Horse Chestnut in Germination Small 192×320 Medium 385×640 Large 616×1024 Download Tiff Original 1443×2400 | (617.9 KB) Description Horse-chestnut in germination; footstalks are formed to the cotyledons, pushing out in their lengthening the growing parts. Keywords Botany, flowers, plants, pollen, pollination, seed Galleries Trees: D-H Source: Asa Gray The Elements of Botany for Beginners and for Schools (New York, Cincinnati, Chicago: American Book Co., 1887)