. Plants; a text-book of botany. Botany. MONOCOTYLEDONS AND DICOTYLEDONS 277 ray-flowers is the broad expanse supplied by a very much broadened axis, aM known as the disk (Fig. 261, A), which is closely packed with very numerous small and regular tubular flowers, known as disk-flowers (Fig. 201, e).. Fig. 262. The common dandelion ('7V/7'a,7-a^'/;«): I, two flower stalks; in one the head is closed, showing the double involucre, the inner erect, the outer reflexed, in the other the head open, showing that all the flowers are strap-shaped; J, a single flower showing inferior ovary.,pappus, corol
. Plants; a text-book of botany. Botany. MONOCOTYLEDONS AND DICOTYLEDONS 277 ray-flowers is the broad expanse supplied by a very much broadened axis, aM known as the disk (Fig. 261, A), which is closely packed with very numerous small and regular tubular flowers, known as disk-flowers (Fig. 201, e).. Fig. 262. The common dandelion ('7V/7'a,7-a^'/;«): I, two flower stalks; in one the head is closed, showing the double involucre, the inner erect, the outer reflexed, in the other the head open, showing that all the flowers are strap-shaped; J, a single flower showing inferior ovary.,pappus, corolla, stamen tube, and two-parted style; 3, a mature akene; 4, a head from which all but one of the akenes have been re- moved, showing the pitted receptacle and the prominent pappus beak.—After 'kuee. The division of labor among the flowers of a single head is plainly marked, and sometimes it becomes quite com- plex. The closely packed flowers have resulted in modify- ing the sepals extremely. Sometimes they disappear en- 36. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and company
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