. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. 104 ACADEMIC Fio. 142.—a, (Taraxacum Defis-Ieonjs) own proper calyx, -which is often pappose (Gr. pappa, grandfather); that is, it has, instead of sepals, long, silky hairs, called pappus, and resembling an old man's heard; as in the Dandelion (Fig. 142), in which flie calyx, after flowering, lengthens and ripens into a long beak, which is tipped with the persistent pappus. The composite receptacle, sometimes Bat, sometimes cone-shaped, is also called a disk (but
. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. 104 ACADEMIC Fio. 142.—a, (Taraxacum Defis-Ieonjs) own proper calyx, -which is often pappose (Gr. pappa, grandfather); that is, it has, instead of sepals, long, silky hairs, called pappus, and resembling an old man's heard; as in the Dandelion (Fig. 142), in which flie calyx, after flowering, lengthens and ripens into a long beak, which is tipped with the persistent pappus. The composite receptacle, sometimes Bat, sometimes cone-shaped, is also called a disk (but it must be carefully distinguished from the true disk of single flowers, as seen in the Disciflorie). The bracts of the involucre resemble sepals, but they are quite distinct from sepals. In the Marigold (Pig. 143) the central florets (florets of the disk, as they are called) are tubular; those at the circumference are ligulate (strap-shaped); and because they diverge like sun-rays, they are called ray-flo- rets. In the Dandelion (Fig. 142) all the florets are ligulate. In the Thistle, Edel- weiss, and Artichoke (Fig. 214) all the florets are tubular. 224. In the Pea Order we find the Mimosa (Fig. 130) and the Clover (Fig. 132). In the Clo- ver the r a oh is often lengthens in growing, so that the head becomes a spike. 228. Taking the raceme as a model, the types are re- duced on the one hand through um- £S'*t"2? bel and spike to !i, 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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