The Compositae are represented by isolated fruits of various species.
In number of species Gramineae comes considerably after Compositae and FIG.
Climbing plants with gorgeous flowers are common, and there are numerous species of Compositae and about a hundred cinchonaceous plants.
In the central parts of the same table-land huge thisties (such as the Onopordum nervosunl), centaureas, artemisias and other Compositae are scattered in great piof usion.
In Compositae besides the involucre there are frequently chaffy and setose bracts at the base of each flower, and in Dipsacaceae a membranous tube surrounds each flower.
Advance has been along two lines, markedly in relation to insect-pollination, one of which has culminated in the hypogynous epipetalous bicarpellate forms with dorsiventral often large and loosely arranged flowers such as occur in Scrophulariaceae, and the other in the epigynous bicarpellate small-flowered families of which the Compositae represent the most elaborate type.
The limb of the calyx may appear as a rim, as in some Umbelliferae; or as pappus, in Compositae and Valeriana.
In Compositae the name involucre is applied to the bracts surrounding the head FIG.
Anton Kerner has shown that crowded inflorescences such as those of Compositae and Umbelliferae are especially adapted for geitonogamy.
In tropical regions, where Leguminosae is the leading order, grasses closely follow as the second, whilst in the warm and temperate regions of the northern hemisphere, in which Compositae takes the lead, Gramineae again occupies the second position.