Photo of the stalks (petioles) of a rhubarb (Rheum rhabarbarum) plant taken at Old Economy Village. Rhubarb stalks can be used in pies as they contain far fewer toxic substances than the leaves.Galleries:Old Economy Village, Other Herbaceous PlantsKeywords:ambridge, culinary plant, herbaceous plant, old economy village, pennsylvania, perennial, petioles, polygonaceae, rheum rhabarbarum, rhubarb, stalksPhoto Location: Old Economy Village, Ambridge, PennsylvaniaPhotographer: Dr. Roy WinkelmanDate of Photo: 06/04/2011Device Make: CanonDevice Model: Canon EOS 5D Mark IIExposure Time: 0.0166667F Number: 11Original Dimensions: 5616×3744Picture Orientation: LandscapeGPS Coordinates: 40°35'49.49"N 80°13'22.20"WPicture Number: 17733
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