Introduction: Selaginella species have been used widely for the treatment of inflammatory diseases, diabetes and cancer. In this study, the contents of the total flavonoids and amentoflavone in five Selaginella plant drugs [Selaginella moellendorffii Hieron. (SM), Selaginella delicatula (Desv.) Alston (SD), Selaginella uncinata (Desv.) Spring (SU), Selaginella heterostachys Baker (SH) and Selag...

Cupressaceae pollen is responsible for winter respiratory allergies in the Mediterranean area. Pollen grains of this diverse family share same characteristics under light microscopy. Consequently, partial contribution each species to airborne spectrum cannot be determined with conventional aerobiological methods. Studies on major aeroallergens offer better information allergic sensitization and...

Kent a?açlar? karbon sal?n?m?n? azaltmaya yönelik depolayan ve tutan en önemli havuzlar?ndand?r. Karbon depolama tutma oran? her bir a?ac?n a?aç türü, boyu, ya?? yaprak biyokütlesi sa?l?kl? durumuna ba?l? olarak do?rudan ili?kilidir. Bu çal??mada; kentsel yol a?açlar?n?n yüzeyi biyokütlesinin hesaplanmas?nda Nowak (1996) taraf?ndan geli?tirilmi? formül, yapraklardaki tahmini için ise Tu?luer (2...

Telomeres, the essential terminal regions of linear eukaryotic chromosomes, consist of G-rich DNA repeats bound by a plethora of associated proteins. While the general pathways of telomere maintenance are evolutionarily conserved, individual telomere complex components show remarkable variation between eukaryotic lineages and even within closely related species. The recent genome sequencing of ...

In this paper, I describe five new species of Selaginella from Brazil (Selaginella nanuzae, Selaginella neospringiana, Selaginella pellucidopunctata, Selaginella stomatoloma, and Selaginella trygonoides), compare them to morphologically similar species, and provide a preliminary conservation status assessment for each. The new species are illustrated with scanning electron photomicrographs of s...

The activities of 10 enzymes involved in carbohydrate metabolism were measured in both desiccated and rehydrated fronds of the desiccation-tolerant pteridophyte Selaginella lepidophylla (Hook. & Grev.) Spring. Enzyme conservation was defined as the ratio of desiccated to hydrated frond enzyme activity. The mean level of conservation was 74%, with nine of the 10 enzymes showing significant activ...

Arbutus mollis Kunth in H.B.K., tradicionalmente considerado como un sinónimo de A. xalapensis es el nombre más antiguo para las plantas conocidas occidentalis var. villosa McVaugh & Rosatti. La revisión los madroños porte arbustivo que han sido incluidos bajo Rosatti revela dos variedades descritas esa especie, posteriormente reducidas a sinonimia, difieren en varios caracteres morfológico...

A complex geologic history has shaped the distribution of Arizona willow (Salix arizonica Dorn) and the Mogollon paintbrush (Castilleja mogollonica Pennell). These subalpine plants do not appear to be strict substrate specialists, but they do seem to favor coarse-textured and well-watered soils. Most of their occupied habitats were shaped by Quaternary glaciations, but are ultimately derived fr...

Choisya 'Aztec-Pearl', a hybrid of Choisya ternata and Choisya dumosa var. arizonica, had the antinociceptive activity in the ethanol extract (EECA) of its leaves evaluated. Two quinoline alkaloids, anhydroevoxine (A) and choisyine (C), isolated from these leaves were also tested. The results obtained pointed out to a very high antinociceptive activity measured by the hot plate model for EECA (...