Table of Contents

The third part of the results of a floristic investigation of Cyprus is presented, including 85 species. One species is new for Cyprus: Saccharum sponraneum. Two new combinations are made: Bellevalia pieridis and Bromus scoparius subsp. chrysopogon. 34 taxa are reported as new to some of the eight botanical divisions of Cyprus.

Trichosfomopsis aaronis, previously known in Europe only from Spain, and T. ausfralasiae, previously known in Europe from Spain, Belgium, and Greece, have recently been collected for the first time in Sicily. The genus Trichosfomopsis is new for the Italian bryoflora.

Hieracium baeticum is a triploid (2n = 27) species restricted to Iimestone mountains in Sand E Spain. Both developing capitula and root tips from seedlings were used for the study. The karyotype suggests an allopolyploid ori gin of the taxon, and a relative close affinity between its parental is indicated by the possibility of partial pairing of most chromosomes during microsporogenesis. This process is completely disturbed starting from the first phases to degenerative pollen forrnation: none is forrned or shed. In more than 60 % of the flowers, some kind of synapsis occurs in pollen mother cells, while there is total univalence in the rest. The species is considered strictly agamosperrnous in ali the studied populations.

Phycopeltis epiphyton, a trentepholiaceous green alga forrning dark spots on the trunks of Buxus sempervirens has been found in NE Spain. Ecology and distribution are discussed.

Tortula papillosa is recorded for the first time from Sicily; and a new locality for Tortula pagorum is given. Brief chorological and ecological remarks on the species are provided

Seed coat sculpturing in Orobanche sect. Orobanche and sect. Trionychon is discussed in relation to taxonomy. Four different groups are recognized, depending on outer seed wall ornamentation: interweaving fibrillar, smooth, pitted and papillate. The branched taxa of O. sect. Trionychon can be separated from members of O. sect. Orobanche by their distinct interweaving fibrillar sculpturing, although some non-branched variants have seed sculpturing similar to that found in O. sect. Orobanche. The presence of smooth and pitted sculpturing in O. sect. Orobanche suggests the recognition of two taxonomic groups.

As a result of the floristic investigations carried out between 1990 and 1993, 846 taxa, belonging to 435 genera and 101 families, are listed. The flora is characterized by the predominance of Mediterranean elements, but the occurrence of euro-asialic species, even al low altiludes, is favoured Iocally by colder microclimales. Several species of phytogeographic inleresl, or new lo Ihe Calabrian flora, are reporled. A more efficient proleclion is needed in order IO fully preserve the area.

The distribution of Solanum physalifolium var. nitidibaccatum and Solanum sarrachoides in Spain is described. These alien species are noI included in any Spanish Flora and are nOI menlioned in any European or Medilerranean Flora as occurring in Spain. Both species show marked similarities and were long considered to belong lo a single species, S. sarrachoides; however there are c1ear and precise differences belween Ihem. Useful differenlial characlers, here sludied, are found among morphological (size and forrn of cOlyledons, size and form of calyx, pubescence, elc .), micromorphological (microstructure of Ihe berry, of the episperm, of the types of hairs, elc), physiological (band palterns obtained by electrophoresis) and ecological fealures.

Thirty-five species of Caliciales (Iichenized Ascomycétes) are reported from Calabria (S. Italy). The following genera are represented: Calicium , Chaenotheca , Chaenothecopsis, Cyphelium, Microcalicium, Mycocalicium, Sclerophora, Sphaerophorus and Sphinctrina. Seventeen tax a are new to Calabria; two, Chaenotheca brachypoda and Chaenothecopsis treicheliana, are new to Italy. Distribution maps for Calabria are provided, and the ecology of each species is discussed.

Acrothamnion preissii, a species from waters off Australia and Japan, is reported for the first time off the northern coast of Mallorca (Balearic Islands) and for the fourth time in the Mediterranean Sea, indicating its progressive spread in the area. The Spanish specimens are described and compared with specimens from other Mediterranean localities.

A new species, Erodium birandianum, is described and illustrated from Kastamonu (NW Anatolia). Il is related to E. absinthoides subsp. armenum. Among some recent1y col1ected specimens of Erodium from Kastamonu, Yara1igiiz Mountain , those was one that cannot be identified with any of the species included in Flora of Turkey (Davis 1966) or its Supplement (Davis & Tan 1988). Il is here described and named as a species new to science.

