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

166 P. DIEDERICH & E. SÉRUSIAUX
calcareum var. belgicum (Hue) Zahlbr., syn. Verrucaria
calcivora Nyl. var. belgica Hue. Described from B
Mosan (type locality) by Hue (1898), but no material
seen. A name of uncertain application.
dionantense var. lecideiforme (Hue) Zahlbr., syn. Verrucaria
dionantensis Hue var. lecideiformis Hue. Described
from B Mosan (type locality) by Hue (1898) (see also
Zschacke 1933: 379), but no material seen. A name of
uncertain application.
erichsenii Keissl., see Normandina acroglypta
flandricum B. de Lesd. Described from F Fl. (type locality)
(see also Zschacke 1933: 365), but no material seen. A
name of uncertain application.
halodytes (Nyl.) Erichsen, see Pyrenocollema halodytes
immersum (Leight.) Mudd, see T. decipiens
leightonii M. Choisy, see T. decipiens
margaceum (Leight.) Zschacke, see T. minutulum
mesotropum (Nyl.) A. L. Sm., see T. minutulum
pertusulum (Nyl.) B. de Lesd., see Polyblastia pertusula
pyrenophorum (Ach.) Mudd. Reported from B Mosan by
BDL2: 44, but no material seen.
spadanum B. de Lesd. Described from B Ard. (type locality)
by BDL2: 43 (see also Zschacke 1933: 365-366), but no
material seen. A name of uncertain application.
tongletii (Hue) Zahlbr., syn. Verrucaria tongletii Hue.
Described from B Mosan (type locality) by Hue (1898)
(see also Zschacke 1933: 379), but no material seen. A
name of uncertain application.
THELOCARPON Hue
coccosporum Lettau
On an exposed, horizontal surface of a sandstone
rock, in natural conditions.
B - . L Lorr.: RRR (near Luxembourg).
Lit.: L8.
depressellum Vain.
On an exposed, sandstone rock, in natural conditions.
B - . L Lorr.: RRR (near Berdorf).
Lit.: L8.
*epibolum Nyl.
On an old thallus of Peltigera, and on plant detritus.
B Mosan: RRR, Ard.: RR. L Lorr.: ?RR.
The identity of both Luxembourg collections
referred to this species is not entirely certain, as
the asci were immature, without ascospores.
Lit.: Di: 219, L4: 33, NL97: 56.
intermediellum Nyl.
Syn.: T. intermixtulum Nyl.
On decorticated wood of Quercus.
B - . L Ard.: RRR.
Lit.: Di: 219-221, L4: 31.
laureri (Flot.) Nyl.
On burnt Pinus wood and Molinia stump in heathland.
B Camp.: RRR. L - .
Lit.: L8.
lichenicola (Fuckel) Poelt & Hafellner
On soil and bryophytes in well-lit situations.
B Mosan: RRR. L Ard.: RRR.
Lit.: L5: 42.
strasseri Zahlbr.
On rotting trunk lying in forest.
B Ard.: RRR. L - .
Lit.: L8.
intermixtulum Nyl., see T. intermediellum
THELOMMA A. Massal.
ocellatum (Körb.) Tibell
Lignicolous, on the top of a fence post.
B - . L Ard.: RRR.
Lit.: L7: 90.
THELOTREMA Ach.
lepadinum (Ach.) Ach.
Corticolous, mainly on Carpinus, Fagus and
Quercus in humid and well-preserved forests.
B Mosan: RR, Ard.: AR, Lorr.: RRR. L Ard.: RRR,
Lorr.: AR.
Lit.: Di: 221, Vanek (1976).
THERMUTIS Fr.
velutina (Ach.) Flot. This species was mentioned from B
Ard. by Mü5: 25 on a wooden fence; this report is most
dubious, as the species is always saxicolous.
THROMBIUM Wallr.
epigaeum (Pers.) Wallr.
On soil in ruderal conditions or over siliceous rocks.
B Ard.: RRR. L Ard.: RR, Lorr.: RRR.
Lit.: L5: 42-43, NL97: 56.