. Comparative morphology of Fungi. Fungi. UREDINALES 555 rupture, laying bare the sorus (Hunter, 1926). In Calyptospora Goepper- tiana, the pycnia are formed normally but the pycnospores regularly abort. In Gallowaya pinicola (B. O. Dodge, 1925) on Pinus virginiana, vestigial pycnia (spermogonia) are formed but they fail to rupture the overlying tissue or to form pycnospores (spermatia). Pycnospores are ovoid or spherical, very small (2 to 4^u) or, if bacilli- form, up to by 9ju; their membrane is hyaline and smooth; their content poor in cytoplasm and reserve materials; the nucleus is com
. Comparative morphology of Fungi. Fungi. UREDINALES 555 rupture, laying bare the sorus (Hunter, 1926). In Calyptospora Goepper- tiana, the pycnia are formed normally but the pycnospores regularly abort. In Gallowaya pinicola (B. O. Dodge, 1925) on Pinus virginiana, vestigial pycnia (spermogonia) are formed but they fail to rupture the overlying tissue or to form pycnospores (spermatia). Pycnospores are ovoid or spherical, very small (2 to 4^u) or, if bacilli- form, up to by 9ju; their membrane is hyaline and smooth; their content poor in cytoplasm and reserve materials; the nucleus is comparatively large, sometimes occupying two-thirds of the cell volume. They accumu- late as a slimy mass in the cavity formed by the periphyses and are repeatedly extruded; in some species, as Cronartium ribicola, Endophyl-. 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 Gäumann, Ernst Albert, 1893-1963; Dodge, Carroll William, 1895-. New York [etc. ] McGraw-Hill Book Company, Inc.
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishern, booksubjectfungi
