. A manual of botany. Botany. BRYOPHYTA—HEPATIC^ 107 what like the ribs of an umbrella. The archegonia are developed on its under surface in the angles between the ribs and the stalk {figs. 867 and 808). The elongation of the stalk is proceeding while the arche-. Fig. 866. Thallus of Marchantia with gemmffi cups, &, and antheridiophore, d. The upper figure Is a section through part of d. a,b, c, d, e, f. Autheridia in depressions in successive stages of development. After Kny. gonia are being developed, and they do not spread out freely till fertilisation is effected. The structure of the
. A manual of botany. Botany. BRYOPHYTA—HEPATIC^ 107 what like the ribs of an umbrella. The archegonia are developed on its under surface in the angles between the ribs and the stalk {figs. 867 and 808). The elongation of the stalk is proceeding while the arche-. Fig. 866. Thallus of Marchantia with gemmffi cups, &, and antheridiophore, d. The upper figure Is a section through part of d. a,b, c, d, e, f. Autheridia in depressions in successive stages of development. After Kny. gonia are being developed, and they do not spread out freely till fertilisation is effected. The structure of the archegonia has been already described. They are not embedded in the tissue of the receptacle as are the antheridia, but they are invested by a peculiar outgrowth frpHi it, called the perichcetium, which often surrounds a group. 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 Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
