. Elementary botany. Botany. PLANT FAMILIES: COMPOSITE. 291 tubular flowers and the ray flowers. In the tubular flowers the corolla is united to form a slender tube, which is fivcrnotched at the end, representing the five petals. In the ray flowers the corolla is extended on one side into a strap-shaped expansion. Together these strap-shaped corollas form the "rays" of the head. The corolla is split down on one side, which permits the end then to expand and form the "; This is a. Fig. 393- Ray flower of Aster no vse" anglise. Fig. 394- Tubular flower of aster. Fi
. Elementary botany. Botany. PLANT FAMILIES: COMPOSITE. 291 tubular flowers and the ray flowers. In the tubular flowers the corolla is united to form a slender tube, which is fivcrnotched at the end, representing the five petals. In the ray flowers the corolla is extended on one side into a strap-shaped expansion. Together these strap-shaped corollas form the "rays" of the head. The corolla is split down on one side, which permits the end then to expand and form the "; This is a. Fig. 393- Ray flower of Aster no vse" anglise. Fig. 394- Tubular flower of aster. Fig. 395. Tubular flower opened to show syn- genecious stamens. Fig. 396. Syngenecio us stamens opened to show style and two stigmas. ligula, or more correctly speaking &. false ligula. In fact the ray flower is bilabiate. By counting the "teeth" of the false ligula there are found only three, which indicates that the strap here is made up of only three parts of the 5-merous corolla. The two other limbs of the corolla are rudimentary, or suppressed, on the opposite side of the tube. True ligulate flowers are found in the chicory, dandelion, or in the hieracium, where the five points are present on the end of the ligula. 554. The calyx tube in the aster, as in all of the composites, is united with the ovary, while the limb is free. In the aster, as in many others, the limb is divided into slender bristles, the pappus. (In some of the composites the pappus is in the form of. 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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