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The Lichens ot Marettimo (Egadi lslands, Sicily) 255
Falcone, rare ; the chemistry of our sample was Lecanora campestris (Schaerer) Hue- Only
studied by Ch. LEUCKERT; it contains atranorine, found on thin siliceous layers upon dolomite (CLU,
zeorine and bourgeanic acid (GZU).
GZU, TSB).
Heterodermia leucomelos (L.) Poelt - Lecanora cblarotera Nyl.- On bark, boÙl on
Restricted to higher elevations, on the branches of
twigs of shrubs in the macchia and on trunks of
Q. tle.x, and on epiplithic mosses in windy ridges, Ceratonia near the village, less commo n than L.
rubicunda (GZU, PAL, TSB).
evidently very rare (CLU, GZU, TSB).
Heterodermia speciosa (Wulfen) Trevisan - Lecanora crenulata Hooker - On limestone
and dolomite at Semaforo and P.ta Ansini (GZU).
Restricted to Q. ile.xabove 450m, rare (TSB).
Hymenelia prevostii (Ouby) Krempelh. - On Lecanora dispersa (Pers.) Somme rf. - On
limestone in e utrophicated situations , a lso on
calcareous rocks above 450 m, rare (TSB). cement near the village, common (TSB).
Hymenelia similis (Massai.) M. Choisy - On
Lecanora bagenii (Ach.) Acb. - On the bark of
calcareous rocks in rathe r s heltered situations, Ceratonia near lhe village (TSB).
restricted to higher elevations, locall y abundant
(CLU, GZU, TSB). Lecanora boriza (Ach.) Lindsay - Common,
especially on brancbes of shrubs in the macchia
Hyperpbyscia adglutinata (Fiorke) H. Mayrb. (GZU, PAL, TSB).
& Poelt - On eutrophicated bark, especially at the
base oftrunks, n(){ common (GZU, TSB). Lecanora lisbonensis G. Samp . - Locally very
abundan t, always near the coast, also o n cement
lngaderia troglodytica Feige & Lumbsch - A (GZU, TSB).
recently-described, quite interesting spedes (FEIGE
& LUMBSCH, 1993). O n verlical, N-facing surfaces of Lecanora muralis (Schreber) Rabenb. - On
calcareous rocks near the coast, only found at Scalo
Maestro and S. Marino, locally abundant on vertical limesto ne in rather eutrophicated situations, rather
shaded calcareous faces ; probably not uncommon , common (TSB).
but, owing to the peculiar e cology, difficult to reach
(GZU, TSB). Lecanora pruinosa Chaub. - On limesto ne,
very rare (PAL, TSB).
Lecanactis amylacea (Pers.) Arnold - On the
lower side of an old branch of Q. ilex at ca. 350m, Lecanora rubicunda Bagl. - On twigs of
evidently rare (CLU).
Pistacta in the maccchia near the coast, not rare.
Lecanactis grumulosa (Ouf.) Fr. - On steeply This species, characterized by the presence of
norstictic acid, has a western Mediterranean-
inclined to unde rhanging surfaces of calcareous Macaronesian distribution (fSB).
rocks near the coast, very common and variable ;
some samples were growing on Roccella p bycopsis Lecanora sulpburea (Hoffm .) Ach . - On thin
(CLU, GZU, PAL, TSB) . siliceous layers upon dolomite in upland areas, with
Ochrolecbia parella (GZU, TSB).
Lecania cyrtella (Ach.) TI1 . Fr.- On Ceratonia
near the vilbge (TSB). Lecidea lurida Ach. - On soil in fissures of the
rock, quite widespread, but n(){ very abundant (TSB).
Lecania spadicea (Flotow) Zahlbr. - Rather
abundant on more or less exposed calcareous LecideUa acbristotera (Nyl.) Hertel & Leuck. -
rocks, especially near the coast, also on waUs near On Ceratonia near Ùle village of Marettimo (TSB).
the village (GZU, PAL, TSB).
Lecidella elaeocbroma ( Ac h .) Haszl. v.
Lecania turicensis (Hepp) MOli. Arg. - On jlavicans (Ach.) Hertel - Common throughout the
island on bark, except in very shaded and humid
cakareous rocks in eutrophicated situations at Scalo situations (GZU, PAL, TSB) .
Maestro (GZU).
Lecidella elaeocbroma v. soralifera
Lecanora agardbiana Ach. ssp. catalaunica (Erichsen) Clauz. & Roux- Much rarer than the
previous variety (TSB).
Clauz. & Roux - On calcareous rocks, near the
coast (GZU, TSB). Lecidella eupborea (Flo rke) Hertel - On Q.
i/ex at P.ta Ansini (GZU).
Lecanora albescens ( Hoffm .) Branth. &
Rostr. - On horizontal or weakly inclined surfaces Lecidella stigmatea (Ach .) Hertel & Leuck. -
On dolomite near the coast, evidently rare (CLU)
of calcareous rocks, especially near the coast; mese
samples seem to be different from L. a/bescens s. Lepraria nivalis Laundon - On shaded,
str., but the materia! is strongly eaten, and therefore underhanging surfaces of calcareous rocks (CLU,
difficult to assess (GZU, PAL, TSB). TSB, GZU). The GZU sample was analyzed by Cb.
LEUCKERT; it contains atranorine, protocetraric and
Hommage scientifique à G. Clauzade
