Proceedings of the Second Mediterranean Symposium on Marine

PROCEEDINGS OF THE SECOND MEDITERRANEAN SYMPOSIUM ON MARINE VEGETATION (ATHENS, 12-13 DECEMBER 2003)
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Starting point <strong>of</strong> this work was <strong>the</strong> checklist <strong>of</strong> Italian macrophytobenthos (Furnari et al.,
2003); <strong>the</strong> checklists <strong>of</strong> <strong>Mediterranean</strong> seaweeds (Ribera et al., 1992; Gallardo et al.,
1993; Gomez Garreta et al., 2001) and <strong>the</strong> webpage ALGABASE (Guiry, M.D. and Nic
Dhonncha E., 2003) were also consulted in order to assess a preliminary comparison
between historical and recent data. The nomenclature and <strong>the</strong> chorological elements used
in <strong>the</strong> present work follow <strong>the</strong> checklist <strong>of</strong> Italian macrophytobenthos (Furnari et al., 2003).
RESULTS
In <strong>the</strong> list obtained, representative <strong>of</strong> <strong>the</strong> Ligurian flora from 1950 at <strong>the</strong> actual state <strong>of</strong>
knowledge, 243 entities (241 species and 3 varieties) are enumerated. Rhodophyta are
in <strong>the</strong> number <strong>of</strong> 151, Phaeophyta 44 and Chlorophyta 48.
54 <strong>of</strong> <strong>the</strong> listed entities are inedited quotations for Liguria and 35 are not even reported
in <strong>the</strong> list <strong>of</strong> <strong>the</strong> adjacent Tuscany region, where phycological studies have been
continuous in time and 408 taxa at <strong>the</strong> species level have been recorded (Furnari et al.,
2003). Finally 7 <strong>of</strong> <strong>the</strong> above listed species are introduced, according to Verlaque, 1993.
In <strong>the</strong> following list, only comprehensive <strong>of</strong> <strong>the</strong> new records for Liguria (127 entities),
each taxa is presented, toge<strong>the</strong>r with <strong>the</strong> following details:
• <strong>the</strong> chorological element, following Furnari et al., 2003 (C=Cosmopolitan, SC=Subcosmopolitan,
A=Atlantic; AP=Atlantic-Pacific; IA=Indo-Atlantic; IP=Indo-Pacific;
Ab=Atlantic-boreal; APTF=Atlantic-Pacific temperate cold; IAtf=Indo-Atlantic temperate
cold; CB=Circumboreal; CBA=Circumboreo-austral; P=Pantropical; Abt=Atlantic boreotropical;
APt=Atlantic-Pacific tropical; At=Atlantic-tropical; IAt=Indo-Atlantic tropical)
• <strong>the</strong> source <strong>of</strong> record (!=personal communication <strong>of</strong> <strong>the</strong> present authors; T1=Tortonese,
1958; T2=Tortonese, 1961; T3=Tortonese, 1962; R=Relini et al., 1986; B=Balduzzi
et al., 1992; C=Cattaneo-Vietti et al., 2002; HbM=Herbarium Mangialajo; GE= Herbarium
University <strong>of</strong> Genoa; GDOR=Herbarium Natural History Museum “G. Doria”, Genoa).
Rhodophyta
Acrosorium venulosum (Zanardini) Kylin IA ! HbM GE (sub A. uncinatum)
Acrosymphyton purpuriferum (J. Agardh) G. Sjöstedt M ! GDOR T1
Acrothamnion preissii (Sonder) E. M. Wollaston IP ! HbM
Anotrichium tenue (C. Agardh) Nägeli IP !
Asparagopsis armata Harvey C C (sub Falkenbergia rufolanosa)
Bonnemaisonia asparagoides (Woodward) C. Agardh Ab ! HbM
Bornetia secundiflora (J. Agardh) Thuret Ab ! HbM GE GDOR
Botryocladia botryoides (Wulfen) Feldmann IA ! C
Callithamnion granulatum (Ducluzeau) C. Agardh IA ! HbM
Caulacanthus ustulatus (Turner) Kützing SC !
Ceramium ciliatum (J. Ellis) Ducluzeau v. ciliatum AP ! HbM GE
Ceramium circinatum (Kützing) J. Agardh IA !
Ceramium codii (H. Richards) Feldmann-Mazoyer SC !