Keywords: PARMELIA DUBIA/ PUNCTELIA/ CHEMISTRY
Abstract: 2 tab. 10 fig. [Parmelia rudecta Ach., P. bolliana Mull. Arg., P. dubia (Wulf.) Schaer.]
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Keywords: LASALLIA/ CHEMISTRY/ AGE DISTRIBUTION
Abstract: 2 fig.
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Keywords: MICROCHEMICAL TEST/ TECHNIQUES/ USNIC/ ATRANORIN
Abstract: 1 fig.
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Keywords: CHEMISTRY/ EVERNIA
Abstract: 1 tab. [5 species.]
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Keywords: CHEMISTRY/ DEPSIDE/ CETRARIA CILIARIS/ OLIVETORIC/ PHYSODIC
Abstract: 1 fig. [Olivetoric and physodic acids are reported from a single thallus of Cetraria ciliaris Ach.]
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Keywords: CHEMISTRY/ PARMELIA CRYPTOCHLOROPHAEA
[Edit/Delete] [Upload PDF/URL] [ET: 192]
Keywords: RAMALINA SILIQUOSA/ CHEMISTRY/ HYPOPROTOCETRARIC ACID/ DEPSIDONE
Abstract: [Including hypoprotocetraric acids, a new depsidone.]
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Keywords: MICROCHEMICAL TESTS/ TECHNIQUES/ HYPOPROTOCETRARIC ACID/ CHEMISTRY/ RAMALINA
Abstract: 5 fig. 1 tab. [A new lichen substance and constituent of Ramalina species.]
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Keywords: ASAHINEA/ NEW TAXA/ CETRARIA
Abstract: 4 fig. 1 tab. [New: Asahina gen. nov., A. chrysantha (Tuck.) comb. nov., A. scholanderi (Llano) comb. nov., A. kurodakensis (Asah.) comb. nov.]
[Edit/Delete] [Upload PDF/URL] [ET: 1565]
Keywords: CONFLUENTIC/ HERPOTHALLON/ CHIODECTON/ CHEMISTRY
Abstract: 7 fig.
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Keywords: DEPSIDONE/ PARMELIA/ STRUCTURE/ 4-O-METHYLPHYSODIC/ HYPOTRACHYNA
Abstract: [The new depsidone is 4-O-methylphysodic acid.]
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Keywords: CHEMISTRY/ SCROBICULIN/ 4-O-METHYLPHYSODIC/ MICROCHEMICAL TESTS/ TECHNIQUES
Abstract: 7 fig. 2 tab.
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Keywords: RAMALINA PALUDOSA/ CHEMISTRY
Abstract: 10 fig.
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Keywords: SCROBICULIN/ LOBARIA SCROBICULATA/ STRUCTURE/ CHEMISTRY/ LOBARIA AMPLISSIMA
Abstract: 1 fig.
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Keywords: CETRARIA CILIARIS/ NEW TAXA
Abstract: 7 fig. [4 species. New: Cetraria halei nom. nov., C. microphyllica sp. nov.]
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Keywords: ECOTYPES/ HABITAT SELECTION/ RAMALINA SILIQUOSA/ BRITISH ISLES/ CHEMOTAXONOMY
Abstract: 2 fig. [Studies on the Ramalina siliquosa group in Britain.]
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Keywords: THELOTREMATACEAE/ CHEMISTRY
Abstract: 2 tab. [13 species.]
