ovoviviparous amphibian of the Alps

a disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin); characterized by gastrointestinal disturbances and erythema and nervous or mental disorders; may be caused by malnutrition or alcoholism or other nutritional impairments

whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States

whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States

whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States

whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States

whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States

a glacier that moves down from a high valley

a glacier that moves down from a high valley

a glacier that moves down from a high valley