Calyx Small 128×320 Medium 255×640 Large 408×1024 Download Tiff Original 638×1600 | (1.0 MB) Description Calyx of Sowthistle, showing pappus of downy hairs. Keywords Botany, calyx, flower, pappus, seed down Galleries Flower Anatomy Source: Asa Gray, How Plants Grow, A Simple Introduction to Structural Botany (New York:American Book Company, 1858) 166
