. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 242 REPRODUCTION, VEGETABLE (VEGETABLE OVUM). every respect, those of the Ferns. The anthe- ridia of the Equisetaceae are placed, not upon Fig. 170. co° j/Lnfheridia of Equisetum, 300 dlam. a, ripe antheridium, from which the antherozoids are beginning to escape; b, unripe (Hofmeister.) the inferior surface, but along each margin of the principal branch of the prothallium. 88. Archcgonhun. — The archegonia were first discovered and figured by Milde * in Equisetum Telmateia, and have been since more com
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 242 REPRODUCTION, VEGETABLE (VEGETABLE OVUM). every respect, those of the Ferns. The anthe- ridia of the Equisetaceae are placed, not upon Fig. 170. co° j/Lnfheridia of Equisetum, 300 dlam. a, ripe antheridium, from which the antherozoids are beginning to escape; b, unripe (Hofmeister.) the inferior surface, but along each margin of the principal branch of the prothallium. 88. Archcgonhun. — The archegonia were first discovered and figured by Milde * in Equisetum Telmateia, and have been since more completely described by Hofmeister-)-and BischoffJ in two other species. The pro- jecting papilliform portion consists, according to the last-mentioned observer, of eight cells, of which the four lower, in apposition to each other, have the general form of truncated cones, each presenting two flattened surfaces by which it is united to its two neighbours. The upper, in the same relation to each other, are nearly cylindrical, but are slightly rounded at their summits. The axis of the organ is occupied by a quadrilateral intercellular passage. The whole is supported on a base, which consists of two or three rows of cells Fig. 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 Todd, Robert Bentley, 1809-1860. London, Sherwood, Gilbert, and Piper
Size: 1334px × 1873px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, booksubjectanatomy, booksubjectphysiology, booksubjectzoology
