. Elementary botany. Botany. LIVER IVORTS: MARCHANTIA. HS midrib, as shown in figs. 176, 180. The growing point of the thallus is situated in the little depression at ihe free end. If we examine the upper surface with a hand lens we see diamond-shaped areas, and at the center of each of these areas are the openings known as the stomates. 317. Antheridial plants.—One of the male plants is figured at 176. It bears curious structures, each held aloft by a short stalk. These are the an- theridial recep- tacles (or male gametophores). Each one is cir- cular, thick, and 4' shaped some- what like a b
. Elementary botany. Botany. LIVER IVORTS: MARCHANTIA. HS midrib, as shown in figs. 176, 180. The growing point of the thallus is situated in the little depression at ihe free end. If we examine the upper surface with a hand lens we see diamond-shaped areas, and at the center of each of these areas are the openings known as the stomates. 317. Antheridial plants.—One of the male plants is figured at 176. It bears curious structures, each held aloft by a short stalk. These are the an- theridial recep- tacles (or male gametophores). Each one is cir- cular, thick, and 4' shaped some- what like a bi- convex lens. The upper surface is marked by radiating fur- rows, and the margin is crenate. Then we note, on careful examination of the upper surface, that there are numerous minute openings. If we make a thin section of this structure perpen-. Fig. 176. Male plant of marchantia bearing 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 Atkinson, George Francis, 1854-1918. New York, H. Holt
Size: 1667px × 1499px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjectbotany
