parmelia stygia from Europe.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: CHEMISTRY/ RINODINA/ RINODINELLA/ XANTHONE/ SOUTH AMERICA/ SAXICOLOUS
Abstract: [Chemical analyses of 20 species of primarily saxicolous species of Rinodina and Rinodinella are reported. "For the first time a compound of a xanthone-type was detected in the genus Rinodina: an O-methyldiclhloronorlichexanthone in Rinodina cf. lepida from South America."]
[Edit/Delete]
[Upload PDF/URL]
Keywords: CLADONIA/ CHEMISTRY/ LECANORA/ EUROPE
Abstract: [Study of two chemical strains of Cladonia uncialis in Europe, and four chemical strains of Lecanora gracea.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: ITALY/ TIROL/ DIMELAENA/ CHEMOTYPES/ ALTITUDE/ SAXICOLOUS/ EUROPE
Abstract: 3 tables. 1 figure. [Study of an altitudinal transect from 700 to 2700 meters showed presence of all four chemotypes at lower elevations, but only two types at higher elevations. "In the lower parts the greater number of chemotypes is correlated with more diverse types of biotypes. The decrease of the number of chemotypes from lower to higher regions may be compared with its decrease from south to north in Europe--which is an expression of the so-called north-south gradient."]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ HAEMATOMMA/ EUROPE/ SWEDEN/ NORWAY/ CHEMOTYPES
Abstract: 2 maps. 3 figures. 1 table. [Study of specimens from central Europe, Norway and Sweden revealed 5 chemotypes with various combinations of usnic, divaricatic, hypothamnolic, thamnolic, and psoromic acids. Other accessory substances were also detected. Barbatic acid and zeorin were not found in any of the specimens.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: BERLIN/ GERMANY
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMICAL ANALYSIS/ OWN/ REVIEW/ MASS SPECTROMETRY/ CHROMATOGRAM SPECTRAL PHOTOMETRY
Abstract: 3 tables. 10 figures. [A critical examination of the chemical analysis techniques routinely used in lichenology. Mass spectra peaks for 120 substances are reported and the usefulness of chromatogram spectral photometry is discussed.]
[Edit/Delete] [Upload PDF/URL] [ET: 2197]
Keywords: RINODINA/ OWN/ SUBSTANCES/ THIOMELINE
Abstract: 2 tables. [A chemical survey of 20 specimens of 13 species in Rinodina is reported. Authors report a new pigment named thiomeline from R. thiomela and R. lepida.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: LECANORA/ APOTHECIA/ OWN/ NORWAY/ EUROPE
Abstract: 5 figures. [First reports of fertile material of Lecanora cavicola from Central Europe. Chemically the species produces atranorin and alectorialic acid. Authors believe it should remain in the genus Lecanora although the species holds an isolated position.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: OCHROLECHIA/ CHEMISTRY/ EUROPE
Abstract: 2 tables. [Study of 600 specimens tested by TLC and other chemical techniques. Sixteen species are recognized; "... the information presented by Verseghy (1962) and Howard (1970) has been corrected and expanded as far as possible."]
[Edit/Delete] [Upload PDF/URL] [ET: 500]
Keywords: CHEMOTAXONOMY/ REVIEW/ CHEMOSYNDROMES/ TAXONOMY
Abstract: 2 figures. [Discussion of chemical characteristics in lichen systematics, especially chemosyndromic variation (simple and complex types). In German; English summary.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ SULPHURELLIN/ LECANORA/ DIMELAENA
Abstract: 3 figures. [Sulphurellin, a depside known previously from Lecanora sulphurella, has been discovered in Dimelaena australiensis.]
[Edit/Delete]
[Upload PDF/URL]
[ET: 897]
Keywords: RINODINA/ CHEMISTRY/ TLC/ CONFLUENTIC/ 2'-O-METHYLPERLATOLIC
Abstract: 1 table. [Analysis of 52 specimens of 26 species by TLC. "Confluentic acid and 2'-O-methylperlatolic acid were found as new for the genus. Two chemical strains were found in Rinodina subglaucescens."]
