. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. 18 MORPHOLOGY OF SPBRMATOPHYTBS Between the base of the beak and the wall of the embryo sac the nucellar tissue is loose, and at the time of the development. 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 e
. Morphology of spermatophytes. [Part I. Gymnosperms]. Gymnosperms; Plant morphology. 18 MORPHOLOGY OF SPBRMATOPHYTBS Between the base of the beak and the wall of the embryo sac the nucellar tissue is loose, and at the time of the development. 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. 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
