. Text-book of botany, morphological and physiological. Botany. Fig. 440.—Diagram of Caprifoliacese; A Ley- cesteria, a Lomcera, b Symphoricarpus. FIG. 441.—Diagram of Par- nassia (Saxifragaceae). FIG. 442.—Diagram of Campanulaceae ; A Campanula, a Lobelia. the large number of flowers in which the andrcecium consists of more than one whorl (as Fig. 451). The mode of expressing the gynaeceum Cn(_m) is intended to show that very commonly the number of carpels is fewer than 5 or 4 (or 8 as the case may be); m may be of any value from o to n. In the majority of gamopetalous orders and elsewhe
. Text-book of botany, morphological and physiological. Botany. Fig. 440.—Diagram of Caprifoliacese; A Ley- cesteria, a Lomcera, b Symphoricarpus. FIG. 441.—Diagram of Par- nassia (Saxifragaceae). FIG. 442.—Diagram of Campanulaceae ; A Campanula, a Lobelia. the large number of flowers in which the andrcecium consists of more than one whorl (as Fig. 451). The mode of expressing the gynaeceum Cn(_m) is intended to show that very commonly the number of carpels is fewer than 5 or 4 (or 8 as the case may be); m may be of any value from o to n. In the majority of gamopetalous orders and elsewhere there are very commonly only two carpels; and in this case they stand in a median line posterior and anterior; but on-the hypothesis that the typical gynaeceum consists of five alternating carpels and has been reduced to two by abortion, one must stand in the median position in front, the other obliquely behind. A similar difficulty is also presented when the gynaeceum consists of three or of only one carpel. It would carry us too far to detail the reasons which nevertheless determine me to retain the formula above given for the gynaeceum of flowers of this description; it need only be mentioned that species or genera with the typical five carpels occur in the most diverse families and orders where a smaller number is the normal one. The diagrams Figs. 440-450 represent a selection of cases which can be reduced (if no further reference is made to the consideration mentioned above) to the general formula which here assumes the simpler expression Sn Pn Stn Cn(_my. 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 Sachs, Julius, 1832-1897; Vines, Sydney Howard, 1849-1934. ed. and tr. Oxford, Clarendon press
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1882