[Edit/Delete]
[Upload PDF/URL]
[ET: 995]
Keywords: GREENLAND/ DIMELAENA/ CHEMISTRY
Abstract: 2 figures. 1 table. [Authors found only Chemotypes 0 and II in 45 samples. Chemotype 0 may be better adapted to severe climatic conditions. "This fact corresponds to the known rule, proven above all for Europe, according to which "0-types" (that is types without colourless medulla substances) dominate in the northern areas."]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ GREENLAND/ DIMELAENA/ SYSTEMATICS/ TLC/ CHEMOTYPES
Abstract: 1 table. 2 figures. [Study of 45 samples using TLC showed two chemotypes 0 (only usnic acid) and II (usnic acid and gyrophoric acid with lecanoric acid; without ovoic acid). "The distribution of the chemotypes shows the tendency of chemotype 0 -- in comparison to chemotype II -- being adapted to more severe climatic conditions." The same pattern is found in northern Europe.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ LEPRARIA/ LEPROCAULON/ PANNARIC
Abstract: 5 figures. ["The structure of pannaric acid 6-methylester was assigned to the major compound of Lepraria spec. from the Lepraria membranacea group; besides, a trace of pannaric acid as well as traces of unidentified phenolic compounds and atranorin (+) could be found in the species."]
[Edit/Delete]
[Upload PDF/URL]
Keywords: LECANORA RUPICOLA/ EUROPE/ CHEMISTRY/ NEW TAXA/ KEY
Abstract: 8 maps. 4 tables. 3 figures. [Treatment of four saxicolous species and subspecific taxa; key. Several chemotypes are demonstrated. New: Lecanora bicincta Ramond var. sorediata (Flotow) comb. nov., L. rupicola (L.) Zahlbr. subsp. rupicola var. efflorens var. nov., L. rupicola (L.) Zahlbr. subsp. subplanata (Nyl.) comb. nov., L. rupicola (L.) Zahlbr. subsp. sulphurata (Ach.) comb. nov., L. rupicola (L.) Zahlbr. subsp. arctoa subsp. nov., L. swartzii (Ach.) Ach. subsp. nylanderi (Rasanen) comb. nov., L. swartzii (Ach.) Ach. subsp. nuorensis subsp. nov., and L. swartzii (Ach.) Ach. subsp. caulescens (Steiner) comb. nov.]
[Edit/Delete] [Upload PDF/URL] [ET: 898]
Keywords: NEGATIVE FAST ATOM BOMBARDMENT/ CHEMISTRY/ TECHNIQUES
Abstract: 7 figures. 2 tables. ["The combination of these methods enables the unambiguous structural determination of the components within crude extracts of lichens. Thus, compounds of the tridepside, didepside, depsidone, and usnic acid type were identified by their specific fragmentation patterns without any isolation, purification or derivatization procedures."]
[Edit/Delete] [Upload PDF/URL]
Keywords: CULTURE/ MYCOBIONT/ LECANORA/ PANNARIN/ XANTHONES/ CHEMISTRY
Abstract: 3 tables. 6 figures. ["A chemotype of the natural lichen Lecanora dispersa contains 2, 7-dichlorolichexanthone as the major secondary compound, but cultured spore isolates, growing without the alga, produced pannarin and related depsidones (HPLC, TLC, and MS) instead. Surprisingly, pannarin could not be confirmed in voucher materials of the natural source lichen, but the biosynthetic potential for this depsidone was proven for the species by a herbarium survey. The production of pannarin by the isolated mycobionts reported in the present study, however, unequivocally confirms Komyia and Shibata's hypothesis that typical lichen depsidones can indeed be synthesized by isolated lichen fungi with no assistance from the alga."]
