Description    The mushroom Ramaria flavo-brunnescens, family Clavariacae is found exclusively in soils among Eucalyptus woods. Ingestion of this mushroom has caused disease in cattle and sheep, and the syndrome has been experimentally reproduced. An unusual finding with this poisoning is smoothness of the dorsum of the tongue caused by atrophy of the papillae. There can be loosening of the hooves, cornual portion of the horns, and hair loss on the tip of the tail. Calves found dead had panlobular hepatic necrosis; toxicological analysis led to a diagnosis of amanitin toxicosis from ingestion of amanitin-containing mushrooms.
Species   Bovine, Ovine
Signs   Alopecia, Anorexia, Corneal edema, opacity, Dullness, Excessive salivation, Forefoot pain, Forelimb pain, Heat, nail, claw, hoof, Hindfoot pain, Hindlimb pain, Hyphema, Inability to stand, Lack of growth or weight gain, Nail, claw, hoof sloughing, Reluctant to move, Sudden death, Tongue ulcers, vesicles, Underweight, poor condition, thin, emaciated, unthriftiness, ill thrift, Weight loss
References   Yee MM. Amanitin intoxication in two beef calves in California. J Vet Diagn Invest 2012;24:241 [Web Reference]
Sallis ESV. Experimental intoxication by the mushroom ramaria flavo-brunnescens in sheep. Vet Human Toxicol 2000;42:321
Kommers GD. Experimental poisoning of cattle by the mushroom ramaria flav-brunnescens (clavariaceae): a study of the morphology and pathogenesis of lesions in hooves, horns and tongue. Vet Hum Toxicol 1998;37:297
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