Origanum compactum L. (Lamiaceae) is one of the most important medicinal species in term of ethnobotany in Morocco. It is considered as a very threatened species as it is heavily exploited. Its domestication remains the most efficient way to safeguard it for future generations. For this purpose, wide evaluation of the existing variability in all over the Moroccan territory is required. The esse...

After an extensive search for the type specimens of Caecum floridanum Stimpson, 1851, we believe that these specimens may have been either lost or destroyed in the Chicago fire (1871). This paper presents a redescription of the species and a neotype is designated based on material from the type locality (Florida). Protoconch and growth stages of Caecum floridanum are described and illustrated h...

Streptococcus pyogenes plays an important role in the pathogenesis of tonsillitis. The present study was conducted to evaluate the in vitro antibacterial activities of 18 essential oils chemotypes from aromatic medicinal plants against S. pyogenes. Antibacterial activity of essential oils was investigated using disc diffusion method. Minimum Inhibitory Concentration of essential oils showing an...

Introduction. The Cech homology groups of an r-dimensional space are known to vanish in dimensions greater than r. We will show that the corresponding assertion for the singular homology groups is false, even on the category of locally (r—1)-connected compacta. An rdimensional compactum X, locally contractible save at one point, is given such that the singular homology groups Hq(X; Q) with rati...

Let X be a Hausdorff compact space and C(X) be the algebra of all continuous complex-valued functions on X, endowed with the supremum norm. We say that C(X) is (approximately) n-th root closed if any function from C(X) is (approximately) equal to the n-th power of another function. We characterize the approximate n-th root closedness of C(X) in terms of ndivisibility of first Čech cohomology gr...

This study has evaluated the parasitic fauna of 79 pearl cichlids (Geophagus brasiliensis) from the estuary of Patos Lagoon (31° 57' S and 52° 06' W), Rio Grande do Sul, Brazil, during the months of May and June in 2011 and 2012. All the hosts analyzed were infected with at least one species of parasite. A total of eleven metazoa were identified in 459 specimens collected. The trematode Austrod...

We say that a metrizable space M is a Krasinkiewicz space if any map from a metrizable compactum X into M can be approximated by Krasinkiewicz maps (a map g : X → M is Krasinkiewicz provided every continuum in X is either contained in a fiber of g or contains a component of a fiber of g). In this paper we establish the following property of Krasinkiewicz spaces: Let f : X → Y be a perfect map b...

The genus Fusarium includes several species that produce trichothecenes. We analyzed DNA sequences from a variable region at the 5' end of the large nuclear ribosomal DNA (rDNA) (28S) to determine the genetic relatedness of trichothecene-producing Fusarium species. All trichothecene-producing strains clustered together, and two monophyletic groups were resolved. The first clade included strains...