. The principles of botany, as exemplified in the phanerogamia. Botany; Botany; Phanerogams; 1854. THE INrLOllESCKNCE. 121 When the floral axis of a raceme is so shortened, and the peduncles of the lower flowers are so elongated, as to elevate them to the same level as the upper flowers, a corymb is formed, as in Achillea millefolium. If the floral axis of a raceme be suppressed altogether, so that the peduncles all start from the same point, we have an umbel, (Fig. 26.) Fig. 26. Fig. h c Tig. 2S. Diagrams of a corymb 6, and of an umbel c. If the secondary floral axis of a raceme gives ri
. The principles of botany, as exemplified in the phanerogamia. Botany; Botany; Phanerogams; 1854. THE INrLOllESCKNCE. 121 When the floral axis of a raceme is so shortened, and the peduncles of the lower flowers are so elongated, as to elevate them to the same level as the upper flowers, a corymb is formed, as in Achillea millefolium. If the floral axis of a raceme be suppressed altogether, so that the peduncles all start from the same point, we have an umbel, (Fig. 26.) Fig. 26. Fig. h c Tig. 2S. Diagrams of a corymb 6, and of an umbel c. If the secondary floral axis of a raceme gives rise to tertiary ones, the raceme is branching, and forms a panicle, (Fig. 27.) The panicle ordinarily assumes a , that is to say, the flbral axes become shorter in proportion as they approach the summit. If on the contrary, the floral axes of the middle part are the longest, the inflorescence takes a more or less ovoid form, and is denominated a thyrsus, as in the lilac. The definite and determinate inflorescence. The lowest developments of this form of inflorescence, is that in which a single floral axis is terminated by a solitary flower, of which the Anemone nemorosa furnishes a good example. When such an inflorescence branches, the branches do not grow in an 11*. 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 Coultas, Harland, d. 1877. Philadelphia : King & Baird
Size: 2163px × 1156px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1854
