. Botanische Jahrbu?cher fu?r Systematik, Pflanzengeschichte und Pflanzengeographie. Botany; Plantengeografie; Paleobotanie; Taxonomie; Pflanzen. Fig. 7. Pistils in the Sect. Eumitella, showing shape and extent of fusion with the axis, a M. diphylla, b M. stauropetala, c and d M. stauropetala var. stenopetala, e and f M. iriftda, g M. trißda var. violaeea, h M. diversifolia. X ^0- one on each side, and finally in Var. violaeea a disappearance of all the divisions of the petal leaving only the middle portion. This reduction of the petals has followed hand in hand with the reduction of the size
. Botanische Jahrbu?cher fu?r Systematik, Pflanzengeschichte und Pflanzengeographie. Botany; Plantengeografie; Paleobotanie; Taxonomie; Pflanzen. Fig. 7. Pistils in the Sect. Eumitella, showing shape and extent of fusion with the axis, a M. diphylla, b M. stauropetala, c and d M. stauropetala var. stenopetala, e and f M. iriftda, g M. trißda var. violaeea, h M. diversifolia. X ^0- one on each side, and finally in Var. violaeea a disappearance of all the divisions of the petal leaving only the middle portion. This reduction of the petals has followed hand in hand with the reduction of the size of the rest of the flower. An exactly similar course can be traced in the. Fig. 8. Pistils in the Sect. Mitellastra, showing shape and extent of fusion with the axis, a , h M. caulescens, e M. Bretveri, d M. ovalis, e M. pentandra, f M. pauciflo?'a, g X ^0. M. stauropetala group, ending up in a similar manner in small entire petals in individuals of Var. stenopetala. Somewhat more divergent is M. diversifolia with many-veined, 3—5-cleft petals, but all the other floral structures show unmistakable connections with M. trifiddi and the species has undoubtedly arisen from this branch. Turning to the other Section of which M. nuda is the origin, we. 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 Engler, Adolf, 1844-1930. Stuttgart : Schweizerbart
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1881