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Keywords: CETRELIA/ PLATISMATIA/ PARMELIA/ CETRARIA/ NEW TAXA/ KEYS
Abstract: 5 tab. 31 fig. 25 pl. [Morphology, chemistry, taxonomy, and phytogeography; keys. Recognition of 24 species in 2 genera. New: Cetrelia gen. nov., C. alaskana (C. Culb. & W. Culb.) comb. nov., C. braunsiana (Mull. Arg.) comb. nov., C. cetrarioides (Del. ex Duby) comb. nov., C. chicitae (W. Culb.) comb. nov., C. collata (Nyl.) comb. nov., C. davidiana sp. nov., C. delavayana sp. nov., C. isidiata (Asah.) comb. nov., C. japonica (Zahlbr.) comb. nov., C. nuda (Hue) comb. nov., C. olivetorum (Nyl.) comb. nov., C. pseudolivetorum (Asah.) comb. nov., C. sanguinea (Schaer.) comb. nov., C. sinensis sp. nov., Platismatia gen. nov., P. erosa sp. nov., P. formosana (Zahlbr.) comb. nov., P. glauca (L.) comb. nov., P. herrei (Imsh.) comb. nov., P. interrupta sp. nov., P. lacunosa (Ach.) comb. nov., P. norvegica (Lynge) comb. nov., P. regenerans sp. nov., P. stenophylla (Tuck.) comb. nov. and P. tuckermanii (Oakes) comb. nov.]
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Keywords: CHEMISTRY/ CATALOG/ BOTANICAL GUIDE/ HANDBOOK
Abstract: [Price: $12.50 (cloth). A chemical summary of all lichen substances, a botanical index to the occurrence of these compounds in all taxa from which they have been reported, and a discussion of the biogenetic and structural relationships of the compounds. The chemical guide gives physical data, chemical structures, and annotated references; the botanical guide lists the substances in about 2, 000 taxa. About 1, 200 references.]
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Keywords: CHEMISTRY
Abstract: [14 species.]
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Keywords: CHEMISTRY/ CLADONIA CHLOROPHAEA/ CLADONIA PERLOMERA/ NEW TAXA/ DEPSIDES
Abstract: 5 fig. 5 tab. [New: Cladonia perlomera Krist. sp. nov.]
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Keywords: STEOSPORIC/ DEPSIDE/ RAMALINA/ CHEMISTRY
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Keywords: CHEMISTRY/ CULBERSON/ GUIDE/ CATALOG/ SUPPLEMENT/ BIBLIOGRAPHY
Abstract: 4 fig. [Data from 295 papers; summary of information for hundreds of taxa. Available from the American Bryological and Lichenological Society.]
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Keywords: CHEMISTRY/ TLC/ TECHNIQUES
Abstract: 2 fig. 1 tab.["A procedure for the routine identification of the products of lichen-forming fungi by thin-layer chromatography is described. Microextracts of plant fragments are chromatographed in three solvent systems. The spots of unknowns are assigned to Rf classes defined by the Rf values of marker controls of two lichen substances (atranorin and norstictic acid) chromatographed on every plate. The unknowns are tentatively identified by sorting (by Rf classes) punched cards summarizing microchemical data for all compounds previously studied. The preliminary identification is then confirmed by additional microchemical tests. The open-ended system can incorporate new and unknown compounds as well as information from other chromatographic systems. Data obtained by the standardized procedure are given for 104 products."]
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[ET: 266]
Keywords: PHYLOGENY/ EVOLUTION/ CHEMISTRY/ REVIEW
Abstract: 2 fig. 5 tab. [A review paper.]
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Keywords: CHEMISTRY/ DIPLOSCHISTES
Abstract: 1 tab. [Constituents of 19 taxa.]
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[ET: 197]
Keywords: TECHNIQUES/ HPLC/ CHEMISTRY
Abstract: 1 tab. 10 fig.
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Keywords: CHEMISTRY/ TLC/ TECHNIQUES/ IDENTIFICATION/ CHROMATOGRAPHY
Abstract: 5 tables. [Data for 220 compounds.]
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[ET: 258]
Keywords: CHEMISTRY/ 2-O-METHYLPERLATOLIC/ PERTUSARIA
Abstract: 1 fig.
