. Essentials of botany. Botany; Botany. 196 ESSENTIALS OF BOTANY sometimes outgrowths from the ovary, sometimes from the calyx, sometimes from an involucre. Their office is to attach the fruit to the hair or fur of passing animals. Often, as in sticktights (Fig. 147), the hooks are com- paratively weak, but in other eases, as in the cockle- bur (Fig. 147), and still more in the Martynia, the fruit of. Fig. 147. Burs. A, sticktights; B, sticktights, two segments (magnified); C, burdock; B, cockleburs. which in the green condition is much used for pickles, the hooks are exceedingly strong. Cockl
. Essentials of botany. Botany; Botany. 196 ESSENTIALS OF BOTANY sometimes outgrowths from the ovary, sometimes from the calyx, sometimes from an involucre. Their office is to attach the fruit to the hair or fur of passing animals. Often, as in sticktights (Fig. 147), the hooks are com- paratively weak, but in other eases, as in the cockle- bur (Fig. 147), and still more in the Martynia, the fruit of. Fig. 147. Burs. A, sticktights; B, sticktights, two segments (magnified); C, burdock; B, cockleburs. which in the green condition is much used for pickles, the hooks are exceedingly strong. Cockleburs can hardly be removed from the tails of horses and cattle, into which they have become matted, without cutting out all the hairs to which they are fastened. Why do bur-bearing plants often carry their fruit until late winter or early spring ?. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908
