The story
Scarlet pimpernel flowers open only when the sun shines, and even close in overcast conditions.
Etymology from Wiktionary, CC BY-SA 4.0.
poor man's weatherglass
Today it means: A scarlet pimpernel (Anagallis arvensis). Full definition →
Today it means: A scarlet pimpernel (Anagallis arvensis). Full definition →
Scarlet pimpernel flowers open only when the sun shines, and even close in overcast conditions.
Etymology from Wiktionary, CC BY-SA 4.0.