. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. Fig. 16.—Ovulate sporophylls of various Cyoads: A, Oycas revoluta; B, Cycas droin- alis; C, Cycas Nbrmanbyana; D, Dioon edwle \ E, Bncephalartos Preissii; F. Zamia inUgrifolia\ G, Ceratozamia Mexicana.—A, after Sachs; C, after F. Voir MtJLLEE; £, after Miquel ; F, after Eiohaed ; JS, D, 6, drawn for Englek and Pkantl's Nat. Pflanzenfam., from which the entire plate is taken. of the pollen tubes this whole region of the nueellus disorgan- izes, leaving more or less of a cavity between the pollen chamber and th
. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. Fig. 16.—Ovulate sporophylls of various Cyoads: A, Oycas revoluta; B, Cycas droin- alis; C, Cycas Nbrmanbyana; D, Dioon edwle \ E, Bncephalartos Preissii; F. Zamia inUgrifolia\ G, Ceratozamia Mexicana.—A, after Sachs; C, after F. Voir MtJLLEE; £, after Miquel ; F, after Eiohaed ; JS, D, 6, drawn for Englek and Pkantl's Nat. Pflanzenfam., from which the entire plate is taken. of the pollen tubes this whole region of the nueellus disorgan- izes, leaving more or less of a cavity between the pollen chamber and the embryo sac. Into this cavity numerous pollen tubes are often seen dangling from the pollen chamber (Fig. 18), a. Fig. 17.—Stangeria paradoxa, longitudi- nal section of ovule, x 1: g, embryo Biio containing endosperm; s, layer of "sporogenous tissue" around the em- bryo sac; jD, pollen chamber.—After 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 Coulter, John Merle, 1851-1928; Chamberlain, Charles Joseph, b. 1863. New York, D. Appleton
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Keywords: ., bookauthorcoulterj, bookcentury1900, bookdecade1900, bookyear1901
