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Sequences of the nrDNA internal transcribed spacer (ITS) region and the cpDNA trnL/trnF intergenic spacer (IGS) region were analysed for 67 representative species of 54 genera of Compositae-Anthemideae to ascertain the systematic position of the three unispecific Mediterranean genera Brocchia, Endopappus and Heliocauta. For Brocchia cinerea, which was considered to be closely related to Cotula due to its 4-lobed corolla of disc florets, a position among Mediterranean genera clearly distinct from Cotula but with unresolved sister group relationships is demonstrated. For Endopappus macrocarpus a close relationship with Tripleurospermum was suggested due to similarities in achene morphology; the molecular data, however, support its position distinctly distant from Tripleurospermum and among genera with a western Mediterranean centre of distribution characterized by a 5bp deletion in the trnL/trnF IGS. For Heliocauta atlantica, which was hitherto placed in the vicinity of Hippolytia from central Asia, the molecular data reveal its sister group relationship with the strictly Mediterranean genus Anacyclus. First efforts are made to date the diversification of members of the tribe based on sequence divergence rates (c. 1 % = 0.75 Myr) and assuming an origin of the tribe in the Middle Oligocene (c. 25 Myr). It is concluded that lineages within the clade of Mediterranean and Eurasian representatives characterized by a 17bp deletion in ITS2 diverged in the Middle Miocene (c. 15 Myr).
The delimitation and tribal subdivision of the Boraginaceae are discussed, and a synonymic survey of the genera accepted for the purpose of the Euro+Med Project is presented. Three new combinations at subspecies rank are validated in the genera Aegonychon, Cynoglottis and Myosotis.
For the purpose of the Euro+Med Project, Liliaceae are defined in the traditional Englerian sense. Similarly, the splitting of Scilla s.l. in dozens of genera, that has recently been advocated, is not being followed. As a result, eight species originally described under Prospero are transferred to Scilla. Three further new combinations are validated in Scilla, Urginea and Fritillaria.
The American grass species Bouteloua gracilis has been found for the first time in Europe as a more or less established alien on rocky talus slopes near Palafolls (NE Spain). The species is described and depicted and its local ecology and origin are discussed.
Continuing a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to the Med-Checklist project are presented, this instalment deals with the families Aceraceae, Boraginaceae, Caryophyllaceae, Compositae, Dipsacaceae, Euphorbiaceae, Leguminosae, Sapindaceae, Violaceae; Cyperaceae, Gramineae, and Liliaceae. It includes new country and area records, taxonomic and distributional considerations. The names of two new species are validated in Festuca.
In the frame of a wider research project, an inventory of 147 alien vascular plant taxa of the urban and suburban area of the city of Thessaloniki, N Greece is presented. The floristic checklist is based on extensive recent field work in 26 selected collection sites of four development sectors of the metropolitan area of the city. Each taxon recorded is given with information concerning its life-form and chorology (critically compiled as origin and current total distribution, given separately when possible), previously reported occurrence in the area, biotopes (semi-natural, anthropogenic), distribution in the investigated area and quantitative estimation of its presence per collection site. The most abundantly found taxon is Solanum elaeagnifolium, followed by Ailanthus altissima, Cynodon dactylon, Crepis sancta, Diplotaxis tenuifolia, Amaranthus retroflexus and Sporobolus indicus. The annotated checklist includes earlier reports for 62 taxa and furnishes at least 85 new records for the flora of Thessaloniki. Among them are 37 taxa not given for Greece in Flora Europaea and 16 taxa not given for Greece in the Med-Checklist.
Data on the flora and vegetation of seven offshore islets of Kithira Island (Prasonisi, Megali Dragonera, Antidragonera, Kapelo, Avgo, Megalo Strongilo and Lidia) are presented. 145 vascular plant taxa (species and subspecies) are reported, of which all but three are new records for these islets. The observed vegetation units and habitat types are briefly described and the ecological value and biogeographical importance of the area are identified for conservation purposes and discussed.
31 records of native, adventive and cultivated taxa of flowering plants new to Kithira and new localities for 36 taxa rare on this island are presented. The family Tetragoniaceae and the genera Cerinthe, Eleocharis, Lepidium, Tetragonia and Xanthium are reported for the first time from the island, the presence of the genus Mentha is confirmed and new localities for the rare local endemic Polygala helenae are reported. Morphological, chorological, ecological and other data are included for most of the taxa.
The African endemic Chloris lamproparia is excluded from the genus Chloris and placed in the new, monotypic genus Stapfochloa. Its morphological characteristics and the decisive grain shape, which is not known from the related genera Chloris and Tetrapogon, are illustrated.
Peucedanum isauricum is described as a species new to science and illustrated. Its taxonomic position in P. sect. Palimbioidea close to P. graminifolium of N Turkey and the more distantly related P. spreitzenhoferi of the Levant is discussed. P. isauricum stands out in combining a junciform-polygonoid habit with heteromorphic, in their majority grass-like leaves. Light-microscopic photographs of transverse sections and SEM photographs of mericarps of P. isauricum and P. spreitzenhoferi are presented. P. isauricum is considered a neo-endemic and only recorded from a very localised range in the western Central Taurus near Demirtaş, Antalya province, Turkey.
Three S Anatolian Poaceae species, Oreopoa anatolica, Secale leptorhachis and Stipa cacuminis are described as new to science, illustrated and mapped. To accommodate the first, perennial species, a new genus, Oreopoa, with unsettled affinities within the Poeae, is established. The synecology, distribution patterns and relationships of all species are outlined. In addition, considerable range extensions of five grasses, Bromopsis tomentella subsp. nivalis, Festuca cataonica, F. karsiana, F. punctoria and Koeleria brevis, towards the S Anatolian Taurus Mts are reported.