Reference health
Chemical variation and the species concept in lichenized ascomycetes
3 of 24 checkable references need attention · checked 2026-07-23
At the dated check, the references listed below either did not resolve in Crossref or DataCite, or carried a retraction notice. Each one is shown with the registry record that put it there.
16 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
References needing attention
does not resolve to a known work10.2307/3793365
does not resolve to a known work10.2307/3807436
does not resolve to a known work10.1128/MMBR.44.2.230-251.1980
The 21 checked references that resolve
resolves10.1016/0021-9673(72)80013-X
Improved conditions and new data for identification of lichen products by standardized thin-layer chromatographic method
resolves10.2307/3242749
Biogenetic Relationships of the Lichen Substances in the Framework of Systematics
resolves10.1016/0305-1978(83)90003-0
Genetic and environmental effects of growth and production of secondary compounds in Cladonia cristatella
resolves10.2307/2805533
Analysis of Chemical and Morphological Variation in the Ramalina siliquosa Species Complex
resolves10.2307/3242752
Chemistry and Sibling Speciation in the Lichen-Forming Fungi: Ecological and Biological Considerations
resolves10.2307/3242750
Correlations and Non-Correlations of Chemical Variation Patterns with Lichen Morphology and Geography
resolves10.1017/S002428298100008X
Lichen Products of <i>Cladonia Stellaris</i> and <i>C. Rangiferina</i> Maintained Under Artificial Conditions
resolves10.2307/3242754
Multiple Enzyme Forms of Morphotypes in a Population of Cladonia cristatella Tuck.
resolves10.1016/0305-1978(87)90001-9
Photosynthetical and nutritional implications in the accumulation of phenols in the lichen Pseudevernia furfuracea
resolves10.1017/S0024282984000190
The Content of Lichen Substances in <i>Ramalina Siliquosa</i> Cultured at Various Temperatures in Growth Cabinets
resolves10.1039/P19810000855
Depsidone synthesis. Part 16. Benzophenone–grisa-3′,5′-diene-2′,3-dione–depsidone interconversion: a new theory of depsidone biosynthesis
resolves10.1139/b78-104
The taxonomy of the <i>Ramalina siliquosa</i> species aggregate (lichenized Ascomycetes)
resolves10.1139/b78-105
The comparative ecology and distribution and within-species variation of the lichenized Ascomycetes <i>Ramalina cuspidata</i> and <i>R. siliquosa</i> in the British Isles
The 16 references without a DOI — listed, not checked
no DOI — not checkedHandbook of Genetics
no DOI — not checkedChemistry in Botanical Classification
no DOI — not checkedHandbook of Genetics. 1
no DOI — not checkedRecent progress in the chemistry of lichen substances
no DOI — not checkedHandbook of Genetics
no DOI — not checkedMycologists' Handbook
no DOI — not checkedLichenology Progress and Problems
no DOI — not checkedLichen substances
no DOI — not checkedProgress and Problems in Lichenology in the Eighties
no DOI — not checkedAn Introduction to Plant Taxonomy
no DOI — not checkedProgress and Problems in Lichenology in the Eighties
no DOI — not checkedLichenum Generis Usnea, Studium Monographicum, Pars Systematica
no DOI — not checkedQuantitative variation and the ecological role of vulpinic acid and atranorin in the thallus of
no DOI — not checkedUsnea subgenus Eumilria in East Africa
no DOI — not checkedThe Filamentious Fungi, 1. Industrial Mycology
no DOI — not checkedCoevolution of Fungi with Plants and Animals
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-23 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
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