Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 481
expansion, which is termed theprotliallium, varies in its configuration, in different species; but itsessential structure always remains the same. From its under sur-face are developed not merely the root-fibres (a, h), which serve atthe same time to fix it in the soil and to supply it with… … IMV^- Development of the Antheridia and Antherozoids of Pterisserrulata:—A, projection of one of the cells of the prothallium,showing the antheridial cell 6, with its sperm-cells e, withinthe cavity of the original cell «,—B, Antheridium com-pletely developed; a, wall of antheridial cell; e,…
Microscopy · Biology
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