Rhubarb (Rheum rhabarbarum) is a species of plant in the family Polygonaceae. It is a herbaceous perennial growing from short, thick rhizomes. It produces large poisonous leaves that are somewhat triangular, with long fleshy edible stalks and small flowers grouped in large compound leafy greenish-white to rose-red inflorescences.
Thick, usually reddish, solid leafstalks. Large, crinkled, heart shaped, non-hairy leaves at base of plant. Tall flower stalk. Grow to 1.2m (4 ft).
https://inaturalist.ca/observations?project_id=69401&taxon_id=51251&place_id=any&verifiable=any