Allium albanicum (Amaryllidaceae), a new species from Balkans and its relationships with A. meteoricum Heldr. & Hausskn. ex Halácsy

A new species, Allium albanicum, is described and illustrated from Albania (Balkan Peninsula). It grows on serpentines or limestone in open rocky stands with a scattered distribution, mainly in mountain locations. Previously, the populations of this geophyte were attributed to A. meteoricum Heldr. & Hausskn. ex Halácsy, described from a few localities of North and Central Greece. These two species indeed show close relationships, chiefly regarding some features of the spathe valves, inflorescence and floral parts. They also share the same diploid chromosome number 2n =16 and similar karyotype, while seed testa micro-sculptures and leaf anatomy reveal remarkable differences. There are also several morphological features that allow them to be differentiated at specific level. The inclusion of both species into a newly described section Pseudoscorodon of the subgen. Allium is proposed. An analytic key to the species, included in the new section, is also provided

Taxonomic revision of the Astragalus genargenteus complex (Fabaceae)

Within the Astragalus genargenteus complex three morphologically, ecologically and chorologically well differentiated taxa are distinguished: A. genargenteus from siliceous substrate in the Gennargentu massif (central Sardinia) and two species described as new to science, A. gennarii from limestone on Monte Albo (NE Sardinia) and A. greuteri, widespread on siliceous substrate in the Corsican mountains. The relationship of these species with the allied, spine cushion-like A. sirinicus and A. angustifolius is examined. A key to the species and illustrations are given

Taxonomical and chorological remarks on the Mediterranean Poa maroccana (Poaceae) and the first record in Italy from the Sicilian flora

Poa maroccana is an annual Mediterranean species, which is recorded for the first time from Sicily and for the entire territory of Italy. It usually occurs in synanthopic habitats, represented mainly by urban and suburban roadsides, where it is quite sporadic. Based on current knowledge, it has been hitherto reported only in a few localities of the Mediterranean area, specifically in Morocco, Algeria, Tunisia, Libya, Spain, Portugal, Greece, Turkey, Syria and Crimea. Field observations and herbarium investigations have shown that this species is often mistaken for P. annua, mainly due to its morphological similarities, as well as for having the same ecological needs, therefore its real geographical distribution has yet to be verified. Although the two species are both tetraploids (2n = 28), they clearly differ in numerous relevant features concerning the shape and size of ligules, inflorescence, spikelet, glumes, palea, lemma, anthers, lodicules and seed. In order to better clarify the relationships of P. maroccana with P. annua and other annual species of this genus occurring in the Mediterranean, a careful morphological description and an iconography are provided, as well as a comparative morphological table of all allied species and also an analytical key for their easy identification

Taxonomic and phylogenetic relations of Allium chamaespathum Boiss., a remarkable species of Balkan Flora

Allium chamaespathum Boiss., the only autumn-flowering species of Sect. Allium, was studied based on morphology, karyology, seed coat microsculpturing and DNA sequences from several populations

Allium oporinanthum (Alliaceae), una nueva especie del Mediterráneo noroccidental

A new species Allium oporinanthum is described from some localities of the NW Mediterranean área. The new species belongs to A. sect. Codonoprasum and is usually localized on limestone in shady rocky places. It is an autumnal species with a tetraploid chromosome number (2n = 32). Its old origin and its taxonomic relationships are examined too.Se describe Allium oporinanthum de varias localidades del Mediterráneo noroccidental. La nueva especie pertenece a la sección Codonoprasum y normalmente se localiza en las rocas calizas umbrosas. Se trata de una especie otoñal con un número cromosomático tretraploide (2n = 32). Además se examina su posible origen y afinidades taxonómicas

Loncomelos koprulense (Asparagaceae), a new species from southern Turkey

A new species, Loncomelos koprulense (Asparagaceae), is described and illustrated from southern Turkey. It is a very rare endemic species growing on small semi-rocky escarpments within the Köprülü Kanyon in the province of Antalya. Morphologically for its hairy leaves, L. koprulense shows some relationships with L. malatyanum and L. tardum, species localized in Anatolia too. The chromosome number of the new species is 2n = 2x = 22. Geographical distribution map for L. koprulense, L. malatyanum and L. tardum is provided

Osservazioni Citotassonomiche Su Scilla Barbacaprae, Endemismo Cirenaico, E Sue Affinita' Con Scilla Villosa

RIASSUNTOViene analizzato il cariotipo di Scilla barba caprae, specie endemica di Derna (Cirenaica settentrionale). Il risultato di questa indagine, effettuata su bulbi coltivati nell'Orto Botanico di Catania, e stato il rinvenimento di un corredo cromosomico diploide: z = 2n = 2x = 14 = 2L + 2M1 + 2M2 + 2M3S3 + 2M4 + 2S1 + 2S2.La comparazione fra Scilla barba-caprae e Scilla villosa, che e la specie tassonomicamente piu vicina, ha permesso di evidenziare numerose differenze riguardanti sia il cariotipo che il fenotipo, che consentono di separare le due entita a livello specifico.In particolare il cariotipo di Scilla villosa (2n = 20) differisce da quello fondamentale 2n= 16, relativo alle entita appartenenti al ciclo di Scilla peruviana, per avere in piu quattro cromosomi, mentre quello di Scilla barba-caprae (2n = 14) ne differisce per avere due cromosomi in meno e per la presenza della coppia 2M3S3 formatasi in seguito a fenomeni di traslocazione + delezione

Contributo alla conoscenza dei boschi a Quercus ilex della Sicilia

In quest° lavoro vengono esaminati i boschi a Quercus ilex presenti in Sicilia.Oltre alle associazioni in precedenza già osservate per questo territorio, viene segnalata per la prima volta la presenza dell'Ostrio-Quercetum ilicis e inoltre sono descritte alcune nuove subassociazioni relative al Querco-Teucrietum siculi e all'Aceri obtusati-Ostryetum carpintfoliae. Ciascuna associazione viene esaminata sotto il profilo syntassonomico, ecologico e sindinamico.In this paper the Quercus ilex woods occurring in Sicily were examined. Apart from the associations previosly observed in this territory, the presence of Ostryo-Quercetum ilicis is reported for the first time; besides some new subassociations of the Querco-Teucrietum siculi and of the Aceri obtusati-Ostryetum curpinifoliae are described. Syntaxonomic, ecological and syndynamic considerations are given for every association

A new species of Hypochaeris L. (Asteraceae, Cichorieae) from Sardinia

Hypochaeris sardoa, belonging to H. sect. Metabasis, is described as a species new to science and illustrated. It occurs on siliceous rocks in southern Sardinia. Its karyology, ecology, chorology and relationship are examined. A key to the species ofH. sect. Metabasis is provided

Calamintha sandaliotica (Lamiaceae) a new species from Sardinia

Calamintha sandaliotica is described as a species new to science and illustrated. It occurs on calcareous rocky crevices in SW Sardinia. Its ecology, chorology and taxonomical relationships are examined. A key to European Calamintha is provided.Se describe e ilustra la nueva especie Calamintha sandaliotica, característica de los acantilados calizos de la parte suroccidental de Cerdeña. Se examina su ecología, corología y las relaciones taxonómicas. Se presenta también una clave para las especies europeas del género Calamintha