[Edit/Delete]
[Upload PDF/URL]
[ET: 896]
Keywords: 4, 5-DICHLORO-3-O-METHYL-NORLICHEXANTHONE/ 4, 5-DICHLORONORLICHEXANTHONE/ ARTHOTHELIN/ ATRANORIN/ CHLORATRANORIN/ DIPLOICIN/ LECANORACEAE/ LECIDELLA/ MASS CHROMATOGRAPHY/ MASS SPECTROMETRY/ THIOPHANINIC/ THURINGIONE
Abstract: [Specimens of Lecidella carpathica and L. viridans, including the type specimens, were analyzed by TLC and mass spectrometry. L. carpathica contains atranorin, chloroatranorin, diploicin, thuringione, and traces of 4, 5-dichloro-3-O-methylnorlichexanthone. L. viridans contains thiophanic acid, arthothelin, and traces of 4, 5-dichloronorlichexanthone.]
[Edit/Delete]
[Upload PDF/URL]
[ET: 1650]
Keywords: LEPRARIA/ LEPROLOMA
Abstract: 1 fig. [Study based on analysis of 183 specimens, mostly from central Europe. Aspects of the morphology, ecology, and taxonomy of L. incana are also described. Based on the study of type material, Lepraria crassissima is regarded as a synonym, although a number of chemically and morphologically distinct species are included under that name in herbaria.]
[Edit/Delete] [Upload PDF/URL] [ET: 882]
Keywords: CHEMISTRY/ LEPROLOMA/ NEW TAXA/ COLOMBIA
Abstract: 1 table. 1 figure. [Detailed study of 240 specimens primarily from Europe. Several substances are reported for the first time, and some new distribution records are given. New: Leproloma sipmanianum Kummerling & Leuckert sp. nov. (Colombia).]
[Edit/Delete] [Upload PDF/URL]
Keywords: ENDANGERED SPECIES/ GERMANY/ RED LIST
Abstract: tab. 1
[Edit/Delete] [Upload PDF/URL]
Keywords: PROTOPARMELIA/ CHEMISTRY/ EUROPE/ LECANORA/ KEY/ NEW TAXA/ MASSACHUSETTS/ COLORADO
Abstract: 3 maps. 3 plates. ["The lichens related to Protoparmelia (formerly Lecanora) atriseda are distinguished within the genus Protoparmelia by filiform, often curved spermatia, by the regular presence of norstictic acid, at least in excipula, and by close parasitic connections to various lichen hosts." Treatment of five species; key. New: Protoparmelia Sect. Phaeonora sect. nov., Protoparmelia cupreobadia (Nyl.) Poelt comb. nov., P. leproloma (R. Sant.) Rambold & Poelt comb. nov., P. phaeonesos Poelt sp. nov., and P. placentiformis (Steiner) Poelt comb. nov.]
[Edit/Delete] [Upload PDF/URL] [ET: 2325]
Keywords: LASALLIA/ CHEMISTRY/ DEPSIDES/ ANTHRAQUINONES
Abstract: 3 figures. 1 table. [Chemical studies on 11 species by HPLC. Hiascic acid and ovoic acid are reported for the first time from the genus. A key to the taxa is also included.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOSYNDROMES/ CHEMOTYPES/ LECIDELLA/ MASS SPECTROMETRY/ TLC/ XANTHONES
Abstract: 11 map [Thin-layer chromatography and mass spectrometry were used to study the chemotypes and chemosyndromes in this group of crustose lichens. The european distributions of the species and their chemotypes are described.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: CHLOROXANTHONES/ XANTHONES
Abstract: 2 fig. 5 tab. [Provides supplementary TLC techniques for the identification of chloroxanthones.]
[Edit/Delete] [Upload PDF/URL]
Keywords: EUROPE/ LEPRARIA/ MS-MS ANALYSIS/ TLC
Abstract: 3 fig. 1 tab. [Analysis by TLC and in some cases mass spectrometry of 21 specimens from central Europe. "The major compound is a triterpene, for which the name 'lesdainin' is proposed. The compound is supposed to be identical with 6Ó-acetoxyhopan-11-ol."]
