. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. FiG. 220.—A, Bpiral vessel of Melon {Cucvmu Melo). B, an- nular vessel of do. D, moniliform pieve-duct of do, (dotted, porous, punctate). C, scalariform vessel of Fern {Pleris aqui- Una). the. Fi8. 221.—A, section of young Celandine (Chelidonium mtijiw); showing the laticiferous canal /. B, same, older; canal formed into a. branching duct and de- tached from the plant. Pine, milk in the Milkweed, etc.; after a little, however, the secretion often deposits a thin layer, whi
. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. FiG. 220.—A, Bpiral vessel of Melon {Cucvmu Melo). B, an- nular vessel of do. D, moniliform pieve-duct of do, (dotted, porous, punctate). C, scalariform vessel of Fern {Pleris aqui- Una). the. Fi8. 221.—A, section of young Celandine (Chelidonium mtijiw); showing the laticiferous canal /. B, same, older; canal formed into a. branching duct and de- tached from the plant. Pine, milk in the Milkweed, etc.; after a little, however, the secretion often deposits a thin layer, which forms a wall, and the canal simu- lates a true vessel, or duct, which may be detached (Fig. 221, B). 370. Tissue-Systems.—Sachs proposes to systematize tissues as follows : 1. Fundamental, consisting of the un- modified tissues found in all except the lowest plants ; 2. Epidermal, consisting of houndary- cells (surface of root, stem, leaf), with their appendages (hair, stomata, etc.); 3. Fibro-vascular, consisting of the thread-like masses abounding in the higher 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 Ketchum, Annie Chambers, 1824-1904. Philadelphia, J. B. Lippincott company
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