Search results for "Systematics"
showing 10 items of 6702 documents
<p class="HeadingRunIn"><strong>The genus <em>Uracrobates</em> (Acari, Oribatida, Mochlozetidae)</strong></p>
2015
Uracrobates (Parauracrobates) truncatus sp. nov. is proposed, based on specimens from soil in Nepal. Parauracrobates subgen. nov. is distinguishable from subgenus Uracrobates by the notogaster truncated posteriorly (versus conical). An identification key to known taxa in the genus Uracrobates is given.
Contribution to the knowledge of the genus Phlebia in Italy
2014
The presence of two corticioid taxa belonging to the genus Phlebia (Basidiomycota), collected from Sicily, Italy is reported. A macro- and micromorphological descriptions of P. acanthocystis and P. nothofagi added of ecological and distributional data are here provided. P. acanthocystis is reported as new for Italy.
The sabulicolous fungi from Sicily (southern Italy): additions and critical review
2009
The ecological and distributive data of 165 sabulicolous taxa (29 Ascomycetes and 136 Basidiomycetes), included in 89 genera and 48 families, collected in Sicily (southern Italy) are here reported. New additions are included, together with a critical review of data reported in literature for the Sicilian territory. The full checklist is available on http://www.mycotaxon.com/resources/weblists.html
Orthotrichum pilosissimum (Orthotrichaceae), a new moss from arid areas of Nevada with unique axillary hairs
2011
Abstract Orthotrichum pilosissimum is described from herbarium material and recently collected specimens in the state of Nevada. Its specific epithet refers to the diagnostic hyper-developed axillary hairs, which are frequently longer than 1 mm, multiseriate and branched, covering most of the stems surface and sometimes protruding from the foliose shoots. These hairs are not only unique in the genus but also among mosses, providing a reliable diagnostic character for the new taxon. Additional gametophytic and sporophytic characters that contribute to its taxonomic delimitation are also given.
Hieracium hypochoeroidessubsp.peracutisquamum(Asteraceae), a New Taxon from Basilicata, Southern Italy
2015
Hieracium hypochoeroides subsp. peracutisquamum Di Grist., Gottschl. & Raimondo, a new taxon endemic to Basilicata (southern Italy), is described and illustrated. It is confined to the carbonate rocks of Monte della Madonna di Viggiano (Lucanian Apennine, SW Basilicata). Information on its habitat ecology and taxonomic relationships is provided.
Taxonomic remarks onHieracium sartorianumvar.lucanicum(Asteraceae), a little known taxon of Cilento (Campania, southern Italy)
2015
Hieracium sartorianum var. lucanicum, a little known taxon described from Mt Sacro (Parco Nazionale del Cilento e Vallo di Diano, Prov. of Salerno, Campania, Italy), is reexamined. As a result it is reclassified as a subspecies to H. hypochoeroides. A new combination and lectotypification are made and a detailed description is given.
A taxonomic nightmare comes true: phylogeny and biogeography of glassworts (Salicornia L., Chenopodiaceae)
2007
In this study we analysed ETS sequence data of 164 accessions belonging to 31 taxa of Salicornia, a widespread, hygrohalophytic genus of succulent, annual herbs of Chenopodiaceae subfam. Salicornioideae, to investigate phylogenetic and biogeographical patterns and hypothesise about the processes that shaped them. Furthermore, our aim was to understand the reasons for the notorious taxonomic difficulties in Salicornia. Salicornia probably originated during the Miocene somewhere between the Mediterranean and Central Asia from within the perennial Sarcocornia and started to diversify during Late Pliocene/Early Pleistocene. The climatic deterioration and landscape-evolution caused by orogenetic…
Biomonitoring with cryptogams near the power station of la Robla (Leon, Spain)
2007
The present monitoring study was undertaken to analyze the impact of atmospheric pollution on the lichens found near a power station in northern Spain. Data from 565 releves gathered on 113 sites were analyzed. In areas near the power station the lichen species belong to the Xanthorion community. In areas away from the power station and that are not under the influence of dominant winds, the lichenic diversity increases and the species present belong to the Parmelion community. In intermediate areas between the two, there is a great increase in lichen diversity, in these areas there is a replacement of the species that typically belong to the Xanthorion community, by species typical of the …
Stigma morphology inAylosterasubg.Mediolobivia(Cactaceae) and its importance for systematic investigation
2013
The stigma of 31 taxa of Aylostera (Cactaceae) was studied using environmental scanning electron microscopy. Seven stigma types could be defined, based on the degree of fusion of the stigmatic lobes and, when these are completely separated (types I and II), their orientation. Four types (types IV, V, VI and VII) are present only in Aylostera subg. Mediolobivia, two of which (types IV and VII) are species-specific. Stigma morphology was found to be a good diagnostic character in Aylostera subg. Mediolobivia, allowing in some cases to distinguish species that had been confused previously. The stigmatic types here defined seem apt to characterize natural groups within the subgenus and are usef…
Allium Achaium Boiss. (Alliaceae), a Critical Species of Greek Flora
2011
Abstract Bogdanovic, S., C. Brullo, S. Brullo, G. Giusso del Galdo, C. M. Musarella & C. Salmeri (2011). Allium achaium Boiss. (Alliaceae), a critical species of Greek flora. Candollea 66: 57–64. In English, English and French abstracts. Allium achaium Boiss. (Alliaceae), a critical and misappreciated species of Greek flora is investigated from a taxonomic point of view and illustrated. It belongs to sect. Codonoprasum Rchb. and shows close relationships with the taxa of the Allium stamineum Boiss. group. Karyology, ecology and distribution of that species are examined.