[Edit/Delete]
[Upload PDF/URL]
Keywords: CHEMOSYNDROMES/ CHROMATOGRAM SPECTRAL PHOTOMETRY/ EUROPE/ LEPRARIA/ MS-MS ANALYSIS/ TLC
Abstract: 1 fig. 2 tab. [Chemical analysis (by TLC, mass spectrometry and/or chromatogram spectral photometry) of 362 specimens of Lepraria lobificans, mostly from central Europe. This species produces the stictic acid-constictic acid chemosyndrome, in addition to zeorin, atranorin and a number of minor compounds. Includes partial synonymy, and a tabular presentation of the differences between L. lobificans and L. incana, which are often mistaken for one another.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ GENERIC CONCEPTS/ LECIDELLA/ XANTHONES
Abstract: 1 fig. 1 tab. [Discussion of the use of secondary chemistry, especially xanthones, to delimit the genus Lecidella and the species within the genus.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ CHEMOTYPES/ CORTICAL CHEMISTRY/ CORTICAL PIGMENTS/ EVOLUTION
Abstract: [Discussion of the taxonomic significance of substitutions and additions to the various secondary substances, especially in the cortex, and including crystalline and amorphous pigments.]
[Edit/Delete] [Upload PDF/URL]
Keywords: LECANORACEAE/ LECIDEA/ LECIDELLA/ NORTH AMERICA/ SOUTH AMERICA
Abstract: 13 fig. ["Lecidella, a widespread genus of crustose lichens, includes 19 saxicolous species in America. These are recorded, and details of chemistry, ecology and biogeography are presented. The American distribution of most species and their chemotypes is mapped. A key for the determination of the species is provided." New: Lecidella herteliana sp. nov. (Bolivia, Venezuela)]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ LECANACTIS
Abstract: 2 fig. 1 tab. [Analysis of 51 specimens, mostly from central Europe.]
[Edit/Delete] [Upload PDF/URL]
Keywords: EUROPE/ LEPRARIA/ LEPROLOMA
Abstract: [An abstract of a paper presented at "Festkolloquium - Siegfried Huneck."]
[Edit/Delete] [Upload PDF/URL]
Keywords: AIR POLLUTION/ GERMANY/ RED LIST/ THREATENED
Abstract: 5 fig. 2 tab.
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTYPES/ LECANORACEAE/ LECIDELLA/ XANTHONES
Abstract: 14 fig. 1 tab. ["The genus is chemically mainly characterized by the abundant occurrence of chlorinated xanthones. Distribution patterns of species and their chemotypes are discussed."]
[Edit/Delete] [Upload PDF/URL] [ET: 2676]
Keywords: FATTY ACIDS/ LEPRARIA/ NEPHROSTERANIC
Abstract: 1 fig. [The major substances in this species are atranorin and the fatty acid nephrosteranic acid. The species is newly reported for southern Europe, Turkey, and Morocco.]
[Edit/Delete] [Upload PDF/URL]
Keywords: FATTY ACIDS/ JACKINIC ACID/ LEPRARIA
Abstract: 1 fig. [Major substances are atranorin and the fatty acids jackinic acid and/or roccellic acid.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ EUROPE/ LEPRARIA/ LEPROLOMA
Abstract: 1 fig. 2 tab. [Presents data from the analysis of over 2500 specimens of Lepraria (15 spp.) and Leproloma (3 spp.). New: Lepraria nylanderiana sp. nov. (Italy and central Europe), L. cacuminum (A. Massal.) comb. nov.]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ LECANORA/ XANTHONES
Abstract: 9 fig. [Treatment of eleven species, with details on morphology/anatomy, chemistry, ecology, and a key for identification. New: Lecanora agardhiana subsp. sapaudica var. lecidella (Poelt) Leuckert & Poelt comb. nov., L. eurycarpa sp. nov. (Austria, Switzerland), L. turbinata Poelt & Leuckert sp. nov. (Austria).]
[Edit/Delete] [Upload PDF/URL]
Keywords: HISTORY/ OBITUARY/ POELT
Abstract: 1 photo
[Edit/Delete] [Upload PDF/URL]
Keywords: OBITUARY/ POELT
[Edit/Delete] [Upload PDF/URL]
Keywords: BIOGEOGRAPHY/ CHLORINATED XANTHONES/ LECIDELLA/ XANTHONES
Abstract: 1 fig. 3 tab. [New: Lecidella aeruginea (H. G. Falk) comb. nov., L. leprothalla (Zahlbr.) comb. nov., L. sendaiensis (Zahlbr.) comb. nov., L. tumidula (A. Massal.) comb. nov., L. xylophila (Th. Fr.) comb. nov.]
