Archive image from page 313 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana05todd Year: 1859 238 REPRODUCTION, VEGETABLE (VEGETABLE OVUM). nema), resembling in all its relations to the future plant, the mycelium of the Fungi and Lichens. 73. First period.—Germination of the —The spore of the Mosses is a nucleated cell, the solid contents of which are granular, and consist of protein compounds, starch and dex- trine. From the budding out of its membrane, results a hollow filament, which,as it lengthens, divides by a succession of transverse se
Archive image from page 313 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana05todd Year: 1859 238 REPRODUCTION, VEGETABLE (VEGETABLE OVUM). nema), resembling in all its relations to the future plant, the mycelium of the Fungi and Lichens. 73. First period.—Germination of the —The spore of the Mosses is a nucleated cell, the solid contents of which are granular, and consist of protein compounds, starch and dex- trine. From the budding out of its membrane, results a hollow filament, which,as it lengthens, divides by a succession of transverse septa. It then begins to branch in all directions, each branch resembling the parent, and rami- fying in the same manner. Hence results an entangled network of filaments of a brilliant green colour, which spreads over the moist surface on which the spores have been sown. At length some of the filaments are observed to give off lateral branches which differ from those previously formed in being more slender and containing less chlorophylle. In some of these the terminal cell, after dividing four or five times, becomes globular, and is transformed into the rudiment of a leafy axis. 74. Development of the antheridia and arche- gonia, — These organs are usually found in groups, which are situated either at the termi- nation of the stem or branches, or in the axils of the leaves. In either case they are surrounded (with the exception, in many genera, of the axillary antheridia) by special arrangements of modified leaves (involucres). Those involucres which surround the antheridia are called perigonia, and are composed of leaves much smaller than the ordinary leaves of the stem. Those leaves which enclose the archegonia, small at first, attain a large size as the fruit approaches maturity. In some (hermaphro- dite) mosses, both antheridia and archegonia are contained in one involucre. 75. In the very diminutive plants belonging to the genus Phascum, which we select as ex- ample
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