. Practical botany. Botany. LEADING FAMILIES OF FLO WEEING PLANTS 369 represented in the United States, and some genera, such as the ironweed, the golden-rod and aster, the rosinweed, the sunflower, coreopsis, and Helenium, are either exclusively American or at any rate very characteristic of our flora. The prairies and the Great Plains especially abound in riG. 303. Flower cluster and flowers of yarrow j4, flower cluster; fi, section of flower cluster; C, a ray flower; Z), a disk flower. a, anthers; ch, chaff of disk; d, disk flowers; o, ovary; re, corollas of ray flowers; 6', st
. Practical botany. Botany. LEADING FAMILIES OF FLO WEEING PLANTS 369 represented in the United States, and some genera, such as the ironweed, the golden-rod and aster, the rosinweed, the sunflower, coreopsis, and Helenium, are either exclusively American or at any rate very characteristic of our flora. The prairies and the Great Plains especially abound in riG. 303. Flower cluster and flowers of yarrow j4, flower cluster; fi, section of flower cluster; C, a ray flower; Z), a disk flower. a, anthers; ch, chaff of disk; d, disk flowers; o, ovary; re, corollas of ray flowers; 6', stigmas; tc, corolla of tubular flower. A, B, C, seven times natural size; D, eighteen times natural size Food plants are rather rare among Compositce. Lettuce is the most generally cultivated, but chicory and endive, dande- lion,-oyster plant, the globe artichoke, and the Jerusalem arti- choke are of some value as food. 3IediciiiaI Compositce are not uncommon. A few of the most familiar are arnica, boneset, camomile, coltsfoot, dandelion, tansy, and wormwood. Ornamental plants of this family are so numerous that only a small proportion of them can here be mentioned. Among. 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; Caldwell, Otis William, 1869- joint author. Boston, New York [etc. ] Ginn and company
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