. Elementary botany. Botany. Seeds of geum showing tlic booklets where the end of tlie style is kneed. grains are also devoured. an<l while many such seeds are destro\'ed. others are not injured, anel finally are lodged in suitable places for growth, remote from the etriginal localit}'. Thus animals willingly or unwillingly become agents in the (.lissemination of plants over the earth. Man in the development of coiumerce is often responsible fur the wide distribution of narmful as well as beneficial species. 894. Other plants are more independent, and mechanisms are employed for vio
. Elementary botany. Botany. Seeds of geum showing tlic booklets where the end of tlie style is kneed. grains are also devoured. an<l while many such seeds are destro\'ed. others are not injured, anel finally are lodged in suitable places for growth, remote from the etriginal localit}'. Thus animals willingly or unwillingly become agents in the (.lissemination of plants over the earth. Man in the development of coiumerce is often responsible fur the wide distribution of narmful as well as beneficial species. 894. Other plants are more independent, and mechanisms are employed for violently ejecting seeds from the pod or fruit. The unequal tension of the pods of the vetch (Vicia sativa) when drying causes the valves to contract unequally, and on a dry summer day the valves twist and pull in opposite directions until they suddenly snap apart, and the seeds are thrown forcibly for some tance. In the impatiens, or t'. Other plants have seeds provided with tufts of pappus, or hair-like masses, or wing-like which serve to buoy them up as they. 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 Atkinson, George Francis, 1854-1918. New York : H. Holt
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
