Text-book of structural and physiological botany . highly developed Monocotyledons from their stately arborescent stems and their large leaves, the insignificance of their flowers reminds one of the lower families, and the habit of many species even of the Grasses; while the structure of the flower and inflorescence allies them to the Arales (Figs. 469, 470, 471). The stem is usually simple, rarely dichotomously branched, as in the doom-palm, generally erect, sometimes climbing, as in the rattan, and commonly bears a crown of leaves only at its summit. The leaves, often called fronds, are Fig.
Text-book of structural and physiological botany . highly developed Monocotyledons from their stately arborescent stems and their large leaves, the insignificance of their flowers reminds one of the lower families, and the habit of many species even of the Grasses; while the structure of the flower and inflorescence allies them to the Arales (Figs. 469, 470, 471). The stem is usually simple, rarely dichotomously branched, as in the doom-palm, generally erect, sometimes climbing, as in the rattan, and commonly bears a crown of leaves only at its summit. The leaves, often called fronds, are Fig. 469. —Flower fan-shaped in the fan-palms, pinnate in the feather- 4 ^^^ European 1 ^ T-i-i rx^-,., dwarf-palm, palms, rarely undivided. The flowers are placed on Chamcerops Jm- a simple or branched rachis, which is surrounded in ^•• vernation by a common envelope or spathe; they are originally perfect, but almost always become, in the course of development, diclinous or polygamous from the abortion of stamens or pistils. The six perianth-. 352 SUnicttiral and Physiological Botany. leaves are in two whorls. The stamens, three, six, or more in number,are adherent to the perianth-segments. The superior ovary is either uni-
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