A Synopsis of the Genera Skyttea, Llimoniella and - Lichens of ...

468 THE LICHENOLOGIST Vol. 32
(Fig. 7A)
For a description and additional illustrations, see Kiimmerling et al. (1993:
154-157).
Hosts. Species of the Lepraria neglecta-group, including L. caesioalba,
L. neglecta and L. cacuminum (Kiimmerling et al. 1993).
Distribution. Austria, France, Great Britain, Norway, Portugal, Russia,
Slovakia, Sweden, Greenland and the USA (Kiimmerling et al. 1993).
Observations. The ascospores in this species are biguttulate.
Specimens examined. Austria: Salzburg: Pinzgau, Hohe Tauern, Granatspitz-Gruppe, Tauern
Kogel S ober dem Weifisee, am E-Grat W ober dem Kaiser Tauern, 2550-2650 m, auf L. neglecta,
1996, Hafellner 37910 (h).—Great Britain: England: V.C. 3, South Devon: Dartmoor, Black
Tor Copse, on Lepraria, 1986, Giovanni (E, hb. Diederich). Scotland: V.C. 108, W Sutherland:
Stoer Peninsula, Culkein, on Lepraria, v 1985, Woods (E).—Portugal: Serra da Estrela, 5 km SW
of Manteigas, 1 km N of Curral do Martins, on Lepraria, 1998, van den Boom 20423
(h).—Sweden: Uppland: Funbo par., on L. neglecta, 1955, Santesson 11146, Santesson Fungi
Lichenicoti Exsiccati 269 (hb. Diederich).
Rhymbocarpus pertusariae Diederich, Zhurb. & Etayo sp. nov.
Rhymbocarpus insignis ascomatibus erumpentibus, atris, primo clausis, demum applanatis,
100-250 um, disco exposito, margine prominenti, interdum pubescenti, ascosporis anguste
ellipsoideis ad fusiformibus vel bacilliformibus, 0-1-septatis, 10-15 x 2-3-5 |im.
Typus: Sweden, Torne Lappmark, the Tornetrask Area, Abisko, Paddos, alt. c. 630 m, on open
calcareous rocks, on Penusaria panyrga, 29 August 1959, Santesson 13473 a (UPS—holotypus; hb.
Diederich—isotypus).
(Figs 7B, 14)
Ascomata aggregated, immersed to erumpent, broadly attached to the
substratum, black, initially ± closed, later applanate, disc exposed and margin
prominent, 100-250 um diam.; margin, when old, entire or with several deep
fissures, but thinner than in R. cruciatus and not appearing cruciate, not, or
rarely entirely, covered by hairs. Exciple with a dark brown pigment, K — ,
N -, mainly located in the outer layer, and a greenish pigment, K+
olivaceous, N —, present in the whole exciple, but best visible in the inner
layer, paraplectenchymatous, indistinctly prolonged in a stipe, laterally 35-
45 um thick, composed of elongate cells of 7-12 x 4-6 um, basally c. 45 um
thick, of isodiametric cells of 7-10 um diam., with cell walls strongly
gelatinized; excipular hairs, when present, hyaline to dark brownish green,
occasionally 1-2-septate, thin-walled, base not distinctly thickened, 13-
35 x 2-3 um. Subhymenium hyaline, 10-20 um thick. Hymenium hyaline,
55-65 um tall, KI - , with paraphyses easily separating. Epihymenium with a
greenish pigment, K+ olivaceous, N — . Paraphyses septate, hyaline, c. 2 um
thick, regularly branched, apically not or slightly thicker. Asci claviform to
subcylindrical, 36-53 x 6-9 um, wall apically not thickened, KI - , 8-spored;
ascogenous hyphae with croziers. Ascospores hyaline, narrowly ellipsoid to