Tetradymia

Tetradymia

North American genus in plant family Asteraceae; contain an unidentified hepatoxin which causes secondary photosensitization. Includes T. canescens (spineless horsebrush), T. glabrata (spring rabbitbush, little leaf horsebrush, coal oil bush).
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Especies de otros generos de asteraceas tambien han sido mencionadas por su toxicidad para el hombre y los animales; entre ellos destacan los siguientes: Ambrosia, Anthemis, Arnica, Artemisia, Aster, Baileya, Barkleyanthus, Bidens, Cirsium, Conyza, Chromolaena, Elephantopus, Geigeria, Gutierrezia, Haplopappus, Helenium, Iva, Lactuca, Leucanthemum, Ligularia, Lygodesmia, Mikania, Packera, Parthenium, Pittocaulon, Psacalium, Psilostrophe, Rudbeckia, Sigesbeckia, Solidago, Sommerfeltia, Sonchus, Tagetes, Tanacetum, Telanthophora, Tetradymia, Trixis, Vernonia, Zexmenia, etc.
nova (black sagebrush), Atriplex confertifolia (shadscale), Tetradymia spinosa (shortspine horsebrush), and Ephedra torreyana.
John's wort Hypericum perforatum Primary Agave Agave lechuguilla Secondary Horsebrush Tetradymia spp.