Reference health
The lichen genus<i>Caloplaca</i>in North and Central America with brown or black apothecia
14/14 checkable references clean · checked 2026-07-23
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
19 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.
The 14 checked references that resolve
resolves10.1639/0007-2745(1967)70[339:ATTLFO]2.0.CO;2
Additions to the Lichen Flora of North America. II
resolves10.2307/3243571
Caloplaca stantonii sp. nov. and Its Relationship to Caloplaca bolacina and Other Lobate to Squamulose Species in North America
resolves10.1006/lich.1993.1018
High performance thin layer chromatography (HPTLC), an improved technique for screening lichen substances
resolves10.1016/0021-9673(72)80013-X
Improved conditions and new data for identification of lichen products by standardized thin-layer chromatographic method
resolves10.1016/S0021-9673(01)97595-8
Conditions for the use of Merck silica gel 60 F254 plates in the standardized thin-layer chromatographic technique for lichen products
resolves10.1016/S0021-9673(00)81336-9
Substitution of methyl tert.-butyl ether for diethyl ether in the standardized thin-layer chromatographic method for lichen products
resolves10.2307/3241492
A Fourth Checklist of the Lichens of the Continental United States and Canada
The 19 references without a DOI — listed, not checked
no DOI — not checkedCIT0005
no DOI — not checkedCIT0009
no DOI — not checkedFries, Th. 1871.Lichenographia Scandinavica. Upsaliae, Sweden. 639 pp.
no DOI — not checkedCIT0012
no DOI — not checkedCIT0013
no DOI — not checkedCIT0014
no DOI — not checkedCIT0015
no DOI — not checkedCIT0018
no DOI — not checkedCIT0019
no DOI — not checkedNordin, I. 1972.Caloplaca, sect.Gasparriniai Nordeuropa Taxonomiska och ekologiska studier. Skriv Service, Uppsala, Sweden. 184 pp.
no DOI — not checkedCIT0021
no DOI — not checkedCIT0022
no DOI — not checkedOlivier, H. 1909.Lichens d'Europe. 2. Émile Le Maout, Cherbourg, France. 200 pp.
no DOI — not checkedPh.D. Dissertation
no DOI — not checkedCIT0027
no DOI — not checkedIn: Sixth ann. rep. U.S. geol. survey of the territories.
no DOI — not checkedCIT0033
no DOI — not checkedZahlbruckner, A. 1931.Catalogus lichenum universalis. 7. Borntraeger, Leipzig, Germany. 784 pp.
no DOI — not checkedCIT0035
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