. Foundations of Botany. Botany. TYPES OF CRYPTOGAMS; THALLOPHYTES 271 329. The Fruit. — Look for small lance-shaped disks seated upon the thallus. Xote the approximate sizes and color within and without. These disks are called apothecia. Note the very minute black specks (spermogones) which are scattered in the surface of the thallus. Pick one from the thallus, with as little of the thallus as possible, and examine under high power. It may be macerated in a drop of potash solution and crushed under the cover-glass. If the contents are not easily denned, they may then be made more opaque by a
. Foundations of Botany. Botany. TYPES OF CRYPTOGAMS; THALLOPHYTES 271 329. The Fruit. — Look for small lance-shaped disks seated upon the thallus. Xote the approximate sizes and color within and without. These disks are called apothecia. Note the very minute black specks (spermogones) which are scattered in the surface of the thallus. Pick one from the thallus, with as little of the thallus as possible, and examine under high power. It may be macerated in a drop of potash solution and crushed under the cover-glass. If the contents are not easily denned, they may then be made more opaque by a drop of acetic acid or a stain. The minute colorless bodies con- tained in the spermogones 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
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