Search results for "sistematica"

showing 10 items of 815 documents

Segnalazioni floristiche e vegetazionali per le zone umide costiere del territorio di Petrosino (Sicilia occidentale)

2017

Si riportano popolazioni inedite di alcune specie di angiosperme rare per il territorio siciliano, localizzate nelle aree umide costiere del territorio di Petrosino (provincia di Trapani), attualmente tutelate come sito della rete europea “Natura 2000” (codice ITA010006), e come zona “Ramsar”: si tratta nel dettaglio di Apium graveolens, Briza minor, Carex extensa, Cladium mariscus, Euphorbia hirsuta, Ipomoea sagittata, Ruppia drepanensis, Sonchus maritimus. Per ogni specie viene brevemente illustrata l’importanza dei nuovi reperti nel contesto regionale. Viene inoltre segnalata la presenza di un habitat prioritario non censito nel piano di gestione del sito Natura 2000, ossia “7210*: Palud…

Sicily; flora; vegetation; floristics; wetlands; conservation; Natura 2000; Ramsar area; Habitats Directive; priority habitatsfloristicSettore BIO/02 - Botanica SistematicaconservationwetlandfloraHabitats DirectivevegetationRamsar areaSettore BIO/03 - Botanica Ambientale E Applicatapriority habitatsNatura 2000Sicily
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A new species of Smyrnium (Apiaceae) related to S. perfoliatum

2015

On the basis of plant collections recently carried out in Sicily as well as the study of the herbarium material kept in PAL and PAL-Gr, a new species of Smyrnium (Apiaceae) is described here. This new taxon, named Smyrnium dimartinoi, is related to S. perfoliatum and is presently known from Sicily, Crete and realistically elsewhere in the Mediterranean. In such range it occurs in open woods and clearings of the Mediterranean-temperate and submontane belt.

Smyrnium taxonomy vascular plants Sicilian flora European floraApiaceaebiologySettore BIO/02 - Botanica SistematicaBotanyPlant Sciencebiology.organism_classificationSmyrniumFlora Mediterranea
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53a Escursione sociale, Sicilia orientale, 3-5 Giugno 2011

2013

Società Botanica Italiana Flora d'Italia SiciliaSettore BIO/02 - Botanica SistematicaSettore BIO/03 - Botanica Ambientale E Applicata
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First data on the taxonomic diversity of the Portulaca oleracea aggregate (Portulacaceae) in Iran

2017

The review of specimens from Iran belonging to the Portulaca oleracea L. aggregate resulted in the recognition of six microspecies: P. cypria Danin, P. granulatostellulata (Poelln.) Ricceri & Arrigoni, P. nitida (Danin & H.G.Baker) Ricceri & Arrigoni, P. rausii Danin, P. socotrana Domina & Raimondo, and P. trituberculata Danin, Domina & Raimondo, all reported for the first time for the flora of Iran. The identification was based on the microscopic study of seeds. It is noted that P. oleracea is not confirmed for Iran. Distribution data and an identification key for Portulaca microspecies in Iran are presented.

SocotranaMiddle eastSettore BIO/02 - Botanica SistematicaIdentification keyPlant ScienceBiologyPortulacaIranbiology.organism_classificationPurslaneFloristic investigationIranmicromorphologypurslaneMiddle EastBotanySettore BIO/03 - Botanica Ambientale E ApplicataMicromorphologyPortulacaceaeFloristic investigation
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Citizen science: uno strumento di successo per monitorare le specie aliene marine. Il caso studio nelle acque della Sicilia (Mediterraneo centrale)

2019

L’introduzione di specie non indigene invasive (IAS, organismi introdotti in aree esterne al loro areale naturale con comportamento invasivo) è considerata una delle maggiori minacce alla biodiversità e al funzionamento degli ecosistemi naturali (Katsanevakis et al. 2014, Vergeś et al. 2016). Una specie non-nativa (NIS) può diventare invasiva e causare perdita di biodiversità e cambiamenti nei servizi ecosistemici (Giakoumi 2014, Vergés et al. 2016). Nel Mediterraneo oggi sono presenti circa 1.000 NIS, delle quali 134 sono macroite (Verlaque et al. 2015, Alós et al. 2016). Per ridurre il rischio di future introduzioni e meglio comprendere il potenziale invasivo e le dinamiche di diffusione …

Specie aliene marine Citizen Science monitoraggio SiciliaSettore BIO/02 - Botanica SistematicaSettore BIO/03 - Botanica Ambientale E Applicata
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Piante invasive e ripercussioni su paesaggio e beni architettonici: il caso di Ailanthus altissima (Simaroubaceae)

2009

L’espansione di specie vegetali invasive sembra essere legata al diffuso degrado ambientale del territorio – da anni sottoposto a una forte pressione antropica – e alla contestuale caduta di barriere geografiche che ha prodotto spostamenti di espressioni floristiche particolarmente aggressive nelle più diverse direzioni. Ai vari livelli, il fenomeno è sottostimato malgrado costituisca un grande pericolo per l’integrità del paesaggio, per il contesto urbano, i giardini storici e i siti monumentali all’aperto; esso, indirettamente, rappresenta anche una minaccia per la biodiversità sottraendo spazio alle specie più sensibili e modificandone l’habitat. Nel contingente di specie invasive, in Eu…

Specie avventizie flora SiciliaSettore BIO/02 - Botanica Sistematica
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Allium kyrenium (Amaryllidaceae), a new species from Northern Cyprus.