[Edit/Delete] [Upload PDF/URL]
Keywords: ARTHOTHELIN/ ASEMONE/ CHEMOTYPES/ CHLORINATED XANTHONES/ LECIDELLA/ XANTHONES
Abstract: 1 tab. [Distribution and chemistry of five chemotypes.]
[Edit/Delete] [Upload PDF/URL]
Keywords: LECIDELLA/ NEW ZEALAND/ PHILIPPINES/ URUGUAY
Abstract: [New: Lecidella aptrootii Knoph & Garnitz sp. nov. (Philippines), L. commutata Knoph & Leuckert sp. nov. (New Zealand, Uruguay).]
[Edit/Delete]
[Upload PDF/URL]
Keywords: LECIDEA/ LECIDELLA/ NOMENCLATURAL CONSERVATION
[Edit/Delete] [Upload PDF/URL]
Keywords: NOMENCLATURAL CONSERVATION/ NOMENCLATURE
[Edit/Delete] [Upload PDF/URL]
Keywords: GERMANY/ HUMAN IMPACT/ RECOVERY/ TERRICOLOUS LICHENS
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMOTAXONOMY/ LECANORA/ LECANORALES/ LECIDELLA
Abstract: 4 fig. 3 tab. [New: Lecidella aurata sp. nov. (South Africa), L. granulosula (Nyl.) comb. nov., Lecanora formosa (Bagl. & Carestia) comb. nov.]
[Edit/Delete]
[Upload PDF/URL]
Keywords: CHEMISTRY/ SPOT TESTS/ TLC
Abstract: 22 fig.
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ FRUTIDELLA/ LECIDEA
[Edit/Delete] [Upload PDF/URL]
Keywords: LICHENS/ LEPRARIA/ CHEMOTAXONOMY
Abstract: Three chemotypes are known for Lepraria eburnea J.R.Laundon: (1): alectorialic acid and protocetraric acid; (2) alectorialic acid and psoromic acid; and (3) alectorialic acid (formerly referred to "L. frigida"). Only chemotypes (1) and (3) were represented in the present study. Most specimens studies are from Central Europe and belong to chemotype (1); the only Australian specimen studied also belongs here. Chemotype (3) is represented by a few collections from the U.S.A., Greenland, Svalbard and Austria. Chemical analyses were performed with thin-layer chromatography and mass spectrometry. In both chemotypes, alectorialic acid was found to be accompanied by variable amounts of barbatolic acid (previously unknown in chemotype 3), 5,7-dihydroxy-6-methylphthalide (± trace) and 5,7-dihydroxy-6-formylphthalide (± trace, tentative identification only). The concentration of protocetraric acid in chemotype (1) is variable. The ecology of L. eburnea is also described.
[E-mail correction]
[Upload PDF/URL]
Keywords: CHEMISTRY/ CHEMOSYNDROMES/ CHEMOTYPES/ LECIDEA/ NORTH AMERICA
Abstract: 5 fig. [Chemical study of 860 North American specimens yields 15 different chemotypes.]
[Edit/Delete] [Upload PDF/URL] [ET: 3595]
Keywords: LECIDELLA/ SONORAN DESERT
Abstract: [Treatment of 18 species. New: Lecidella chiricahuana sp. nov. (Baja California, Arizona), L. nashiana sp. nov. (Arizona).]
[Edit/Delete] [Upload PDF/URL]
Keywords: CHEMISTRY/ CHROMONES/ FLAVESCIN/ LEPRARIA/ SORDIDONE
[Edit/Delete] [Upload PDF/URL]
Keywords: AIR POLLUTION/ BERLIN/ LITERATURE/ REINVASION/ WILLDENOW
Abstract: [Of the species reported from Berlin in 1787, 38 had disappeared by 1991. Improved air quality since then has resulted in reappearance of 11 species.]
[Edit/Delete]
[Upload PDF/URL]
Number of hits shown/total: 72/72.
Number of records in database: 41574.
Current date: 2024.12.02.OK