. Plants and their uses; an introduction to botany. Botany; Botany, Economic. :S78 VARIOlfS PLANT GROUPS times petals do not appear at all, but when they do it is as distinct projections from the torus, comparable to the first rudiments of foliage leaves as they form near the tip of a developing shoot. The same is true of sepals, stamens, and carpels, as illustrated in Figs. 298, 299 I. If, however, a gam- osepalous calyx, a monadelphous andrcecium, or a compound pistil is to be produced, it happens sooner or later that those. Fig. 298.—Flower <jf Rose iRusa alpina, Rose Family,-, Rosacea)
. Plants and their uses; an introduction to botany. Botany; Botany, Economic. :S78 VARIOlfS PLANT GROUPS times petals do not appear at all, but when they do it is as distinct projections from the torus, comparable to the first rudiments of foliage leaves as they form near the tip of a developing shoot. The same is true of sepals, stamens, and carpels, as illustrated in Figs. 298, 299 I. If, however, a gam- osepalous calyx, a monadelphous andrcecium, or a compound pistil is to be produced, it happens sooner or later that those. Fig. 298.—Flower <jf Rose iRusa alpina, Rose Family,-, Rosacea) in early stages, eut vertieally and enlarged. -4, the sepals (k) are well de- veloped, but the petaLs (c) and the stamens (a) are just appearing as minute knobs. B, sepals, petals, and stamens further advanced: and the pistils (g) just appearing as knobs on the dome of the stem-tip. C, later stage. D, still later stage in which the parts are still developing in the bud. (Payer.) parts of the ring which connect the original projections begin to grow and the distinct ])arts are carried up on the rim or the tip of a tube or united mass of organs. Flowers which as they develop retain the original distinct- ness of their petals, or which develop none at all, are termed archichlamydeous.^ Such flowers, we have seen, characterize the crowfoot series which includes all the orders we have studied and a number of others resembling them in the pe- culiarity noted. 130. The heath family (Ericaceae). Examples; wintergreen ' Ar"chi-chhi-my(re-ous < Gr. iirchi, first; chlaiin/s, mantle; imply- ing that the corolla, likened to a mantle, retains its original 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 Sargent, Frederick Leroy, 1863-. New York, H. Holt and Company
Size: 1473px × 1696px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
