This datasheet on Pteris vittata covers Identity, Overview, Distribution, Dispersal, Diagnosis, Biology &amp; Ecology, Environmental Requirements, Natural Enemies, Impacts, Uses, Prevention/Control, Further Information. 

Pteris vittata (Chinese ladder brake fern)

A chronology of middle Missouri Plains village sites

Charola, A. Elena, and Robert J. Koestler, editors. Pesticide Mitigation in Museum Collections: Science in Conservation. Proceedings from the MCI Workshop Series. Smithsonian Contributions to Museum Conservation, number 1, vi + 72 pages, 51 figures, 15 tables, 2010. — The Smithsonian Museum Conservation Institute Workshop on Pesticide Mitigation was one of the first professional meetings dedicated to current research on removing pesticide residues from museum objects. Seven papers were presented at the workshop, and two more were added to introduce topics not focused on during the meeting but of significant importance when considering actual application of any of these methods. The aim of the workshop was to bring together conservators, scientists, and even industry representatives to discuss the complex issues associated with pesticide removal from artifacts and to provide representative examples of the research and work being carried out at different institutions in the United States and abroad. Among the issues explored were possible methods and techniques that might become useful in the museum conservation field to reduce, mitigate, clean, or remediate undesirable pesticides on objects. The meeting also served to inform conservators and scientists in the Smithsonian Institution of the wide range of approaches that are currently being tested and that might prove useful in the future. Topics covered in the presented papers included removal of mercury and arsenic contamination with α-lipoic acid; the treatment of Haudenosaunee medicine masks with surface active displacement solutions; the possibility of using mercury-resistant bacterial communities to remediate contamination; solvent extraction through the use of special solvents such as hydrofluoroethers; carbon dioxide as a cleaning fluid either in liquid or in supercritical state; and novel cleaning techniques either through the use of additives to improve the efficiency of liquid or supercritical CO2 cleaning, other gases in a supercritical state, or other techniques such as fluidized beds. The introduction of novel techniques at the workshop was encouraged in order to broaden the range of promising methods that might improve the technology of pesticide mitigation or remediation. The two supplemental papers discuss pesticide analysis on objects and safety measures that should be implemented by institutions with contaminated collections. Cover images, from left to right: Figures 11, 2, and 9 (detail) by Tello and Unger. Published by Smithsonian Institution Scholarly Press

A chronology of middle Missouri Plains village sites; ; Smithsonian contributions to anthropology;

Summary. Recent biodiversity surveys in the Cayman Islands have generated several new records for the reasonably be attributed to recent introduction. Exotics not clearly spreading, but known to be weedy elsewhere, were often seen in planted lawns and in landscape situations. Notable among these were Hydrocotyle umbellata L. and Polypremum procumbens L. found apparently as accidental introductions in recent landscaping at the Queen Elizabeth II Botanic Park and several large fruiting specimens of Melaleuca quinquenervia (Cav.) S. T. Blake in a landscape planting on Cayman Brac. Also, several grasses previously unknown in the Cayman Islands were observed in cultivation in Georgetown and environs. The species observed included Cymbopogon citratus (DC.) Stapf, Pennisetum setaceum (Forssk.) Chiov., Pennisetum macrostachyum (Brogn.) Trin., Phyllostachys sp., Pogonatherum paniceum (Lam.) Hack., Tripsacum floridanum Porter ex Vasey, and Tripsacum dactyloides (L.) L. The flora of the Cayman Islands is dynamic and work continues on cataloguing and conserving the biodiversity of the islands. There will certainly be more species found (e.g. an as yet undetermined Drypetes found recently in the Mastic area) and some will certainly disappear. We will continue to report on the developments. Photographs of most (and eventually all) collections at CAYM and FTG can be seen

Additions to the flora of the Cayman Islands.

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Additions to the flora of the Cayman Islands.