[Edit/Delete] [Upload PDF/URL] [ET: 200]
Keywords: LECIDEA/ DEPSIDE/ 2'-O-METHYLANZIAIC/ CHEMISTRY
Abstract: 2 fig. 1 tab.
[Edit/Delete] [Upload PDF/URL] [ET: 195]
Keywords: HYPOPROTOCETRARIC/ 4-O-DEMETHYLNOTATIC/ CHEMISTRY/ DEPSIDONE
Abstract: 2 fig. 2 tab.
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Keywords: HYPOTRACHYNA / MORPHOLOGY / CHEMISTRY/ EVOLUTION/ HYBRIDIZATION
Abstract: [19 species; biogenetic considerations of secondary products. "The major chemistries show clear correlation with geography, but groups based upon morphological characters do not. The origin of the present day species can be explained by ancient hybridizations of chemically different types and subsequent parallel morphological evolution."]
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Keywords: PARMELIA/ SPECIES PAIRS/ PARALLEL EVOLUTION/ PARMOTREMA/ REPRODUCTION
Abstract: 1 fig. 1 tab. ["The asexual lichen-forming fungus Parmelia hypotropa has two common chemical races that differ sharply in biogeography and niche characteristics and appear to have been derived by morphologic parallelism from chemically identical races of the closely related P. perforata, which is sexual. Among the lichen fungi many chemically variable asexual morphs, which conventional taxonomies treat as species, are probably polyphyletic like P. hypotropa."]
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Keywords: THIN LAYER CHROMATOGRAPHY / TECHNIQUES/ TLC / CHEMISTRY
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Keywords: PARMELIA/ MELANELIA/ NEOFUSCELIA/ CHEMISTRY/ DEPSIDES/ 4-O-METHYLOLIVETORIC/ LOXODELLIC/ NEW TAXA
Abstract: 1 figure. 1 table. [New Parmelia brattii Essl. sp. nov. and P. loxodella Essl. sp. nov.]
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Keywords: TLC/ TWO DIMENSIONAL/ CHEMSITRY/ TECHNIQUES
Abstract: 2 figures. 1 table. ["Two-dimensional thin-layer chromatography is useful for microchemical studies on mixtures difficult to resolve by the standardized one-dimensional thin-layer chromatographic method now commonly used for lichen products. A modified two-dimensional technique uses the large body of standardized Rf data already accumulated for these compounds."]
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Keywords: ASAHINA/ HISTORY/ JAPAN/ CHEMISTRY
Abstract: Illus.
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Keywords: RAMALINA/ BONINIC/ CHEMISTRY/ NEW TAXA/ MEXICO
Abstract: [New: Ramalina asahinae sp. nov.]
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Keywords: FUMARPROTOCETRARIC/ CLADONIA/ NORTH CAROLINA/ ECOLOGY/ PHYSIOGRAPHY
Abstract: 1 figure. 1 table.
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Keywords: LEPRARIA/ PARMELIA/ DISTRIBUTION/ ECOLOGY
Abstract: 1 table.
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Keywords: CHEMISTRY/ BIBLIOGRAPHY
Abstract: [Summary of data from 607 publications from the late 1960's to 1975, with the addition of some papers from 1976. Data on many compounds of which 124 are newly reported from lichens; chemical reports are summarized for hundreds of species and infraspecific taxa including 1302 not represented in the original book or the first supplement. Available for $9.00 postpaid from the American Bryological and Lichenological Society, Missouri Botanical Garden, 2345 Tower Grove Ave., St. Louis, MO 63110.]
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Keywords: ARTIFACTS/ CHEMISTRY/ HERBARIUM TECHNIQUES/ HYPOTRACHYNA/ THERMAL EFFECTS
Abstract: 1 figure. 2 tables. ["Unsuspected thermal degradation of secondary products in lichens prior to chemical study, although probably uncommon, can lead to mistaken conclusions and taxonomic error. Thermally induced artifacts were found in the chemistries of Hypotrachyna partita from a site of volcanic activity in Costa Rica and in the type of H. prolongata from Haiti that had been dried for the herbarium with heat."]
