Search results for "Barium"
showing 10 items of 262 documents
THE SAF HERBARIUM AT THE DEPARTMENT OF AGRICULTURAL AND FOREST SCIENCE (UNIVERSITY OF PALERMO)
2014
In the wide scenario of herbaria housed in the Italian Universities there are very few examples of structures mainly devoted to forest sciences and fungi in forest ecosystems. The “Regio Istituto Superiore Forestale di Vallombrosa” (Tuscany), established in 1869, was the first example of a structure that housed an herbarium with exsiccata of forest trees. In Italy, the southernmost laurea degree course in “Environmental and Forest Sciences” concern the Department of Agricultural and Forest Sciences in the University of Palermo (Sicily). Two herbaria (CAT and PAL) are currently present in Sicily with the following specialties: a) Vascular plants, bryophytes, and algae of Mediterranean area, …
Molecular approach for the characterization of ancient /degraded Cyperus sp.specimens
2013
The aim of this work has been to apply and improve the efficiency of molecular tools for the identification of Cyperus sp. from difTerent sources. Total DNA was extracted from fresh, degraded and ancient specimens. DNA molecules were the template for in vitro amplification of specific target regions referred to rcbL plastid gene (ribulose-l,5 -biphosphate carboxylase/oxygenase large subunit). Dedicated DNA extraction and amplification protocols have been applied specifically for fresh/degraded and ancient samples. Particularly, specific set of primer, annealing temperatures and reaction mixtures have been performed. The PCR products, single DNA fragments, were resolved on agarose gel electr…
Tipificación de dos nombres linneanos del género <em>Erigeron</em> L. (<em>Compositae</em>)
2013
Se presenta la lectotipificación del nombre Erigeron glutinosus L., con una ilustración de Barrelier de 1714 y de E. tuberosus L., con un ejemplar del herbario UPS-BURSER.
Sobre la presencia de <i>Teucrium pumilum</i> y <i>Teucrium libanitis (Lamiaceae)</i> en la provincia de Valencia
2010
Teucrium pumilum and T. libanitis have been cited from Valencia province (Spain) since the middle of the XXth Century from the gypsic soils in the Valle de Ayora-Cofrentes shire. The analysis of specimens and labels is not conclusive; no specimen would certify the presence of any of these taxa. The field identification and their inclusion in a phyotosociological table ( releve ) by Rivas Goday are the only basis of their presence in the territory in a particular moment of the recent Spanish botanical history. Additionally, the unique herbarium specimen from Valencia, impossible to assign a concrete geographic locality, which was traditionally assigned to T. pumilum by some authors, is actua…
A revision of Tamarix specimens (Tamaricaceae) kept in the BCN herbarium of Barcelona (Spain)
2018
The taxonomy of genus Tamarix L. is notoriously controversial and many taxa are still not or wrongly identified. A huge number of tamarisk specimens are kept in the most important herbaria of Spanish universities but many labels needs a deep nomenclatural revision. The Tamarix collection in Universitat de Barcelona (BCN) is composed by 158 samples, collected in different Comunidades Autónomas de España, and corresponding to 14 taxa.
Precisiones nomenclaturales en <em>Phlomis</em> × <em>composita</em> Pau <em>(Lamiaceae)</em>
2014
Se revisan algunos aspectos relacionados con la nomenclatura de Phlomis × composita. Se tipifica el nombre P. × composita Pau (Lamiaceae) a partir de material original de Pau, recolectado por Bourgeau en 1849 y conservado en el herbario del Real Jardín Botánico de Madrid. Se rechaza la anterior propuesta de tipificación de Mateu (1986) por ser incorrecta. Se propone un nuevo estatus taxonómico para el híbrido entre P. crinita subsp. crinita y P. lychnitis, bajo el rango de notosubespecie: P. × composita nothosubsp. trullenquei (Pau) P. P. Ferrer, Guara & E. Laguna, stat. nov.
The Capparis spinosa L. group (Capparaceae) in Australia
2003
Summary The Australian form of the Capparis spinosa group, at present treated as var. nummularia (DC.) Bailey, has been studied through field and herbarium investigations. Cultivations away from the distribution range were also carried out to test the maintenance of diagnostic characters in this taxon. Based on the obtained data, coupled with phytogeographical considerations and comparisons with the variants widespread in other areas, for the Australian form the subspecific rank is here proposed. Its distribution and autecology are also discussed.
Revision of the Eduardo Reyes Prósper’s herbarium and typification of three species of charophytes (<em>Charophyceae : Characeae</em>) pr…
2019
A study of the charophytes collected by Eduardo Reyes Prósper in the period 1904–1906 and kept in the herbarium of the Royal Botanical Garden of Madrid (MA-ALGAE) is carried out. Reyes Prósper’s herbarium consists of 112 sheets, which had not been revised until now, among which are the type materials of Lamprothamnus aragonensis Reyes y Prosper, Lamprothamnus toletanus Reyes y Prosper and Tolypella giennensis Reyes y Prosper, of which their lectotypes are here designated.
THE OCCURRENCE OF SENECIO VULGARIS L. VAR. VULGARIS AND S. × HELWINGII BEGER EX HEGI (S. VULGARIS × S. VERNALIS WALDST. ET KIT.) IN ISRAEL
1994
Common Groundsel (Senecio vulgarisL. var.vulgaris(2n = 40)) is widespread in the northern hemisphere. In Israel, judging from a herbarium survey, records taken from the Israel Plant Information Center (ROTEM), and field studies, it has a restricted and widely disjunct pattern of geographical distribution, and, thus, is another example of the comparatively large group of weeds in Israel which are extremely stenochorous. The remarkable gaps in its distribution, from the Upper Golan to Mt. Carmel and to the Jerusalem area, are considered primarily to be the result of paleoclimatic changes, whereas its occurrence outside these centers of distribution is probably related to long-distance dispers…
Lectotypification of Three Linnaean Names in the GeneraPhillyreaandFraxinus(Oleaceae)
2014
Lectotypes for the Linnaean names Phillyrea angustifolia, P. media and Fraxinus ornus (Oleaceae), are designated from original material conserved in LINN (Linnaean Herbarium) and BM (George Clifford Herbarium). A specimen at BM is designated here as the second-step lectotype of the name Fraxinus ornus.