. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. Fig. 213. — Prothallium (gametophyte) of Aspidium. The under surface, as viewed through a microscope. The necks of eight archegonia are indicated just below the notch of the heart. The hair-like outgrowths are rhizoids. At the base of the prothallium, among the rhizoids and to the right of them, numerous antheridia are indicated.. Fig. 214. — Archegonia of a fern, showing the manner of development. At the right is an archegonium ready for fertilization. Fr

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. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. Fig. 213. — Prothallium (gametophyte) of Aspidium. The under surface, as viewed through a microscope. The necks of eight archegonia are indicated just below the notch of the heart. The hair-like outgrowths are rhizoids. At the base of the prothallium, among the rhizoids and to the right of them, numerous antheridia are indicated.. Fig. 214. — Archegonia of a fern, showing the manner of development. At the right is an archegonium ready for fertilization. Fr
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Image ID: RDHEAC
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. Fig. 213. — Prothallium (gametophyte) of Aspidium. The under surface, as viewed through a microscope. The necks of eight archegonia are indicated just below the notch of the heart. The hair-like outgrowths are rhizoids. At the base of the prothallium, among the rhizoids and to the right of them, numerous antheridia are indicated.. Fig. 214. — Archegonia of a fern, showing the manner of development. At the right is an archegonium ready for fertilization. From its neck is excreted a sub- stance which attracts to it the swimming spores which come near. (421). 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 work.. Coulter, John G. (John Gaylord), b. 1876. New York, American Book Co

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