The Lichens and Lichenicolous Fungi of Belgium and Luxembourg ...

THE LICHENS OF BELGIUM AND LUXEMBOURG. AN ANNOTATED CHECKLIST 71
contorta (Hoffm.) Kremp. subsp. contorta
Incl. A. viridescens (A. Massal.) Kremp.
On hard calcareous rocks and in artificial habitats
(concrete, walls, etc.).
B Fl.: RR, Camp.: RR, Brab.: RR, Mosan: AC
(locally common), Ard.: RRR. L Lorr.: AR.
Lit.: Ertz: 18, La69: 105, NL84: 12, NL92: 167, NL93:
42, Hoffmann & Van Rompu (1995).
contorta subsp. hoffmanniana S. Ekman & Fröberg
Syn.: A. hoffmannii auct., non (Ach.) Flagey
On hard calcareous rocks and in artificial habitats
(concrete, walls, etc.).
B Fl.: RRR, Brab.: RR, Mosan: AC (locally common).
L Lorr.: AR.
Lit.: DG: 32, Ertz: 18, La69: 105, NL84: 12, NL87: 20.
gibbosa (Ach.) Körb.
Syn.: Lecanora gibbosula H. Magn.
On siliceous rocks in exposed, natural habitats.
B - . L - . F Ard.: RRR.
Lit.: L5: 13 (as A. gibbosula), Mü1: 151 (B Ard., not checked).
moenium (Vain.) G. Thor & Timdal
Syn.: A. excavata G. Thor & Timdal
On concrete in ruderal conditions.
B - . L Ard.: RRR. Probably overlooked.
Lit.: L7: 84.
recedens (Taylor) Arnold
On siliceous rocks in natural and artificial habitats.
B Ard.: RRR. L Ard.: RR.
Lit.: L7: 84, Remy (1979).
cupreogrisea (Th. Fr.) Hue, syn. Lecanora cupreogrisea Th.
Fr. Mentioned from B Ard. by Mü1: 151 and Mü2: 196
(‘det. H. Magnusson’), but no specimen seen.
Lecanora endoleuca Hue. A name of uncertain application.
The type originating from B Mosan (near Dinant) (Hue
1898, Tonglet 1898) has not been examined recently.
excavata G. Thor & Timdal, see A. moenium
grisea Arnold. Reported from B Ard: RRR by Remy (1979),
but in need of confirmation. Relevant specimen not seen.
hoffmannii auct., non (Ach.) Flagey, see A. contorta subsp.
hoffmanniana
lacustris (With.) Th. Fr., see Ionaspis lacustris
laevata (Ach.) Arnold, syn. Lecanora laevata (Ach.) Nyl.
Published as L. cf. laevata from B Ard. by Mü1: 151, but
no specimen seen.
morioides Arnold, see Clauzadeana macula
radiosa (Hoffm.) Poelt & Leuckert, see Lobothallia radiosa
subdepressa (Nyl.) Arnold, syn. Lecanora subdepressa Nyl.
Reported from B by DG: 32, but no material seen.
viridescens (A. Massal.) Kremp., see under A. contorta
subsp. contorta
ASTROPLACA Bagl.
opaca (Fr.) Bagl., see Placolecis opaca
ATHELIA Pers.
*arachnoidea (Berk.) Jülich
Corticolous, mainly in polluted areas, normally
parasitic on epiphytic algae and ubiquitous
lichens like Lecanora conizaeoides.
B Fl.: RRR, Mosan, Ard., Lorr.: CC. L Ard.: CC,
Lorr.: CC.
Lit.: Di: 230-231, LF0: 2.
BACIDIA De Not.
absistens (Nyl.) Arnold
Corticolous, on Fagus in old humid forest.
B Ard.: RRR. L - .
Lit.: L2: 91.
arceutina (Ach.) Arnold
Corticolous, mainly on Acer campestre, Fraxinus
and Populus in forests in sheltered conditions, or
on roadside trees in ± exposed conditions.
B Mosan: R, Ard.: R, Lorr.: AR. L Ard.: RR, Lorr.:
RRR. F Ard.: RRR, Lorr.: RR, probably widespread
and more common.
Lit.: Di: 48-49, L2: 92, NL84: 12, NL92: 167, NL97: 44,
van den Boom & Sérusiaux (1996: 22).
bagliettoana (A. Massal. & De Not.) Jatta
Syn.: B. muscorum (Ach.) Mudd
Over mosses and plant debris on calcareous rocks.
B Mosan: AR. L Lorr.: AR.
Lit.: Di: 47, Ertz: 18, NL84: 12.
beckhausii Körb.
Corticolous, always on Fraxinus, in well-preserved
forests.
B Lorr.: R. L - .
Lit.: L2: 92.
biatorina (Körb.) Vain.
Corticolous, mainly on old Quercus, usually in
well-preserved forests, rarely along roads.
B Mosan: RRR, Ard.: AR, Lorr.: AR. L Lorr.: RR.
F Lorr.: RR.
Lit.: Di: 50-51, L2: 92, NL92: 168.