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Keywords: CHEMOSYNDROMES/ CHEMISTRY/ CETRELIA/ NEW TAXA/ PARMELIACEAE
Abstract: 2 figures. 3 tables. ["Analysis of the chemistry of Cetrelia (Parmeliaceae) by new techniques reveals a type of variation that does not match the model of classical variation in the lichen-forming fungi. Instead of accumulating only one or two medullary constituents as previously believed, the 15 species of Cetrelia synthesize natural products in biogenetically meaningful sets (here called chemosyndromes) .... Comparison of the chemosyndromes of morphologically similar species groups gives evidence that the differentiation in Cetrelia occurred through a combination of parallel morphological and parallel chemical evolution." New: Cetrelia monachorum (Zahlbr.) comb. nov.]
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Keywords: PSEUDEVERNIA/ ECOLOGY/ CHEMISTRY/ EUROPE/ SWEDEN
Abstract: 1 figure. 3 tables. [Four products new to the genus. "In southwestern Sweden site-to-site and within-site comparisons of the proportions of the chemotypes on the same and on different substrates showed great variations, some significant differences, but no consistant correlations."]
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Keywords: CHEMSITRY/ SYNTHESIS/ DEPSIDONES/ STRUCTURE
Abstract: 1 table.
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Keywords: CHEMISTRY/ STRUCTURE/ COLENSOIC/ DEPSIDONES
Abstract: 1 table.
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Keywords: CHEMISTRY/ LECANORA/ DEPSIDES
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Keywords: OROPOGON/ BIOGENESIS/ METABOLITES/ COSTA RICA/ GUATEMALA/ PERU/ OWN/ DEPSIDE/ PANNARIC ACID/ DIBENZOFURAN
Abstract: 4 tables. 3 figures. [Specimens studied from Costa Rica, Guatemala, and Peru. Three new depsides, 2'-O-methylatranorin, methyl 3-a-hydroxy-4-O-demethylbarbatate and methyl 4-O-demethylbarbatate, were discovered. The dibenzofuran pannaric acid was detected for the first time in the genus. Results of the study "...support a biogenetic hypothesis involving C-methylation and/or C-formyulation at the polyketide stage and a metabolic grid of redox reactions of aromatic precursors leading to the para-depsides, depsidones, benzyl esters, and meta-depsides typical of lichens".]
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Keywords: CETRELIA/ PARMELIACEAE
Abstract: 1 table. 8 figures. [New chemical and distributional information on these two taxa.]
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Keywords: CHEMISTRY/ TECHNIQUE/ TLC
Abstract: 3 figures. 1 table. [A summary in German of previously published standardized systems for TLC of lichen compounds.]
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[ET: 193]
Keywords: LECIDEA/ TLC/ HPLC/ PLANAIC/ 4-O-DEMETHYLPLANAIC/ CHEMISTRY/ SPORES
Abstract: 5 figures. 2 tables. [TLC and HPLC investigations showed joint occrrence of planaic acid and 4-O-demethylplanaic acid in all specimens examined. Some specimens of L. lithophila produce this latter substance as the major consitiutent. "Correlations of spore shape, spore volume and chemistry give a clear separation fo L. lithophia. L. lithophilopsis Nyl. and L. plana from an unresolved aggregate including L. leptoboloides Nyl."]
[Edit/Delete] [Upload PDF/URL] [ET: 194]
Keywords: CHEMOSYNDROME/ XANTHOPARMELIA/ DEPSIDE/ 3-A-HYDROXYBARBATIC/ MEXICO
Abstract: 7 figures. 1 table. [New: Xanthoparmelia moctezumensis Nash sp. nov. Includes distributional and chemical data on X. ajoensis and X. tucsonensis as well.]
