. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. THE FLOWER 207 225. The vertical order. — The difference in vertical arrangement is an important one. Bear in mind that flowers of this type have the ovary inferior, that is, inserted under the other organs (Figs. 296, 304), which are then said to be superior, or epigynous, a word which, as you know from the prefix epi (47), means over or above the pistil. To make the matter clear, the two sets of terms employed for describing the position of the ovary are given below in p
. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. THE FLOWER 207 225. The vertical order. — The difference in vertical arrangement is an important one. Bear in mind that flowers of this type have the ovary inferior, that is, inserted under the other organs (Figs. 296, 304), which are then said to be superior, or epigynous, a word which, as you know from the prefix epi (47), means over or above the pistil. To make the matter clear, the two sets of terms employed for describing the position of the ovary are given below in parallel columns: Hypogynous Ovary superior Calyx or perianth inferior Epigynous Ovary inferior Calyx or perianth superior The epigynous arrangement is considered as marking a higher stage of floral development than the hypogynous, which is characteristic of a more simple and primitive structure. 226. Dissection of a dicotyl flower. — Sketch a blossom of quince or apple, fuchsia, evening primrose, etc., first from the out- side, then from the inside, and then in vertical section, labeling the parts as in your other sketches. No- tice in the pear or apple how the ovary is sunk in the hollo wed-out receptacle. Where are the other parts attached ? Are they inferior or superior ? Hold up a petal to the light and examine its venation through a lens. (Use for this purpose a petal from a flower that has stood in red ink for two or three hours.) Is it parallel-veined or net-. Figs. 295-296. — Evening primrose, dicotyl flower with in- ferior ovary: 295, exterior view; 296, longitudinal section, showing vertical arrangement 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 Andrews, Eliza Frances, b. 1840; Lloyd, Francis Ernest, 1868-1947. ed. New York, Cincinnati [etc. ] American book company
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