The taxonomy of some ophiuroids reported from off Argentina, western Antarctica and the SW Atlantic Ocean is reviewed. The species Amphilepis sanmatiensis, known only from the small holotype, is a synonym of Amphioplus lucyae. This synonymy removes the only reported endemic ophiuroid from Argentina. The species name "Ophiacantha ingrata Koehler, 1923" used for specimens from South Georgia is in...

coumarins are bioactive secondary metabolites and could be found in the fruits of umbelliferae. prangos asperula boiss. is an iranian native plant which is found wild in many regions of iran. osthol, a prenylated coumarin, was isolated from the hexane extract of the fruits of p. asperula and its structure was elucidated using 1 hnmr, 13 cnmr, ir and ms spectra. the essential oil of the aerial p...

Pollinators in general and monarch butterflies in particular are in decline due to habitat loss. Efforts to restore habitats for insects that rely on specific plant groups as larvae or adults depend on the ability of practitioners to grow and produce these plants. Monarch larvae feed exclusively on milkweed species, primarily in the genus Asclepias, making propagation and restoration of these p...