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Keywords: SYNTHESIS/ CLADONIA/ RHIZOPLACA/ LECANORA/ TREBOUXIA/ CHEMISTRY/ DEPSIDE/ PSEUDOTREBOUXIA/ GROWTH/ CULTURE/ SYMBIOSIS/ ENZYME
Abstract: 12 figures. 1 table. ["Successful resynthesis of the Cladonia cristatella mycobiont with its normal phycobiont and with Trebouxia isolates from 12 other species of lichens all produced the characteristic depside barbatic acid as the major secondary product. No characteristic lichen products were found in cultures of the C. cristatella mycobiont either alone, under a variety of cultural conditions, or mixed with Pseudotrebouxia phycobionts under the same conditions that led to the successful resynthesis with Trebouxia phycobionts. The production of characteristic lichen products is affected primarily by the establishment of a successful symbiosis and secondarily by as yet poorly defined environmental factors. The formation of many characteristic lichen products may involve algal inhibition of fungal enzymes."]
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Keywords: PARMELIA/ MICROCONIDIA/ DIMORPHISM/ PUNCTELIA/ NEW TAXA/ NORTH AMERICA
Abstract: 2 tables. 4 figures. ["The first microconidial dimorphism in noncrustose lichen-forming fungi to have ecogeographical correlations is reported from two American species." Parmelia semansiana sp. nov. is recognized as separate from Parmelia hypoleucites Nyl.]
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Keywords: DEPSIDONE/ B-ORCINOL/ TECHNIQUE/ TLC/ CHROMATOGRAPHY/ CHEMISTRY
Abstract: 4 figures. 2 tables. [A new solvent system of toluene/ethyl acetate/formic acid is employed to separate B-orcinol depsidones with low Rf values. "Standardized chromatographic data and examples of specific problems are given. Chemical analyses are reported for 25 lichen species from 176 genera." Solvent G is toluene/ethyl acetate/formis acid (139:83:8, v/v/v; 230 ml).]
[Edit/Delete] [Upload PDF/URL] [ET: 260]
Keywords: RAMALINA/ FIJI/ NEW TAXA/ CHEMISTRY
Abstract: 2 figures. [New: Ramalina luciae sp. nov. "The new species Ramalina luciae is unique among sekikaic acid-producing members of the R. farinacea complex in its very low content of homosekikaic acid and in its lack of mono-O-demethyl derivatives of homosekikaic acid."]
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Keywords: TECHNIQUE/ CHEMISTRY/ MTBE/ SOLVENT/ TLC
Abstract: 1 table. [Use of MTBE in solvent B (hexane 140: MTBE 72: formic acid: 18) produces almost identical results as those obtained using diethyl ether without the problems of evaporation and dangerous storage.]
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[ET: 264]
Keywords: EVOLUTION/ PSEUDOPARMELIA/ ECOLOGY/ COMPETITION
Abstract: 5 figures. 1 table. ["Pseudoparmelia caperata in eastern North America may have sustained genetic impoverishment through the loss of gamodemes adapted to the microhabitat of rock as a result of intense competition with P. baltimorensis in the past. Each species still occsionally grows in the other's preferrd microhabitat and both may grow in approximately equal numbers on tree bases, which seem to be ecologically intermediate...."]
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Keywords: CLADONIA/ NEW TAXA/ NORTH CAROLINA
Abstract: 1 table. 6 figures. [New: Cladonia anitae W. Culb. et C. Culb., sp. nov.]
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Keywords: USNEA/ MEXICO/ LECANORIC/ ACIDS/ NEW TAXA
Abstract: [New: Usnea lecanorica sp. nov. The new species is described from collections from the state of Mexico and belongs to the Usnea florida group.]
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Keywords: CHEMISTRY/ REVERSED-PHASE LIQUID CHROMATOGRAPHY/ TECHNIQUE/ CETRELIA/ PARMELIA
Abstract: 3 tables. 6 figures. [The system was highly successful in separation and detection of lichen products from Cetrelia monachorum and Parmelia and has several advantages over previously used techniques.]
