(2009): Lichens in Scandinavia known mainly from Norwegian type ...

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GRAPHIS SCRIPTA 21 (2009) Lichens mainly known from Norwegian types 6 it from the High-Arctic. However, these records need confirmation. It is highly unlikely that this species grows on saxicolous mosses. A specimen on Populus from the Mackenzie delta in the Northwest Territory, Canada (leg. Ahti, H) is according to S. Ekman (pers. comm.) not correctly identified. B. verecundula has not been recollected in the type locality recently. Biatora troendelagica Holien & Printzen Type: Norway, Sør-Trøndelag, Meldal, Nfacing slope of Stavelitjønn, c. 260 m, 1991, H. Holien 4785 (TRH!, holotype). This is a very inconspicuous, mainly sterile lichen, found in an old humid spruce forest. Apparently it belongs to the ‘rainforest’ species (Holien & Tønsberg 1996), some of which are quite rare but usually found in more than one locality, and often also in North America. The rarity of B. troendelagica is certainly due to its insignificant apparence. The collector has even been incapable to refind it in the type locality. Buellia tesserata Körb. Type: Norway, exact locality unknown: ‘an Schieferfelsen Norwegens von Hübener & Kurr gesammelt’ (L!, holotype, Fig. 6). Scheidegger (1993) separated Buellia tesserata from Buellia fimbriata (Tuck.) Sheard due to the presence of barbatic acid in the type specimen, but a renewed study (Rico et al. 2003) of its chemistry showed that it contains 3-chlorodivaricatic acid, just as specimens of B. fimbriata. The type also exhibits the same morphological characters, and is practically identical with material from Greece distributed by Zahlbruckner in Lich. Rar. 205 (UPS). After having seen the type of Buellia fimbriata (California, Bolander 116, FH!), we tend to agree with Rico et al. (op.cit.) that they are conspecific, and B. tesserata is the older name. Scheidegger (op.cit.) also had doubts concerning the origin of the specimen – a matter not further discussed by Rico et al. Figure 6. Buellia tesserata, part of holotype. Bar = 1 mm. (op.cit.). There is, however, little reason to believe that some confusion of labels took place. Hübener & Kurr travelled in Norway 1828 for Esslinger Reiseverein (Stafleu & Cowan 1979) and are not known to have visited Greece or Spain. Hübener & Kurr were accompanied to Dovre by the Norwegian doctor Wilhelm Boeck, who had a great interest in botany (Jørgensen 2007), certainly passing through Gudbrandsdalen. As long as their itinerary is unknown, the exact location is uncertain, but judging from the strongly thermophilous disposition of the species (Scheidegger 1991) it is most likely situated in the upper Gudbrandsdal. There are representatives of such elements in the upper parts of this valley and its neighbourhood, particularly in Vågå (Kleiven 1959), where there is a prominent xerophilous element present among the lichens (see above). It is, however, likely, that Hübener and Kurr started their travel in lower Telemark, travelling over Kongsberg, where there is also a thermophilous element in the flora (cf. the report by Wikström, 1831, on the botanical activity in Norway at that time), so it cannot be outruled that it was here the type was collected.
7 Per Magnus Jørgensen & Anders Nordin GRAPHIS SCRIPTA 21 (2009) An analysis of the rock made by petrologists at University of Bergen showed that the type grew on a micaschist of a type often associated with ultrabasic rock, which is known from Vågå. Buellia tesserata is accordingly an extreme representative of the xerophilous element Since it is a rather conspicuous species, it is, however, surprising that it has not been rediscovered in these parts where lichenologists have collected frequently. To finally dispel the doubts concerning the origin of the specimen a rediscovery is urgently needed. Another lichen with a most disjunct Mediterranean-Norwegian distribution is Staurolemma omphalarioides (Jørgensen & Henssen 1993), but this species is not quite as thermophilous as Buellia tesserata. Caloplaca dovrensis (H.Magn.) Degel. Type: Norway, Oppland, Hjerkin, alt. 1500 m, 1948, H. Larsson (UPS!, holotypus of Blastenia dovrensis H.Magn.). This species of the still very poorly understood black-fruited members of the Caloplaca ferruginea group was described by Magnusson (1950). Magnusson had a limitited material at his disposal and based the new species on rather subtle characters, such as hymenium height, size of verrucae and degree of development of a thalline margin. For an evaluation of these characters more material is needed. The species has also been reported by Degelius (1982), but, as he himself pointed out, his specimen differs in several characters from the type specimen. This shows that there is a larger variation than Magnusson was aware of, another indication of that the status of this species is doubtful. The specimen certainly belongs in the difficult Caloplaca concilians group which Wunder (1974) characterized as being particularly poor in characters. Members of this species group have been collected in the Dovre region by others, for example by Th. M. Fries (who called it Caloplaca ferruginea var. melanocarpa). We are for the time being inclined to include this species in C. concilians s.lat. until the variation of this complex is better understood. Caloplaca havaasii H.Magn. Type: Norway, Granvin, Skålsete, 1938, J. J. Havaas (UPS!, lectotype). This interesting and characteristic species of the Caloplaca marina group has recently been thoroughly re-evaluated (Arup 2006) and found to be quite distinct. It is surprising that there are no known collections from other localities. Though the habitat, a “saueheller” (=an overhang where the sheep seeks shelter), is special, there are several similar ones in western Norway. They are, however, not favorite localities for lichenologists. It is certainly significant that it was the sheep farmer Havaas who discovered it. In the herbarium he had named it Caloplaca ovinae (the Caloplaca of sheep), though Magnusson unfortunately changed the epithet when the name was published! Accordingly the rarity appears to be a result of the special habitat. It is still present in the type locality. Helocarpon pulverulum (Th.Fr.) Türk & Hafellner Type: Norway, Sør-Trøndelag, Oppdal, Dovre, Kongsvoll, Høgsnyta, 1863, Th. M. Fries (UPS!, holotype of Lecidea crassipes f. pulverula). This species was regarded by Coppins ( 1983) as an insignificant variation of Micarea (= Helocarpon) crassipes (Th.Fr.) Coppins. However, Hafellner & Türk (2001) reported it from Austria and re-evaluated its status. Though we are in doubt about their taxonomic conclusion, their find certainly excludes the taxon from the list of possible Norwegian endemics.
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