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Type specimens of the Rhizocarpon geographicum group. Thallus habits are shown in the left hand panels (i) and ascospores are shown in the right hand panels (ii). Ai & ii, R. drepanodes (M-0024019); Bi & ii, R. ferax (UPS L-108361); Ci & ii, R. tinei subsp. arcticum (UPS L-582559); Di & ii, R. diabasicum (H-9502464); Ei & ii, R. frigidum (S L-587); Fi & ii, R. prospectans (H-9502588); Gi & ii, R. lecanorinum (L-0399782); Hi & ii, R. macrosporum (UPS L-069173); Ii & ii, R. lindsayanum (H-9502545); Ji & ii, R. riparium (H-9502857); Ki & ii, R. saanaënse (H-9502520); Li & ii, R. sphaerosporum (S L-571); Mi & ii, R. sublucidum (H-9502642); Ni & ii, R. tavaresii (H-9502640). Scales: i = 1mm; ii = 10 µm.  

Type specimens of the Rhizocarpon geographicum group. Thallus habits are shown in the left hand panels (i) and ascospores are shown in the right hand panels (ii). Ai & ii, R. drepanodes (M-0024019); Bi & ii, R. ferax (UPS L-108361); Ci & ii, R. tinei subsp. arcticum (UPS L-582559); Di & ii, R. diabasicum (H-9502464); Ei & ii, R. frigidum (S L-587); Fi & ii, R. prospectans (H-9502588); Gi & ii, R. lecanorinum (L-0399782); Hi & ii, R. macrosporum (UPS L-069173); Ii & ii, R. lindsayanum (H-9502545); Ji & ii, R. riparium (H-9502857); Ki & ii, R. saanaënse (H-9502520); Li & ii, R. sphaerosporum (S L-571); Mi & ii, R. sublucidum (H-9502642); Ni & ii, R. tavaresii (H-9502640). Scales: i = 1mm; ii = 10 µm.  

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Article
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As part of a comprehensive revision of the Rhizocarpon geographicum species group using molecular and morphological approaches, we examined the name-bearing types of 15 species. We report ambiguities and inconsistencies with the reported features of some type specimens, original descriptions, and circumscriptions employed in keys for the identifica...

Contexts in source publication

Context 1
... Fig. 1Ai & ii) Rhizocarpon ferax H. Magn. ( Fig. 1Ci & ( Fig. 2) As there is no material eligible as a possible lectotype for Linnaeus's name in his herbarium (LINN), and Linnaeus (1753) cited the illus- tration of Dillenius (1742), the illustration serves as original material and has to be designated as a lectotype under Art. 9.12 of the current ...
Context 2
... Fig. 1Ai & ii) Rhizocarpon ferax H. Magn. ( Fig. 1Ci & ( Fig. 2) As there is no material eligible as a possible lectotype for Linnaeus's name in his herbarium (LINN), and Linnaeus (1753) cited the illus- tration of Dillenius (1742), the illustration serves as original material and has to be designated as a lectotype under Art. 9.12 of the current Code ( McNeill et al. 2012). Jørgensen et ...
Context 3
... Leicester Lit. Phil. Soc. 63: 58 (1969 ( Fig. 1Gi & ii) The nomenclature of this taxon is confus- ing because of the use of several very similar epithets: lecanora, lecanoricum, lecanorinum, and lecanorum. Flörke (1819: 4) described his variety "lecanora" from sandstone rocks around "Quedlingburg nach Westerhausen bei Blankenburg"; there can be little doubt that material distributed in the ...
Context 4
... Fig. 1Hi & ii) Rhizocarpon riparium ssp. lindsayanum (Räsänen) Thomson Nova Hedwigia 14: 456 (1967). Basionym: Rhizocarpon lindsayanum Räsänen, Revista Sudamer. Bot. 7: 87 (1942); type: Great Britain, Perthshire, Dunkeld, Birnam Hill, April 1856, W. L. Lindsay (H-9502545-as "Lecidea ...
Context 5
... Fig. 1Ii & ii) Rhizocarpon riparium ...
Context 6
... Fig. 1Ji & ...
Context 7
... Fig. 1Ki & ii) Rhizocarpon sphaerosporum Räsänen Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19 (not.): 6 (1944); type: Sweden, Uppsala, Gottsunda, 1893, E. Pärsson (S L-571-isotype, as "Rhizocarpon lecanorinum var. cyclica, Rhizocarpon ...
Context 8
... Fig. 1Li & ii) Rhizocarpon sublucidum Räsänen Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 21 (not. 16): 3 (1947); type: Switzerland, Les Mosses, 1882, E. A. Vainio ...
Context 9
... Fig. 1Mi & ii) Rhizocarpon tavaresii Räsänen Arch. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 3: 85 (1949); type: Portugal, Minho, Serra do Gerez-Outeiro Moço, 19 June 1947, C. N. Tavares (H-9502641- ...
Context 10
... Fig. 1Ni & ...

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