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Keywords: CHEMISTRY/ STRUCTURES/ GENERAL
Abstract: Many figures. [Detailed treatment of exclusive lichen products with structural configurations, physical properties and representative species. The manuscript was prepared in 1975, however, and thus some of the information is now out of date.]
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Keywords: DEPSIDES/ OWN/ FUSCIDEA/ DIMELAENA/ PHYSCIACEAE/ LECIDEACEAE/ TLC/ HPLC / CALIFORNIA
Abstract: 4 tables. 2 figures. [New depsides from Dimelaena oreina from California are isosphaeric and superlatolic acids. Fuscidea viridis Tønsb., sp. nov. is described from Norway and Sweden and contains the new substances hyperlatolic and isohyperlatolic acids.]
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[ET: 196]
Keywords: BIOGENETIC/ CHEMISTRY/ CLADONIA CHLOROPHAEA/ SYSTEMATICS/ REVIEW/ CLADISTICS
Abstract: 3 figures. 2 tables. [Biogenetic characters are used in a cladistic analysis rather than the chemical substances themselves. "The Cladonia chlorophaea group provides an example of how preliminary biogenetic hypotheses can lead to a cladogram for the 14 chemotypes presently known in the complex."]
[Edit/Delete] [Upload PDF/URL] [ET: 259]
Keywords: HAEMATOMMA/ CHEMISTRY/ METHYL BARBATATE/ ELATINIC
Abstract: 1 table. 12 figures. [The new substances are unique to the family. Elatinic acid is reported from three species and methyl barbatate from one species.]
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[ET: 198]
Keywords: CHEMISTRY/ TECHNIQUES/ HERBARIA/ DEPSIDES/ HPLC/ HAEMATOMMA/ JAPAN/ TLC
Abstract: 2 tables. 21 figures. ["A high-performance liquid chromatographic method originally devised to provide a reproducible measure of retention is used to determine chemical structures of new compounds in lichens. The method relates retention to a standard homologous series so that retention indices of members of other homologous series are linear with carbon number. Eight new orcinol-type p-depsides ... are reported from an endemic Japanese species, Haematomma pachycarpum. The significance of the technique used here lies in providing a way to characterize new compounds in rare or endangered species, thereby completing data sets for phylogenetic reconstructions."]
[Edit/Delete] [Upload PDF/URL] [ET: 726]
Keywords: CHEMICAL METHODS/ CHEMISTRY/ REVIEW
Abstract: 19 fig. [General review of lichen secondary products, techniques for their microchemical identification, and their structure and synthesis. Includes a discussion of two recently discovered new classes of phenolic lichen compounds, biphenyls and metal-ligand complexes.]
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Keywords: RAMALINA/ CHEMISTRY/ NEW CALEDONIA/ 4-O-METHYLOXOCRYPTOCHLOROPHAEIC
Abstract: 3 figures. 2 tables. ["The chemical structure of the new meta-depside supports a recently proposed scheme for the biogenetic relationships of orcinol-type lichen products in which meta-depsides are derived by 3'-hydroxylation and rearrangement of para-depsides." Collections of the Ramalina species were from New Caledonia.]
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[ET: 263]
Keywords: RAMALINA/ CHEMISTRY/ MEXICO/ DISTRIBUTION/ CHEMOSYNDROMES/ MICROSPECIES
Abstract: 57 figures. 3 tables. [Study of 244 specimens revealed 55 natural products, including 10 new substances, representing several chemotypes. "A biogenetic analysis of the chemotypes suggests an evolutionary origin by loss mutations." One group is centered in Mesoamerica and the other in the SE United States. "The typically apotheciate R. americana complex obviously reproduces primarily by spores, but it never produces spermagonia. Homothallism (selfing) could maintain the integrity of the chemotypes, which may represent a series of microspecies each adapted to its own segment of the total range of the complex."]