Octodiceras fontanum is recorded for the first time in Sicily. The ecology, chorology and taxonomy of this rare moss are discussed.

A new species of Crassula, C. basaltica, is described from MI. Etna in Sicily. It occurs in ephemeral communities of dwarf plants, on basaltic rocks. Its relationship with C. tillaea is discussed.

Herbarium specimens and living material of some populations belonging to Allium obtusiflorum s. l. have been investigated. Three closely related species are recognized: A. obtusiflorum DC. from Sicily, A. erythraeum Griseb. from Macedonia (N Greece) and A. thessalicum sp. nov. from Thessaly (C Greece). Their taxonomy, karyology, leaf anatomy and relationships are discussed.

During researches on the flora of the calcareous territory of Sassari (North-western Sardinia), Artemisia variabilis Ten. has been found. Some systematic, chorological and ecological observations on Sardinian populations are given.

The study of the type material of Asphodelus ayardii Jahand. & Maire (Asphodelaceae) indicates that this is the correct name for A. cirerae Sennen, one of the three species of A. sect. _Verinea. _

The discovery of Arctotheca calendula in the Lipari Islands (NE of Sicily) is reported. This species, a native of South-Africa, is already well naturalized in Portugal and Spain, and is spreading around the mediterranean basin assisted by the movement of campers

Bromus alopecuros, similar to B. lanceolatus is reported [or the first time from Portugal. A comparative morphological study of the taxa of this group has been carried ou!. Bromus alopecuros presents mainly Mediterranean distribution, and is accepted as consisting of two subspecies. In one of these, a new combination is proposed.

In the Apuan Alps (NW Tuscany) several pIant species occur as popuIations that are morphologically, genetically andecologically distinct. Such natural groups, in formai taxonomy, are best treated at subspecific rank. Taxonomic considerations and nomenclatural adjustments are here presented for a number of taxa in the genera Carum (Umbelliferae), Buphthalmum (Compositae), Rhinanthus (Scrophulariaceae), Astrantia (Umbelliferae), and Asperula (Rubiaceae).

The new species includes Cerastium hirsutum Ten., nom. illeg. A specimen in Munich is designated as type of Cerastium scaranii Ten.

This is the fourth instalment of a series of reports of chromosome numbers from Mediterranean area, peri-Alpine communities and the Atlantic Islands, in French or English language. It comprises contributions on 95 taxa: Acinos, Calamintha, Hyssopus, Lycopus, Melittis, Mentha, Sideritis, Thymus and Ziziphora from Bulgaria, by M. Markova & V. Goranova (Nos. 240-266); Bupleurum from Greece and Italy, Hermodactylis, Asphodeline, Crocus, Lolium and Primula from Greece and Crete, by S. Snogerup (Nos. 267-284); Papaver and Carex from Bulgaria, by M. Stoeva (Nos. 285-293); Allium, Asparagus, Carlina, Carthamus, Daucus, Echinops, Glaucium, Onobrychis, Onopordum, Pancratium, Platanus, Rhamnus, Salsola, Scolymus, Teucrium, Trifolium, Urginea, Verbascum and Zygophyllum from Cyprus, by C. Oberprieler & R. Vogt (Nos. 294-312); Alisma, Allium, Amaranthus, Asparagus, Bryonia, Butomus, Calystegia, Cicer, Circaea, Colchicum, Cornus, Datura, Elodea, Erodium, Ferulago, Frangula, Geum, Gratiola, Herniaria, Humulus, Impatiens, Lavatera, Lonicera, Oenanthe, Parietaria, Periploca, Pimpinella, Plantago, Ranunculus, Rapistrum, Ribes, Rubia, Saponaria, Scilla, Scrophularia, Sternbergia, Syringa, Viburnum and Urtica from Bulgaria, by I. V. Ceshmedziev (Nos. 313-366); Luzula from Spain, Switzerland, Bulgaria, CO, LU, by .M. Garcia-Herran (Nos. 367-370); Hordeurn from Switzerland, by F. Felber & D. Savova (No. 371); Pituranthos, Calendula, Carlina and _Rhanteriu...