Search results for "Systematic"

Leptocorticium gloeocystidiatum sp. nov. (Basidiomycota), a new corticioid fungus from Sicily, Italy

2014

A new corticioid species, Leptocorticium gloeocystidiatum is described from Sicily, Italy. It is characterized by a resupinate, buff-coloured basidiome and microscopically by the presence of filiform leptocystidia, gloeocystidia, dendrohyphidia, and small ellipsoid, smooth basidiospores, non-reacting in Melzer's reagent. The species is compared with closest relatives. A key to the accepted species of Leptocorticium is provided.

<i>Limonium vigoi (Plumbaginaceae)</i>, a new tetraploid species from the Northeast of the Iberian Península

1998

SAEZ, L., A. CURCO & J.A. ROSSELLO (1998). Limonium vigoi (Plumbaginaceae), a new tetraploid species from the Northeast of the Iberian Peninsula. Anales Jard. Bot. Madrid 56(2): 269-278. A new tetraploid agamic species, Limonium vigoi, is described from coastal populations of the Northeast of the Spain (Ebro delta). The new species is related, on morphological grounds, to L. girardianum (Guss.) Fourr. and L. grosii L. Llorens, from which it could be easily discriminated by its retuse leaves, the basal ones usually withered at anthesis, the very short (or even absent) leaf apiculum, the denser and longer (up to 0.7 mm) hairs of the calyx tube and the deeper colour of the corolla. In addition…

Complete phylogeny and historical biogeography of true rosefinches (Aves:Carpodacus)

2013

True rosefinches (Aves: Carpodacus) are restricted to Eurasia, and 19 out of 25 species occur in the Sino-Himalayas, making this the likely centre of origin. To test this hypothesis, suggested species splits had to be evaluated and potential further cryptic diversity unravelled. A taxon-complete dated molecular phylogeny was reconstructed using maximum-likelihood and Bayesian methods. Maximum-parsimony and likelihood approaches were applied to deduce ancestral areas. Rosefinches, including the widespread Carpodacus erythrinus (Pallas, 1770), originated in south-west China (and the Himalayas) 14 Mya, and gave rise to a smaller clade consisting of C. erythrinus, Haematospiza sipahi (Hodgson, …

Lectotypification of the Linnaean name Dianthus virgineus (Caryophyllaceae) and its taxonomic consequences

2021

A lectotype is designated for the name Dianthus virgineus. The relationships between D. virgineus, D. caryophyllus var. caryophyllus, and D. caryophyllus var. inodorus are analyzed. Dianthus virgineus is the oldest available name that applies to a species complex that is often referred to as D. sylvestris or a broad circumscription of the cultivated ornamental D. caryophyllus. The taxonomic consequences are discussed, and the need for further studies is highlighted.

Coupures morphologiques et biochronologie chez les Kosmoceratinae de l'Est de la France (Callovien inférieur pp. à Callovien supérieur pp.)

1998

Abstract For the first time in eastern France, a detailed succession of the uppermost Lower Callovian to Lower Upper Callovian Kosmoceratinae is presented, according to the fossils collected in situ at Blye (Jura, France). It is compared with the abundant data from Champagne and Bourgogne. These ammonites may allow more accurate correlations between the subboreal and subtethysian biostratigraphical frameworks. They record numerous morphological changes, sometimes different from those generally accepted. They allow the precise recognition of the limits of the biostratigraphical units, and the definition of successive faunal units available in the lowermost Upper Callovian.

Intestinal Helminth Parasites of Wall Lizards, Podarcis vaucheri Complex (Sauria: Lacertidae) from Algeria

2011

Abstract A parasitological survey was carried out to determine the relationships between the helminth fauna and biological traits of the hosts in three Algerian populations of Podarcis lizards belonging to two different evolutionary lineages. Size, sex, and locality of collection, as well as the infracommunities and component communities, were analyzed. Very low values of parasite infection parameters and diversity were found in all three populations. This is in accordance with the feeding habits of these lizard hosts, which only eat animal prey and no plant matter. Spauligodon saxicolae (Nematoda: Pharyngodonidae), a specialist in lizards, is reported here for the first time in Africa. Thi…

Activity and body orientation of Gallotia galloti in different habitats and daily times

2011

Abstract In lizards, site selection is related to the acquisition of resources such as refuges, mates or prey, but also to the exploitation of sites suitable for thermoregulation. The latter process may be affected by lizard posture and body axis orientation in relation to the sun as a way to optimize heat exchange throughout the day. Specific postures and body orientations could also contribute to more efficient signal transmission in social contexts. In this paper we analyze activity and body axis orientation of adult males and females of the lacertid Gallotia galloti in two localities of Tenerife with different structural habitats. We performed transects at both sampling localities in t…

Context-dependent effects of tail-ornament damage on mating success in black grouse

1994

Is Welsh Poppy,Meconopsis cambrica(L.) Vig. (Papaveraceae), truly aMeconopsis?

2011

AbstractSince the nineteenth century, the western European endemic Meconopsis cambrica has been regarded as the only European representative of the genus Meconopsis Vig. This genus, which is otherwise restricted to the Himalayas, differs from Papaver in having a style rather than a stigmatic disc. A phylogenetic reconstruction using 65 internal transcribed spacer sequences of 62 taxa of Old World Papaveroideae and three outgroup taxa shows that M. cambrica is not the closest relative of the remainder of Meconopsis but rather the closest sampled relative of Papaver s.str. This is consistent with morphological evidence which suggests that the style evolved independently in M. cambrica from a …

Correlations among fruit traits and evolution of different fruits within Melastomataceae

2000

Abstract The anatomy and morphology of nearly mature fruits in 85 mainly palaeotropical species of Melastomataceae were examined using microtome- and hand-sectioning, and differential staining. Much structural heterogeneity was observed in both capsules and berries. Multivariate analyses of 31 of the 52 characters recorded for each species, revealed that indehiscence is associated with fusion of ovary and hypanthium tissues, placenta persistence, lack of a persistent endocarp, and a dearth of sclereids in these tissues, while dehiscence is correlated with the opposite states and a persistent exocarp. Other fruit characters such as lignification or fleshiness of tissues do not show a consist…