Search results for "sistematica"
showing 10 items of 815 documents
A new species of Allium (Alliaceae) from Dalmatia, Croatia
2008
Abstracts, XI OPTIMA meeting .Beograd 5–11. IX. 2004. Belgrade: Natural HistoryMuseum, 122. Brullo S, Guglielmo A, Pavone P, Salmeri C. 2007. Cytotaxonomic considerations on Allium stamineum Boiss.group (Alliaceae). Bocconea 21: 325–343. Diez MJ. 1987. Liliaceae. In: Valdes B, Diez MJ, FernandezI, eds. Atlas Polinico de Andalucia Occidental . Instituto deDesarrollo Regional. Sevilla: Universidad de Sevilla, Exce-lentisima Diputacion Provincial de Cadiz, 379–395. D’Ovidio R, Marchi P. 1990. DNA content, karyotype struc-ture analysis and karyotype symmetry in Ranunculus L.(Ranunculaceae) Italian species belonging to sections Flam-mula (Webb) Benson and Micranthus (Ovcz.) Nyarady. Caryologia 4…
Comparison of Two Schizophyllum commune Strains in Production of Acetylcholinesterase Inhibitors and Antioxidants from Submerged Cultivation
2021
In recent years, fungi have been recognized as producers of acetylcholinesterase (AChE) inhibitors, agents important for the prevention of Alzheimer’s disease (AD). This study aimed to examine the AChE inhibitory, the antioxidative and antibacterial activity of two different Schizophyllum commune strains that originated from Serbia (SRB) and Italy (IT). Submerged cultivation of grown mycelia (M) and fermentation broth (F) of ethanol (EtOH) and polysaccharide (PSH) extracts lasted for 7, 14, 21 and 28 days. For AChE activity Ellman method was performed, while for antioxidative activity, sevendifferent assays were conducted: DPPH, ABTS, FRAP, SOA, OH, NO together with total phenolic content. …
The Checklist of Sicilian Macrofungi: Second Edition
2022
Approximately 30 years after the publication of the first Sicilian checklist of macrofungi, a new updated version is presented here. The census of macromycetes was carried out through periodic observations in different agricultural and forest ecosystems, in urban areas, in public and private gardens, and in botanical gardens. The 1919 infraspecific taxa included in 508 genera belonging to 152 families were collected in the Sicilian territory. Ectomycorrhizal fungi are the most represented ecological category, followed by saprotrophs on wood, saprotrophs on litter, and terricolous saprotrophs. The interest in this rich group of organisms is evidenced by the nutritional and therapeutic value …
Seed morphology and seed coat structure in Mediterranean plants: implication for evolution, taxonomy and germinative performance.
2015
A better understanding of morphological, ultra-structural and anatomical seed coat characteristics can contribute to explain and predict seed performance under certain environmental conditions and select the most suitable treatments promoting seed germination. The Seed Banks at the Botanic Gardens of Catania and Palermo (Sicily) are particularly involved in research studies aimed to detect and describe macro- and micro-morphological features of seeds from different plant families and genera, using both light and scanning electron microscopy. These studies mainly aim to 1) recognize and compare inter- and intra-specific variation of seed coat traits, with particular attention on rare and thr…
Rare-earth elements and yttrium distributions in mangrove coastal water systems: The western Gulf of Thailand
2005
The concentration of rare-earth elements and yttrium (REY) was investigated in dissolved phase, suspended particulate matter, and seafloor sediments of the western coastal area of the Gulf of Thailand. The samples show Eu and Gd positive anomalies in the shale-normalized REY patterns, especially in the suspended particulate matter. On the other hand, a very high REE content was detected in the coastal waters, probably due to the weathering produced by the Mae Klong river waters on rare-earth element (REE)-rich accessory minerals coming from terrains and mineral deposits cropping out in the studied area. The shale-normalized patterns of yttrium and REE estimated for the dissolved phase show …
MONOTROPA HYPOPHEGEA WALLR., A NEW RECORD FOR THE SICILIAN FLORA
2014
During field investigations in the Mountains around Palermo, an unusual population of Monotropa sp. was found. After revision of the taxonomic literature and herbarium specimens, it was referred to Monotropa hypophegea Wallr. This species is closely related to M. hypopytis L., and in the past was considered only a variety (Pignatti 1982) or a subspecies (Křisa 1972) ) of it. More recently this entity has been considered an independent taxon deserving the rank of species (Conti et al. 2005). The most important morphological differences between the two taxa are the number of flowers in the raceme and the hairiness of sepals, petals and capsule. The individuals of the observed population have …
The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
2014
The morphological variability of the Isoetes longissima complex in Italy has been analyzed, on the basis of selected herbarium specimens. Observations were made on spore ornamentation and size, number of leaves per plant and maximum leaf length, velum extension and alae width in the basal portion of leaves. The first count of chromosome number on plants from Italy is also made. On the basis of our observations, the five taxa here considered are attributed to two taxa, treated at the species level as follows: I. longissima (incl. I. velata and I. velata [unranked] sicula), and I. tiguliana (incl. I. dubia). Italian distribution of these species is also given.
Contribution to the identification of Dianthus rupicola (Caryophyllaceae) subspecies using morphological and molecular approaches
2017
The systematic relationships between the five different subspecies actually recognized within Dianthus rupicola (subsp. aeolicus , subsp. bocchorianus , subsp. hermaensis, subsp. lopadusanus and subsp. rupicola ), were assessed by means of morphometric and molecular analysis. Our results highlighted the molecular differences between the five subspecies of D. rupicola and a morphological differentiation of four groups being D. rupicola subsp. aeolicus and D. rupicola subsp. rupicola partly overlapping. At the present state of knowledge, a subspecific status seems the most appropriate for all the recognized subspecies of D. rupicola . The names D. aeolicus , D. bisignanii var. virescens , D. …
Rediscovery of Hieracium nebrodense (Asteraceae), a little-known endemic of Sicily (Italy)
2016
Hieracium nebrodense Tineo ex Lojac., a little-known endemic of Sicily, has been rediscovered from the type locality after almost two centuries since its first and only collection made in 1830 in the Madonie Mountains (N Sicily). In line with the treatment in ‘Med-Checklist 2’, it is reclassified as a subspecies of H. schmidtii. A new combination is made and a detailed description and illustration are provided.
A new species of Ferula (Apiaceae) from Malta
2018
Ferula melitensis, a new species from the Malta Archipelago, is described and illustrated. It belongs to the taxonomic group of F. communis, showing close relationships mainly with F. tunetana, F. arrigonii, F. communis s.str. and F. glauca, from which it differs in several features regarding the stem, leaves (mainly for shape and size of terminal segments), flowers and mericarps; other significant differences regard the ecology and phenology. The investigations, carried out on living plants, herbarium material and literature data, regard the morphological analysis of vegetative and reproductive structures, the anatomy of terminal leaf segments and mericarps, as well as the shape and size o…