Bulletin of the British Museum (Natural History)

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LICHEN GENUS MICAREA IN EUROPE 197 Fig. 56 A, spores of Bacidia myrtillicola (HBG - lectotype of Bacidia nitschkeana var. perpusilloides). B-C, Catillaria bouteillei (H-NYL 1884 - holotype of Lecidea littorella); B, spores; C, conidiogenous cells and conidia. Scale = 10 /u,m. pigment-caps; closely adhering pigment sometimes continuing down to about mid-hymenium level. Hypothecium hyaline. The status oiA. exilis s. str. as a British species requires confirmation. Catillaria rhodosphaeraTh . Fr. & HultinginTh. Fr. Lich. Scand. 2: 571 (1874). Type: Sweden, Dalsland, Haverud, 1870, /. Hulling (UPS - lectotype! ; UPS - isolectotype!). This species was provisionally referred to Micarea by Kilias (1980: 392), but in fact belongs to Biatora Fr., a name which requires conservation against Biatora Ach. (= Stenhammarella Hertel). In my opinion C. rhodosphaera represents a saxicolous form of Catillaria sphaeroides (Dickson) Schuler. Lecidea arceutina var. hypnaea Nyl. in Flora, Jena 51: 165 (1968). - Bacidia arceutina f . hypnaea (Nyl.) A. L. Sm. , Monogr. Brit. Lich. 2: 158 (1911). Type: Jersey, 1866, Larbalestier {W-]
198 BRIAN JOHN COPPINS arceutina (Ach.) Arnold. In his diagnosis Nylander gives the spore length as 45-70 /xm and on the holotype packet he wrote '45-20x1 yam'; my examination of the holotypefound the spores to be 38-51x1-5 /xm. Lecidea clavulifera Nyl. - see Psilolechia clavulifera. Lecidea demarginata Nyl. in Flora, Jena 61: 245 (1878). Type: Finland, Tavastia australis, Evo, 'supra saxum in sylva juniori, loco olim deusto', 1873,7. P. Norrlin, Norrlin & Nyl. Herb. Lich. Fenn. 179 (Hlectotype!; isolectotypes (without exsiccate label): H-NYL 20162! & 20163!). In the protologue Nylander cited material of Norrlin's from Finland and of Larbalestier's from Ireland. The epithet 'demarginata' was first used in 1875 on the label of Herb. Lich. Fenn. 179, although without a diagnosis. An example of this exsiccate is here selected as lectotype, and is a specimen of Lecidea erratica Korber. The cited Larbalestier material is represented in BM and H and belongs to M. lutulata. Lecidea denigrata var. bacidiella Vainio in Medd. Soc. Fauna Fl. fenn. 10: 28 (1883). - Micarea bacidiella (Vainio) Vezda, in Vezda &. V. Wirth in Folia geobot. phytotax., Praha 11: 100 (1976). Type: Finland, Lapponia kemensis, Sodankyla, Pyhatunturi, Kannolla, on hgnum, 1878, E. A. Vainio (TUR-VAINIO 22505 -holotype!). As stated by Vainio (1934: 462) this is a synonym of Bacidia miniuscula Anzi (i.e. B. beckhausii Korber). The following were notes made from the holotype of var. bacidiella: Thallus lignicolous, entirely endoxylic. Phycobiont cells c. 8-14 ^tm diam. Apothecia thinly marginate and ± plane when young, soon becoming convex and immarginate, black, c. 0-2-0-3 mm diam. Hymenium c. 35 /xm tall, with olivaceous vertical streaks, K+ violet, C+ violet (not red). Asci clavate, 30-35x10-12 /im, 8-spored. Spores rod-shaped or slightly curved, (l-)3(-7)-septate, 17-26x1-7-2 /nm. Paraphyses simple or sparingly branched, 1-1-5 /xm wide; apices somewhat incrassate, to 2 /xm wide. Hypothecium hyaline. Excipulum dilute olivaceous (K+ violet), of radiating, branched hyphae c. 1-5-2 /xm wide embedded in a dense gel; hyphae becoming more distinct in K but not separating. Pycnidia immersed in the substratum, black, c. 50-100 /xm diam; walls olivaceous, K-l- violet. Conidia simple, hyaline, oblong- ellipsoid, often wider at proximal end, 2-8-3-5 x 1(-1 -4) /xm. B. beckhausii usually occurs on bark, although I have seen a few additional lignicolous specimens from Scotland. Micarea bacidiella sensu Vezda & Wirth {loc. cit. ) is not B. beckhausii but the superficially similar Micarea globulosella (see p. 135). Lecidea erysiboides Nyl. in Not. Sdllsk. Fauna Fl. fenn. 4: 232 (1859). - Catillaria erysiboides (Nyl.) Th. Fr. Lich. Scand. 2: 572 (1874). Type: Finland, Nylandia, Helsingfors [Helsinki], 'Gumtackt' on rotting decorticate pine trunk, 1858, W. Nylander (H - lectotype!; H-NYL p.m. 4514- isolectotype!). This name has been misapplied by many lichenologists and the majority of specimens seen belong to Micarea prasina, or other species such as Catillaria sphaeroides, Lecania cyrtella, and Micarea denigrata. The type material of L. erysiboides is not a Micarea but a species of Catillaria s. lat. , although I am uncertain of its affinities. It has small, plane to convex, reddish brown (testaceous) apothecia that are marginate when young, the excipulum is composed of much-branched, radiating hyphae which are distinct in K but still tightly bound by the gel matrix, and the spores are ovoid and often constricted at the septum, 1-septate with the upper cell usually enlarged and ± globose, 8-9-5x3-5 /xm. C. erysiboides has not been correctly reported from the British Isles but it should be looked for, especially in the eastern Scottish highlands. Additional specimens of C. erysiboides examined: NORWAY. Hordland: Granvin, on Betula lignum, 1904, Havaas, Lich. Exs. Norv. 292 (BG). FINLAND. Nylandia: Helsinki, 1859, W. Nylander (H-NYL 21650), and 1861 (BM). ITALY: Trentino ('Sudtirol'): Paneveggio, on top of cut stump of Picea, 2 ix 1883, Arnold, Lich. Exs. 1002 (BM ex K). USSR. 'Lapponia orientalis', 1863, A^. /. Fellman, Lich. Arct. 156 (BMexK). Lecidea fuliginea Ach., Syn. Lich.: 35 (1814). - Micarea fuliginea (Ach.) Fr., Syst. orb.: 257 (1825). - Micarea fuliginea (Ach.) Fr., Stirp. agrifemsion. : 37 (1825); comb, inval. (Arts 34.1, 43). I have not seen the type of this name but it is probably a synonym of Lecidea icmalea Ach. A later synonym of the latter is Pannularia perfurfurea Nyl. which is the type of the genus Placynthiella Gyelnik. Lecidea gelatinosa Florke in Magazin Ges. naturf. Fr. Berl. 3: 201 (1809). - Micarea gelatinosa (Florke) Brodo in Bryologist 70: 216 (1967). I have not seen type material of this species, but if its general interpretation is correct then it is not a Micarea. In fact it belongs in the Lecidea granulosa group, which includes L. aeruginosa Borrer, L. aeneofusca Florke ex Flotow, L. granulosa (Hoffm.) Ach. and L. viridescens (Schrader) Ach. These species are not congeneric with the type species of Lecidea Ach. (L. fuscoatra (L.) Ach.) and they await the formal transference to a genus in the Trapeliaceae . Further detailed studies are needed to see if they can be 1
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Infrageneric considerations LICHEN
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