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"Asplenium petrarchae" nothosubsp. "diazii" ("Aspleniaceae, Pteridophyta"), un híbrido natural nuevo para la flora levantina y precisiones sobre sus progenitores
No full textAsplenium petrarchae (Guérin) DC. nothosubsp. diazii, a natural hybrid originating from A. petrarchae subsp. petrarchae and A. petrarchae subsp. bivalens (D. E. Meyer) Lovis & Reichstein, is described from Eastern Spain. It is a triploid plant which shows trivalent chromosomal associations at meiosis, demonstrating a certain degree of homology between its three genomes. This fact constitutes significant evidence for its proposed hybrid origin. as well as new support for the hypothesis of an autopolyploid origin of A. petrarchae subsp. petrarchae, in which A. petrarchae subsp. bivalens would be implicated. The two subspecies are compared morphologically and characters used to distinguish them are proposed and discussed. Chorological aspects of A. petrarchae subsp. ptrarchae and A. petrarchae subsp. bivalens in Eastern Spain are commented upon. According to our data, the latter taxon is well-represented in the Setabense Sector (Catalonian-Valencian-Provençal province).Se describe del levante español Asplenium petrarchae (Guérin) DC. nothosubsp. diazii, híbrido natural originado a partir de A. petrarchae subsp. petrarchae y A. petrarchae subsp. bivalens (D. E. Meyer) Lovis & Reichstein. Se trata de una planta triploide que muestra en meyosis asociaciones trivalentes de cromosomas, lo que pone de manifiesto una cierta homología entre sus tres genomas. Este hecho constituye una prueba significativa del origen propuesto para la misma, al mismo tiempo que un nuevo apoyo en favor de la hipótesis de un origen autopoliploide de A. petrarchae subsp. petrarchae, en el que estaría implicado A. petrarchae subsp. bivalens. Como consecuencia de la comparación morfológica de las dos Subespecies anteriormente citadas, se proponen y comentan ciertos caracteres que contribuyen a su distinción. Se comentan aspectos corológicos de A. petrarchae subsp. petrarchae y A. petrarchae subsp. bivalens en el levante español. Según nuestros datos, este último taxon se encuentra ampliamente representado en el sector Setabense (provincia Catalano-Valentiano-Provenzal)
Sobre la vegetación del Orden Asplenietalia petrarchae en las montañas valencianas
No full textSe han estudiado las comunidades vegetales casmofíticas basífilas, presentes sobre los roquedos cálidos y secos, pertenecientes al orden Asplenietalia petrarchae Br.-Bl. & Mcier 1934, en el territorio de la Comunidad Valenciana y alrededores, detectándose en el mismo los siguientes sintáxones: Alianza Asplenion petrarchae Br.-Bl. & Meier 1934, con la asociación Melieo-Saturejetum fruticosae O. Bolós & Vives 1957. Alianza Teucrion buxifolii Rivas Goday 1955, con las asociaciones: Hippocrepido-Scabiosetum saxatilis (Rivas Goday 1953) O. Bolós 1957, Jasonio-Teucrietum thymifolii G. Mateo 1983, Rhamno borgiae-Teucrietum buxifolii nova y Lapiedro martinezii-Chelanthetum velleae nova.Chasmophytic basiphil plant communities, wich growth in dry and hot rocky places (Ord. Asplenietalia petrarchae Br.-Bl. & Meier 1934) are studied in Valencia and neighbourhood (E Spain). There we distinguish the following syntaxa: All. Asplenion petrarchae Br.-Bl. & Meier 1934, with the only association Melico-Saturejetum fruticosae O. Bolós & Vives 1957. All. Teucrion buxifolii Rivas Goday 1955, with this four associations: Hippocrepido-Scabiosetum saxatilis (Rivas Goday 1953) O. Bolós 1957, Jasonio-Teucrietum thymifolii G. Mateo 1983, Rhamno borgiae-Teucrietum buxifolii nova and Lapiedro martinezii-Chelanthetum velleae nova
Librorum Francisci Petrarchae Basileae impressorum annotatio
Get PDF388 f. ; Fol. (30 cm)Exemp. incompleto, datos do pé de imp. e desc. física tomados do IBE e Hain -- L. red. 2 tam. (87R 75R) ; 49-55 lín. -- Sin.: A8, B6, C8 ; A8, B-D6, E8 -- Na port.: Librorum Francisci Petrarchae Basileae Impressorum Annotatio. Bucolicum ... -- Desta ed. das obras reunidas de Petrarca, son Bucolicum carmen e De vita solitaria [56 f.] -- En A1v.: De commendatione impressionis Francisci Petracha Elogiu[m] Sebastiani Brant
Librorum Francisci Petrarchae Basileae impressorum annotatio ; De vera sapientia
No full textConté: Bucolicum carmen; De vita solitaria; De remediis utriusque fortunae; Secretum; De vera sapientia [de Nicolau de Cusa]; Rerum memorandarum lib.; Invectivae in medicum obiurgantem; Opus epistolarum, Psalmi poenitentiales; Epitomatis illustrium virorum. In epitomatis illustrium virorum Lorbardi de Siricho Patavini supplementum. Sebastian Brant: De commendatione impressionis Francisci Petarchae. Benvenutus de Rambaldis: Libellus Augustalis. Annotatio principalium sententiarum ex libris Francisci Petrarchae collectarum ; Exemplar incomplet : falta la portad
Una nueva asociación prepirenaica de Asplenion petrarchae Br.-Bl. in Meier & Br.-Bl. 1934 nom. mut
Get PDFA new Pre-Pyrenean association of Asplenion petrarchae Br.-B1. in Meier & Br.-131. 1934 nom. mut. Palabras clave. Vegetación rupícola, Asplenietea, fitosociología, sintaxonomía, España. Key words. Rupicolous plant communities, Asplenietea, phytosociology, syntaxonomy, Spain
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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