The results of a comparative morphological analysis Typha sakhalinica Krasnova et Efremov are pre-sented. It was found that the characters reproductive organs do not correspond to T. latifolia from European part Russia. species is distinguished by staminate flowers with narrow membran-ous anthers, large and solitary pollen, degraded in bunches three. Plants smaller, cauline leaves axils membran...

Raised-field agricultural systems were exploited extensively by pre-Columbian Andean civilizations and now are used less extensively by contemporary Bolivian and Peruvian farmers as a method for farming the perennially wet soils of the intermontane pampas of the Andean high altiplano. The raised-field agricultural systems are linear or semi-linear raised planting platforms interspersed with sha...

Fipronil, a phenyl-pyrazole insecticide, is often used in rice (Oryza sativa L.) production agriculture, with elevated runoff concentrations and loads having potential toxicological effects on downstream aquatic environments. This study evaluated two species of aquatic plants-broadleaf cattail (Typha latifolia L.) and powdery alligator-flag (Thalia dealbata Fraser ex Roscoe)-placed in series ag...