Besides streams, rivers and ponds, Monkeyflower is a showy plant which reaches 50cm in height, displaying wonderful splashes of yellow among large, bright green leaves. A perennial, its robust, stout stems bear open clusters of 2-lipped, rich yellow flowers (25-45mm across), the upper lip being divided in two, the lower divided in three. This bottom lobe has a few small dark red spots, mostly towards the mouth of the flower where small upright yellow bristles cover the two upright bulges where pollinating insects land. The toothed, oval leaves are in opposite pairs, those higher up the plant clasp the stems and are sessile. The flowers bloom from June to September. Monkeyflower is an introduced plant which belongs to the family Scrophulariaceae.
I found this plant in 2009 at Tintern Abbey, Co Wexford and photographed it there at that time.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre