. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 477. Fig. 331. Fig. 332. Fig. 331. A common species of the Mint family: A, inflorescence of the skullcap (Scutellaria). Note the square stem, opposite leaves. Why are all the flowers facing one way? B, flower enlarged, showing the two-lobed under lip and the three-lobed upper lip which conceals the sporophylls. C, section of the flower. Ovary four-Iobed, stamens cohering with the corolla and anthers concealed with the stigma beneath upper lip. Purpose of the crest, c, on the calyx? Fig. 332. Flower of the sage (Salvia): A, flowe
. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 477. Fig. 331. Fig. 332. Fig. 331. A common species of the Mint family: A, inflorescence of the skullcap (Scutellaria). Note the square stem, opposite leaves. Why are all the flowers facing one way? B, flower enlarged, showing the two-lobed under lip and the three-lobed upper lip which conceals the sporophylls. C, section of the flower. Ovary four-Iobed, stamens cohering with the corolla and anthers concealed with the stigma beneath upper lip. Purpose of the crest, c, on the calyx? Fig. 332. Flower of the sage (Salvia): A, flower after the anthers have shed their spores. The two-lobed stigma is bending down into the position occupied by them. B, sectional view of the flower, showing four-lobed ovary with nectar glands at the base, stigma not receptive and bent back. As the insect enters the flower he pushes against the sterile lobe of the anther, t, and thus causes the fertile lobe, a, to swing down upon his back. /, filament 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 Curtis, Carlton Clarence, 1864-1945. New York, H. Holt
Size: 1523px × 1641px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
