Page 15 - escursioni_A
P. 15
Itineraries
Also the chasmo-chomophytic and epiphytic moss- and fern-commu-
nities (POLYPODIETEA) are well represented with the association Ano-
grammo leptophyllae-Selaginelletum denticulatae (POLYPODION SERRATI).
The chasmophytic vegetation of local undisturbed base-rich
rocky cliffs (DIANTHION RUPICOLAE) is ascribed to Bupleuro
dianthifolii-Pseudoscabiosetum limonifoliae at Marettimo and to Sca-
bioso creticae-Centauretum ucriae elsewhere; several subassociations
characterised by local narrow endemics are recorded in this area, i.e.
helichrysetosum straminei at Zingaro, ericetosum siculae at Mt. Cofano,
brassicetosum drepanensis on the top of Zingaro Mts., brassicetosum ma-
crocarpae on Egadi Islands. Plenty of interesting plants may co-occur
on the same site, not only the above-mentioned narrow endemics, but
also Sicilian endemics like Anthemis cupaniana, Cymbalaria pubescens,
Helichrysum panormitanum subsp. latifolium, etc., circum-Tyrrhenian
endemics such as Asplenium petrarchae subsp. petrarchae, Convolvu-
lus cneorum, Dianthus rupicola subsp. rupicola, Glandora rosmarinifolia,
Hyoseris taurina, Iberis semperflorens, Senecio cineraria subsp. bicolor, Se-
seli bocconei, etc., and other very rare plants like Phagnalon metlesicsii,
only occurring on Mt. Cofano and at Lanzarote in Canary islands.
Several communities linked to rock crevices (ASPLENIETALIA
LANCEOLATO-OBOVATI), such as Phagnalo saxatilis-Cheilanthetum
maderensis and Cosentinietum bivalentis occur at Levanzo and Maret-
timo, while the chasmo-nitrophilous vegetation of disturbed rocky
cliffs and stone walls (CYMBALARIO-PARIETARIETEA DIFFUSAE)
is locally represented by numerous communities referred to CYMBA-
LARIO-ASPLENION (e.g. Sedo dasyphylli-Ceterachetum officinarum)
and ARTEMISION ARBORESCENTIS-CAPPARIDION SPINOSAE
(Capparidetum rupestris, Centranthetum rubri, Hyoscyamo albi-Parieta-
rietum judaicae and Antirrhinetum siculi).
The pioneer assemblages typical to local screes (Sedo sedifor-
mis-Centranthetum rubri), rather common on Mt. Inici, Mt. Sparagio,
Mt. Palatimone, Mt. Monaco, Marettimo island, belong to the ende-
mic alliance EUPHORBION RIGIDAE.
Hydro-hygrophilous vegetation
The streamlets of the locality called ‘Acci’ (= Apium in Sicilian
dialect) in the northern part of Zingaro reserve host several hy-
grophilous communities dominated by few rhizomatous helophites
64