Search results for "flor"
showing 10 items of 1665 documents
Botanical excursions in central and Western Sicily - Field Guide For the 60th IAVS Symposium
2017
Kauranoid dieterpenes in Espeletia grandiflora
1971
Abstract The resin of Espeletia grandiflora contains (-)-kaur-16-en-19-ol, (-)-kaur-16-en-19-al (not previously isolated from natural sources), (-)-kaur-16-ene and (-)-kaur-16-en-19-oic acid.
Actualización de las categorías de amenaza para la flora vascular de Andorra
2016
Desde la publicación en el año 2008 de la Check-list i Llista vermella de la flora d’Andorra, el Centre d’Estudis de la Neu i de la Muntanya d’Andorra (CENMA) ha ido realizando un seguimiento anual por ambientes de algunos de los taxones más amenazados a nivel nacional. Durante este estudio también se han recogido datos poblacionales y su estado de conservación con el objetivo de conseguir una información completa para la reevaluación de las categorías de amenaza. En este trabajo se presentan nuevas citas de 50 especies amenazadas de Andorra localizadas entre los años 2012 y 2015 y, cuando ha sido necesario, se ha cambiado la categoría según criterios de la UICN. Palabras clave: conservació…
Nuevos táxones para la checklist de la flora vascular de Andorra
2016
Se actualiza el listado de la flora vascular de Andorra. Con la información de publicaciones externas y trabajos propios del CENMA, se añaden 57 nuevos taxones para el Principado a la checklist vigente desde 2008, siendo el total actual de 1.594 taxones. New taxa for the checklist of vascular plants of Andorra. We update the checklist of vascular plants of Andorra. With external publications or own CENMA’s studies, 57 new taxon have been added for the Principality of Andorra to the current checklist, published in 2008, being 1.594 taxon at present
Aportaciones a la flora vascular de la provincia de Córdoba II (Andalucía, España)
2015
En el presente estudio corológico se aportan 25 taxones que son raros o suponen novedad para alguna comarca o toda la provincia de Córdoba (Andalucía, España). Los taxones más interesantes son Campanula decumbens subsp. baetica Cano-Maqueda & Talavera, Narcissus × susannae Fern. Casas y Plumbago auriculata Lam., ya que son citados por primera vez para esta provincia.
Dr. biol. Edgars Vimba: biobibliogrāfiskais rādītājs
2005
Advisor: Paukšēna Diāna
Morphology ofMaundiasupports its isolated phylogenetic position in the early-divergent monocot order Alismatales
2013
According to recent molecular phylogenetic data, the rare Australian endemic Maundia triglochinoides does not form a clade with taxa traditionally classified as members of Juncaginaceae. Therefore, views on the morphological evolution and taxonomy of Alismatales require re-assessment. As the morphology of Maundia is poorly known and some key features have been controversially described in the literature, the flowers, fruits, inflorescence axes and peduncles were studied using light and scanning electron microscopy. Inflorescences are bractless spikes with flowers arranged in trimerous whorls. Except in the inflorescence tip (where the flower groundplan is variable), flowers possess two tepa…
Limonium cedrorumsp. nov. (Plumbaginaceae) from Lebanon
2012
Limonium cedrorum Domina & Ramondo, a new species belonging to the L. palmare aggr., is described and illustrated from the inland near Becharre (Lebanon). Its relationships with morphologically close taxa are discussed. Limonium cedrorum differs from L. sieberi and L. postii mainly by looser inflorescences and larger flowers. It differs from L. galilaeum by longer outer bract and longer scale below the first inflorescence branch, few sterile branches, thicker base of the inflorescence and denser spikes, and from L. graecum by the shape of the infl orescence, longer basal internodes and the shape of the calyx.
Diversity, relationships and conservation of Sicilian wild taxa of Brassica: an overview
2016
Although lots of studies have been carried out through various analytical approaches and at different taxonomic levels, this overview reveals that actually a comprehensive biosystematic survey on the Mediterranean wild populations of Brassica oleracea group is still lacking.
Degradation of stone materials in the archaeological context of the Greek-Roman Theatre in Taormina (Sicily, Italy)
2010
In the present work results on the degradation phenomena of stone materials in the Ancient Theatre of Taormina, one of the most important Greek–Roman monuments of Sicily, are reported. Artificial stone materials in different conservation conditions were investigated. Samples of salt efflorescences from brick walls and degraded setting mortars were taken from the open gallery in “summa cavea”. The chemical, physical and structural characterization was performed by means of X-Ray Photoelectron Spectroscopy (XPS), X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF), both in situ and ex situ. Results showed that the deterioration of stone materials is due to the aggressive action of the enviro…