Of Citrus and Flowers On Tuesday at Sotheby 's Institute of Art , 1334 York Avenue -LRB- 72nd Street -RRB- , Dr. Marcus Kohler of the University of Applied Studies in Neubrandenburg , Germany , will speak from 5 to 6 p.m. on the history of oranges , lemons and limes and at 6:30 p.m. on floral table decorations .