Answer:

pimpernel

AnswerCrossword Clue
PIMPERNELIts flowers close at the approach of bad weather
PIMPERNELStoried "scarlet" character
PIMPERNELPlant of the primrose family
PIMPERNELBaroness Orczy's scarlet hero.
PIMPERNELScarlet flower.
PIMPERNELPlant of the primrose family.
PIMPERNELLeslie Howard's was scarlet