Search results for "botany"
showing 10 items of 4586 documents
Chemosystematic study on leaf volatile compounds of Saxifraga L. series Ceratophyllae (Saxifragaceae)
1999
Extracts from 65 samples corresponding to 13 species and 18 taxa of Saxifraga series Ceratophyllae s. l. were analysed by GC and GC/MS. This paper provides the first chemosystematic information on volatile composition of a seemingly natural group in the Saxifragaceae. Diterpenoids and n-alkanes appear to be the most important constituents and some of them are associated to different species and taxonomic series. The application of multivariate analysis techniques to GC and GC/MS data has allowed the classification of samples into two groups, corresponding approximately to the series Ceratophyllae s. str. and Pentadactyles, previously proposed on the basis of morphological and cytotaxonomica…
<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.
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.
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.
A revision of Papaver sect. Meconidium
2010
The biennial Papaver L. sect. Meconidium Spach (Papaveraceae) is considered to contain four species: P. libanoticum Boiss. with subspp libanoticum and polychaetum (Schott & Kotschy ex Boiss.) Kadereit comb. et stat. nov., P. armeniacum (L.)DC. with subspp armeniacum, microstigmum (Boiss.) Kadereit comb. et stat. nov. and pilgerianum (Fedde) Kadereit comb. et stat. nov., P. curviscapum Nab., and P. persicum Lindl. with subspp persicum, tauricolum (Boiss.) Kadereit comb. et stat. nov. and microcarpum (Boiss.) Kadereit comb. et stat. nov. A key to species and subspecies is given, capsules and leaves of all taxa are illustrated, and distribution maps are provided.
<strong>Nomenclatural notes on Fabaceae described from Sicily</strong>
2021
A note about some taxa in Anthyllis and Trifolium (Fabaceae) described from Sicily is presented. Concerning Trifolium, we provide the lectotypification of the name T. pratense var. semipurpureum (≡ T. pratense subsp. semipurpureum), using a specimen preserved at PAL (Todaro’s collection). Concerning the Lojacono-Pojero’s name Vulneraria heterophylla var. parvula, it is lectotypified by a specimen at G. A neotype at NAP is proposed for the Gussone’s name Vulneraria heterophylla var. albiflora. As this latter name is applied to a taxon accepted here at specific rank, a new combination is validated. On the contrary, A. heterophylla var. parvula is considered as a new heterotypic synonym of Ant…