. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. 70 MORPHOLOGY OP SPERMATOPHYTBS nospermy, the ovuliferous structures were interpreted in terms of Angiosperms, the ovule being regarded as a pistil, and the related parts being variously interpreted. Brown's conclusion as to a naked ovule was derived from a comparison of the so-. FiG. 55.—Ovulate structures of various Conifers : i Agathis aiistralis, ovuliferous scale from inner side (M, winged seed); S, longitudinal section of i; S, Araucaria excelsa, longitudinal section of scale, etc., also showing the out
. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. 70 MORPHOLOGY OP SPERMATOPHYTBS nospermy, the ovuliferous structures were interpreted in terms of Angiosperms, the ovule being regarded as a pistil, and the related parts being variously interpreted. Brown's conclusion as to a naked ovule was derived from a comparison of the so-. FiG. 55.—Ovulate structures of various Conifers : i Agathis aiistralis, ovuliferous scale from inner side (M, winged seed); S, longitudinal section of i; S, Araucaria excelsa, longitudinal section of scale, etc., also showing the outgrowth (i) above the seed; 4, Ctmninghamia Sinensis, ovuliferous scale, showing three ovules (JfeT), and an outgrowth (i); 5, Miarocaohrys tetragona, longitudinal section of ovuliferous scale, also showing the arillus (a) and the outgrowth (i); 6, Cryptomma Japonica, longi- tudinal section of part of the strobilus; 7 and 8, Cupressus Lawsoniana, showing a young cone {7) and a later stage (S); 9, Podocarpus maa-ophylla, longitudinal sec- tion, showing ovulate structures and aril (ar).—From Englbr and Prantl's Nat. Pflanzenfam. called " ovule " (nucellus) of Cycads and Conifers Avith the ovule of Angiosperms. His corollary was that the ovuliferous scale represents an open carpel, but his statement that this so- called carpel is a leaf in the axil of a bract called forth strong dissent. In 1839 Schleiden ^ called attention to the fact that Brown's " folium in axilla folii " is a morphological impossibility, and that the ovuliferous scale is a flattened axis in the form of a placenta, a view concurred in later by Baillon, Dickson, Stras- burger, and Masters, but without regarding the axis as a pla- centa, the axial nature of placentas in general being one of Schleiden's peculiar 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
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