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[ET: 262|6]
Keywords: STIRTONIA/ CHEMISTRY/ PARA-DEPSIDES/ ANDAMAN ISLANDS/ INDIA/ ARTHONIACEAE
Abstract: 1 figures. 2 tables. ["Stirtonia ramosa, a corticolous crustose lichen from the Andaman Islands, contains two new para-depsides, 4-O-demethylsuperconfluentic and 2'-O-methylsuperconfluentic acids."]
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[ET: 2125]
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."]
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[ET: 896]
Keywords: ANTHRAQUINONES/ HAEMATOMMA/ HAEMATOMMONE
Abstract: 3 formulae ["The new anthraquinone haematommone from the apothecia of the lichen Haematomma puniceum has been identified as 1, 3, 6, 8-tetrahydroxy-2-acetylanthraquinone by spectroscopic methods." (The first author's name is misspelled "Hunek" on the title page.)]
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Keywords: DEPSIDONE/ HPLC/ MYCOBIONT CULTURE/ RAMALINA/ SECONDARY PRODUCTS IN CULTURE/ TLC
Abstract: 13 fig. 2 tab. ["Sixteen characteristic aromatic lichen products were identified in alga-free fungal cultures derived from single-spore isolates of four chemotypes of the Ramalina siliquosa species complex. The chemistries of many cultures are more complex than those of natural thalli. The compounds identified include the major ß-orcinol depsidones that characterize the chemotypes as well as biogenetically reasonable precursors not yet proved in natural thalli. Single-spore progeny from natural thalli can be assigned to chemotype without being lichenized with an alga. This result simplifies the use of secondary-product chemistry as a genetic marker to assess the limits of gene flow between chemotypes in natural populations."]
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[ET: 2128]
Keywords: CHEMISTRY/ HISTOLOGICAL DISTRIBUTION/ HISTOLOGY/ RAMALINA
Abstract: 3 fig. 1 tab. ["Usnic acid appears to be a constant secondary product of all chemotypes of the Ramalina siliquosa species complex. Its highly variable concentrations and apparent absence from some individuals are due to a preferential accumulation in apothecia and spermagonia, structures not necessarily included equally in all samples in routine chemical screenings."]
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Keywords: CHEMOTYPES/ GENE FLOW/ GENETICS/ MARITIME/ RAMALINA/ REPRODUCTIVE ISOLATION/ SIBLING SPECIES/ SPECIATION
Abstract: 9 fig. 4 tab. ["The lichens of the rock-inhabiting Ramalina siliquosa complex of maritime cliffs of western Europe are differentiated into six chemotypes characterized by a replacement series of ß-orcinol depsidones. These chemotypes are sharply zoned from the most sheltered to the most exposed positions in the the supralittoral zone. Since artificial crosses in lichens are impossible, the breeding system was investigated by an analysis of the progeny of maternals from nature - some growing in pure zones and others growing intermixed with different chemotypes where zones overlap. Overall, the chemotypes are highly reproductively isolated, the progeny tending to be chemically identical to their respective maternal individuals. Only one pair of chemotypes appears to represent a clear polymorphism; the remainder are apparently ecologically differentiated sibling species. Two chemotypes, which interbreed where their zones overlap, are apparently kept distinct by strong selection against unadapted sporelings in the "wrong" niche. Spermatia function over only short distances, also contributing to the reproductive isolation."]
[Edit/Delete] [Upload PDF/URL] [ET: 2388]
Keywords: CLADONIA/ GENE FLOW/ GENETICS/ MYCOBIONT CULTURE/ RAMALINA/ SECONDARY PRODUCTS
Abstract: 16 fig. 2 tab. [Discussion of the use of lichen substances as markers in genetic studies and for analysis of gene flow.]
