. A handbook of cryptogamic botany. Cryptogams. FILICES The sessile or shortly stalked, roundish, but unsymmetrical sporanges are not strictly epidermal in their origin. They bear on one side of their apex a modified annulus in the form of a group of cells of peculiar form, and dehisce vertically on the other side. Todea (Willd.) presents no difference between the fertile and sterile leaves ; while in Osmunda(L.)thefructification has the appearance of a con- tinuous or interrupted panicle,. Fig. 67.—Mucilage-gland from Osmunda. r£^a/w (magnified). (After Gardiner.) from the entire absorption o
. A handbook of cryptogamic botany. Cryptogams. FILICES The sessile or shortly stalked, roundish, but unsymmetrical sporanges are not strictly epidermal in their origin. They bear on one side of their apex a modified annulus in the form of a group of cells of peculiar form, and dehisce vertically on the other side. Todea (Willd.) presents no difference between the fertile and sterile leaves ; while in Osmunda(L.)thefructification has the appearance of a con- tinuous or interrupted panicle,. Fig. 67.—Mucilage-gland from Osmunda. r£^a/w (magnified). (After Gardiner.) from the entire absorption of the mesophyll of the fertile part of the leaf. In some species of Todea the leaf con- sists of only a single layer of cells. In Osmunda there are. 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 Bennett, Alfred W. (Alfred William), 1833-1902; Murray, George Robert Milne, 1858-. London, New York, Longmans, Green, and Co.
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