This pie chart visualizes the distribution of flower species from a CSV dataset, displaying the proportion of each species with colored slices and labels. The chart is built with D3.js v7, using `d3.pie()` to compute arc angles and `d3.arc()` to generate SVG paths, with an ordinal color scale assigning light green, blue, and orange to species groups. A legend on the right side, rendered as SVG rectangles and text, maps each color to its corresponding species, while `d3.rollups` aggregates the raw data into species counts before drawing.