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Keywords: 4-O-METHYLCRYPTOCHLOROPHAEIC/ BACIDIA/ SECONDARY PRODUCTS
Abstract: [The substance is reported from Bacidia absistens, where it is the only major secondary product.]
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Keywords: ANTHRAQUINONES/ BIOSYNTHESIS/ CRUSTINIC/ GENERIC CONCEPTS/ HPLC/ LASALLIA/ LASALLIC/ METHODS/ SATELLITE COMPOUNDS/ TLC/ UMBILICARIA/ UMBILICARIACEAE
Abstract: 27 fig. 8 tab. 1 appendix [Detailed examination of the secondary chemistry of 56 species in the genera Umbilicaria and Lasallia. "The study reported here 1) confirms many previous chemical identifications, 2) analyzes additional taxa, 3) identifies other compounds new to the family, and 4) compares HPLC and TLC methodologies for the identification of these compounds in fragments from herbarium specimens. The chemistries of Lasallia and Umbilicaria are compared and reassessed in light of these findings." Various chemical correlations observed support the separation of Lasallia and Umbilicaria.]
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Keywords: CRUSTINIC/ GYROPHORIC/ LASALLIA/ LASALLIC/ TRIDEPSIDES
Abstract: 1 tab. 1 scheme
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Keywords: CHEMISTRY/ DEPSIDES/ NMR/ TECHNIQUES/ TRIDEPSIDES/ UMBILICARIA
Abstract: 2 tab. 1 scheme
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Keywords: CHEMOTYPES/ NAID/ RAMALINA/ RAMALINACEAE/ TRIDEPSIDES/ TRIVARIC ACID
Abstract: 14 fig. 2 tab. [The new tridepside was found in only one thallus out of more than 600 analyzed.]
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Keywords: CHEMISTRY/ DIPLOICIA/ HPLC/ JAPAN
Abstract: 3 fig. [Includes photos and HPLC chemical data for the species. In Japanese with English abstract.]
[Edit/Delete] [Upload PDF/URL] [ET: 2977]
Keywords: LASALLIA/ POLYSACCHARIDES/ PUSTULAN/ UMBILICARIA/ UMBILICARIACEAE
Abstract: 2 fig. 2 tab. [47 species of Umbilicaria and 9 species of Lasallia were analyzed.]
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Keywords: CHEMISTRY/ HISTORY/ METHODS
Abstract: 2 fig. [Review.]
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Keywords: CHINA/ ETHNOBOTANY/ FOOD/ HUMAN USES/ LETHARIELLA/ LOBARIA/ MEDICAL/ RAMALINA/ THAMNOLIA
Abstract: 2 fig. [Notes on the use of five species as food (Lobaria isidiophora, L. kurokawae, L. yoshimurae, Ramalina conduplicans, R. sinensis) and another five species in health-promoting teas (Lethariella cashmeriana, L. sernanderi, L. sinensis, Thamnolia vermicularis, T. subuliformis)].
[Edit/Delete] [Upload PDF/URL] [ET: 3685]
Keywords: BOOK REVIEW/ CHEMISTRY
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Keywords: ALECTORIA/ BRYORIA/ CHINA
Abstract: 2 fig. 2 tab. [The new species, with long spiraling pseudocyphellae similar to several North American species of Bryoria, is odd due to its production of usnic acid.]
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Keywords: CHEMISTRY/ LETHARIELLA
Abstract: 2 fig. 1 tab. 1 formula.
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Keywords: CHEMISTRY/ LETHARIELLA/ SERNANDERIN
Abstract: 2 fig. 1 tab. [Twelve compounds are reported, including recently described sernanderin.]
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Keywords: CHINA/ CYANOMORPHS/ SOLORINA
Abstract: 2 fig. [The specimens of Solorina crocea containing only a cyanobacterial layer are the first reports of that species from China.]
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Number of hits shown/total: 90/90.
Number of records in database: 41575.
Current date: 2024.04.25.OK