Xanthium strumarium L. is a member of the Asteraceae commonly used in Cuba, mainly as diuretic. Some toxic properties of this plant have also been reported and, to date, very little is known about its genotoxic properties. The present work aims was to evaluate the potential cytotoxic and genotoxic risk of whole extract from Xanthium strumarium L. whole extract of aerial parts. No positive respo...

Three Caecidae species from two genera have been recovered the late Miocene “Imperial” Formation exposed in Super Creek, north and slightly east of Whitewater, Riverside County, southern California. These specimens record first fossil California older than Pleistocene. The three taxa are Caecum brasilicum de Folin, 1874, Meioceras nitidum (Stimpson, 1851), a new named C. roederi n. sp., honor f...

Greenhouse-grown plants of Xanthium strumarium L. were exposed in a growth cabinet to 10 C during days and 5 C during nights for periods of up to 120 hours. Subsequently, CO(2) exchange, transpiration, and leaf temperature were measured on attached leaves and in leaf sections at 25 or 30 C, 19 C dew point of the air, 61 milliwatts per square centimeter irradiance, and CO(2) concentrations betwe...

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