. A text-book of elementary botany. Botany. 42 ELEMENTARY BOTANY. 10. A conspicuous irregularity in the flower is caused by the production of appendages of various kinds. One petal in the Violet is prolonged so as to form a spur; this organ is tubular and generally contains nectar, or sweet substance se- creted by the flower. Some species of Dicentra are two-spurred. All the petals of the Columbine have spurs. Sometimes there is only a gentle swelling or blunt outward projection (as in Adlumia), which is denoted by the word saccate. Sometimes sepals or petals are eared or crested; or they have
. A text-book of elementary botany. Botany. 42 ELEMENTARY BOTANY. 10. A conspicuous irregularity in the flower is caused by the production of appendages of various kinds. One petal in the Violet is prolonged so as to form a spur; this organ is tubular and generally contains nectar, or sweet substance se- creted by the flower. Some species of Dicentra are two-spurred. All the petals of the Columbine have spurs. Sometimes there is only a gentle swelling or blunt outward projection (as in Adlumia), which is denoted by the word saccate. Sometimes sepals or petals are eared or crested; or they have, like the pink, a projection (corona) at the point where the claw or narrow part of the petal joins with the spreading lobe or limb. 11. When there is no adhesion or growing together of the calyx and corolla, the former is plainly inserted below the points of insertion of the corolla, stamens and pistils. In such cases (Fig. 61) the calyx is said to be free or inferior; or Pistil , the calyx and corolla are said to be hypogsmous (Gr. hypo, under ; gyna, pistil). The cohesion may ^yAnther. PeduTicle Fig. 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 Kellerman, William Ashbrook, 1850-1908. Philadelphia, Eldredge & Brother
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