the.com/cinquefoil

a five-fingered weed so determined it photobombed medieval coats of arms and witch trials alike

means A low-growing plant of the rose family (genus Potentilla) with leaves typically divided into five leaflets, or, in architecture and heraldry, a five-lobed ornamental shape resembling such a leaf.

from From Old French cincfoil, itself stitched together from Latin quinque, "five," and folium, "leaf" — a cousin of the foliage and portfolios of the world. So the name is simply a botanist's headcount: five leaves, plainly stated. The same Latin folium also flowered into trefoil (three) and quatrefoil (four), making cinquefoil the eldest sibling in a tidy numerical family of leaf-shapes.

name math
Latin for five leaves, count them yourself
witch flier
key ingredient in legendary flying ointment recipes
heraldry star
its five-petal shape graces ancient noble shields
strawberry cousin
belongs to the rose family, like its fruity relatives
root tonic
once chewed to soothe sore throats and fevers
for instance

potentilla reptans — creeping cinquefoil plant native to europe, identified by five leaflets and yellow flowers

tormentil potentilla erecta — upright cinquefoil species found across temperate europe with distinctive four-petaled flowers

cinquefoil heraldry — five-petaled flower symbol used in medieval european coats of arms, including percy family crest

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