2015

Allium kyrenium, a new species of Allium sect. Codonoprasum, is described and illustrated from northern Cyprus. It is a very circumscribed geophyte growing on the calcareous cliffs of the Kyrenia range. This diploid species, with a somatic chromosome number 2n = 16, shows close morphological relationships with A. stamineum, a species complex distributed in the eastern Mediterranean area. Its morphology, karyology, leaf anatomy, ecology, conservation status and taxonomical relationships with the allied species belonging to the A. stamineum group are examined.

Species complexAllium sect. Codonoprasum eastern Mediterranean karyology leaf anatomy taxonomybiologySettore BIO/02 - Botanica SistematicaKaryotypePlant ScienceAmaryllidaceaebiology.organism_classificationEastern mediterraneanBotanyConservation statusAlliumTaxonomy (biology)PloidyEcology Evolution Behavior and Systematics
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Morphologically similar but not closely related: the long-spored species of Subulicystidium (Trechisporales, Basidiomycota)

2020

AbstractSpecies boundaries and geographic distribution of corticioid fungi (resupinate Basidiomycota) are often poorly known. Our recent study on Subulicystidium showed that species diversity in this genus is at least twice as high as previously recognized. This re-estimation of the species diversity was based on a study of only a part of the genus. The present study sheds light on molecular and morphological diversity of three more species. We generated 27 ITS and 24 28S nuclear ribosomal DNA sequences from 49 specimens labelled as Subulicystidium cochleum, S. longisporum and S. perlongisporum and collected in distant geographic localities. We assessed pairwise dissimilarities and phylogen…

Species complexPhylogenetic treeSettore BIO/02 - Botanica SistematicaSpecies distributionSpecies diversityBiologybiology.organism_classificationAgricultural and Biological Sciences (miscellaneous)AgaricomycetesCryptic species Genetic distance Homoplasic character Internal transcribed spacer Large subunit traditional morphometricsCorticioid fungiGenusEvolutionary biologyRibosomal DNAEcology Evolution Behavior and SystematicsMycological Progress
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CRYPTIC SPECIES RELATED TO DALDINIA CONCENTRICA AND D. ESCHSCHOLZII, WITH NOTES ON D. BAKERI

2004

Daldinia macaronesica (from the Canary Islands and Madeira), D. palmensis (from the Canary Islands), D. martinii and D. raimundi (from Sicily), and D. vanderguchtiae (from Jersey, Channel Islands) spp. nov., are described, based on new combinations of teleomorphic and anamorphic characters. They all resemble the pantropical D. eschscholzii and/or the European D. concentrica with regard to teleomorphic characters and secondary metabolite profiles generated by analytical HPLC. The status of the newly described taxa was established by SEM of ascospores and microscopic studies of their anamorphs in comparison with various materials of the aforementioned known species. HPLC and SEM studies on th…

Species complexbiologyXylarialesSettore BIO/02 - Botanica SistematicaHolotypePantropicalPlant SciencePigments BiologicalSpores Fungalbiology.organism_classificationEuropeTaxonChemotaxonomyBotanyDaldinia concentricaGeneticsMicroscopy Electron ScanningTaxonomy (biology)Type specimenMycological Typing TechniquesCryptic species Daldinia AscomycetesEcology Evolution Behavior and SystematicsChromatography High Pressure LiquidBiotechnology
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Sorbus busambarensis (Rosaceae), a new endemic species of Sicily

2012

Abstract In this study, Sorbus busambarensis, a new species from Rocca Busambra (Palermo, NW Sicily) has been described and named. On the basis of the critical features of its flowers, fruits and leaves, it is noted to be a member of S. sect. Aria and is related to the other taxa that form the polymorphic group of S. aria, which in Sicily is represented by S. aria s. str., S. graeca and S. umbellata.

SpiraeoideaeSorbusTaxonbiologySpiraeoideae Sorbus aria group Italian flora Sicilian endemics taxonomy.Settore BIO/02 - Botanica SistematicaRosaceaeBotanyTaxonomy (biology)Plant Sciencebiology.organism_classificationEndemismEcology Evolution Behavior and SystematicsPlant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
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