. Morphology of gymnosperms. Gymnosperms; Plant morphology. 364 MORPHOLOGY OF GYMNOSPERMS Beccari (4). Since that time there has been some fruitful investi- gation, but the comparative inaccessibility of the material has made the investigations less numerous and complete than the importance of the group would justify. I. The vegetative organs The species of Ephedra are low straggling shrubs, with long- jointed and fluted green stems, and opposite scalelike leaves connate in a two-toothed sheath. True fohage leaves are generally lacking, and the whole habit is suggestive of a shrubby Equisetum
. Morphology of gymnosperms. Gymnosperms; Plant morphology. 364 MORPHOLOGY OF GYMNOSPERMS Beccari (4). Since that time there has been some fruitful investi- gation, but the comparative inaccessibility of the material has made the investigations less numerous and complete than the importance of the group would justify. I. The vegetative organs The species of Ephedra are low straggling shrubs, with long- jointed and fluted green stems, and opposite scalelike leaves connate in a two-toothed sheath. True fohage leaves are generally lacking, and the whole habit is suggestive of a shrubby Equisetum (fig. 404).. Fig. 404.—Ephedra sp., growing near Tucson, Arizona.—From photograph by D. T. MacDougal. Welwitschia is a plant of remarkable habit (figs. 405-407). The very tough body has the shape of a gigantic radish, which rises little above the surface of the ground, and whose crown is sometimes to meters in circiunference. The broad top is more or less con- cave and somewhat two-lobed, and from the deep horizontal groove. 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; Coulter, John Merle, 1851-1928. Morphology of spermatophytes. Part I. Gymnosperms. Chicago, University of Chicago Press
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