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

156 P. DIEDERICH & E. SÉRUSIAUX
gennarii Bagl.
Syn.: R. demissa auct., R. salina Degel., R. subexigua
(Nyl.) H. Olivier
On calcareous, natural and artificial substrates, incl.
rocks, walls, mortar, particularly common in
rather nutrient-enriched situations.
B Mar., Fl.: C, Brab.: RRR, Mosan: AR, Ard.: RR.
L Ard.: RR, Lorr.: RR.
Lit.: Mü1: 157, NL84: 17, NL92: 162, NL93: 46, VGH:
114, Giralt et al. (1997: 124-127).
griseosoralifera Coppins
Corticolous on neutral to basic bark of deciduous
trees (Malus and Pyrus).
B - . L Ard.: RRR, Lorr.: RR.
Lit.: Di: 204-205, L5: 40-41, NL92: 173, Giralt et al.
(1997: 127-128).
immersa (Körb.) Arnold
On dry and sunny, calcareous rocks, in natural
conditions.
B Mosan: RR. L - .
Lit.: Ertz: 20, NL84: 17, NL97: 55, Giralt et al. (1997:
128-129), Mayrhofer (1984: 423).
interpolata (Stirt.) Sheard
On vertical to slightly overhanging, siliceous rocks
in a disused quarry.
B Ard.: RRR. L - .
Lit.: L4: 30, L6: 145-146, NL92: 162-163 (specimen
refers to R. sicula), Giralt et al. (1997: 129-130).
lecanorina (A. Massal.) A. Massal.
Syn.: R. ocellata (Hoffm.) Arnold
On calcareous rocks in open habitats, mostly on
horizontal or sloping surfaces, always in natural
habitats.
B Mosan: AR. L - .
Lit.: Ertz: 20, NL84: 17, NL97: 55, Giralt et al. (1997:
130-131), Mayrhofer (1984: 431).
occulta (Körb.) Sheard
On natural, siliceous outcrops, in slightly sheltered
conditions.
B - . L Ard.: RRR.
Lit.: Giralt et al. (1997: 131-132).
oleae Bagl.
Corticolous on Betula, Populus, etc., or on exotic
conifers, and on decorticated wood; a mainly
maritime species which occurs mostly in nutrientenriched
or dusty locations.
B Mar.: AR, Fl.: AR, Camp.: RR. L Lorr.: RRR.
This species could represent corticolous populations
of R. gennarii; this matter requires further studies.
Lit.: Giralt et al. (1997: 132-134).
oxydata (A. Massal.) A. Massal. s. l.
Syn.: R. discolor (Hepp) Arnold, incl. R. vezdae H.
Mayrhofer
Mostly on siliceous rocks along streams in moderately
shaded and sheltered situations.
B Mosan: RRR (1891), Ard.: RRR (1966). L Ard.:
RR.
Lit.: NL92: 163, Giralt et al. (1997: 134-136), Mayrhofer
(1984: 448).
pityrea Ropin & H. Mayrhofer
On a dusty, decorticated part of an old Acer along a
road.
B Mosan: RRR. L - . Probably overlooked.
Lit.: NL97: 32.
pyrina (Ach.) Arnold
Corticolous, on isolated trees, e. g. on Aesculus and
Tilia.
B Mosan: RRR, Lorr.: RRR. L Lorr.: RR.
Lit.: Di: 205, L5: 41, Mü1: 157 (B Ard.: to be checked),
NL97: 55, Giralt et al. (1997: 137-138).
sicula H. Mayrhofer & Poelt
On a vertical sandstone rock, in a sheltered and
shaded, natural habitat.
B - . L Lorr.: RRR.
Lit.: Giralt et al. (1997: 138-141).
teichophila (Nyl.) Arnold
On exposed, calcareous rocks in natural conditions.
B Mosan: RRR (1962). L - .
Outside of the study area, this species is also known
from siliceous rocks, brick, mortar, etc.
Lit.: Giralt et al. (1997: 142-144).
tunicata H. Mayrhofer & Poelt
On exposed, calcareous rocks, in natural habitats.
B Mosan: RR. L - .
Lit.: Giralt et al. (1997: 144-146), Mayrhofer (1984: 470).
arenaria (Hepp) Arnold. This species was reported from B
Ard. by Mü3: 47. It is not clear if this refers to R.
badiella of which R. arenaria is a synonym, to R.
teichophila (syn. R. arenaria auct.), or if it represents a
misidentification.
atropallidula Arnold. Reported from B Mosan by BDL2: 39,
but no material seen. A name of uncertain application.
badiella (Nyl.) Th. Fr. The only report of this species from
the study area (B Ard., L4: 30) is erroneous (fide Giralt et
al. 1997: 104); the material most probably represents a
still unidentified species.
confragosa (Ach.) Körb. Reported from B by DG: 39 and
from L Lorr. by Ko: 202, but no material seen. The species
exists in D Ard. (Manderscheid).
demissa auct., see R. gennarii