. The algae. Algae. Fig. 144 Delesseria sanguinea. A, plant. B, apex of thallus to show cell arrangement ( x 258). C, first stage in formation of carpogonial branch. 5ri= first group of sterile cells ( X408). D, later stage of same, cp = carpogonial branch, 5c= support cell, 5fi= first, and 5f2= second group of sterile cells ( X408). E, mature carpogonial branch. 5C= support cell. 5?^= first sterile branch, 5^2= second sterile branch ( x 720). F, formation of antheridia in related genus, Nitophyllum. G, transverse section of mature cystocarp in the related genus Nitophyllum. H, tetraspores ( x
. The algae. Algae. Fig. 144 Delesseria sanguinea. A, plant. B, apex of thallus to show cell arrangement ( x 258). C, first stage in formation of carpogonial branch. 5ri= first group of sterile cells ( X408). D, later stage of same, cp = carpogonial branch, 5c= support cell, 5fi= first, and 5f2= second group of sterile cells ( X408). E, mature carpogonial branch. 5C= support cell. 5?^= first sterile branch, 5^2= second sterile branch ( x 720). F, formation of antheridia in related genus, Nitophyllum. G, transverse section of mature cystocarp in the related genus Nitophyllum. H, tetraspores ( x 360). (A, F, G, after Tilden; B-D, after Kylin; E, H, after Svedelius.) Ceramiaceae: Callithamnion (calli, beauty; thamnion, small bush). Fig. 145 This is a genus of very beautiful and delicate plants that possess filamentous, radially branched fronds which are either mono- siphonous or else corticated at the base, the cortication being formed by rhizoidal filaments. The plants are commonly attached by rhizoids and in many species the branchlets terminate in long slender hairs. The cells of the vegetative thallus are usually multi- nucleate, and in C. byssoideum there are protoplasmic pseudopodia projecting internally from the ends of the cells, and although these 254. 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 Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press
Size: 1563px × 1599px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae
