RFT60224–An image of Moss Protonemata. When a moss first grows from the spore, it grows as a protonema which develops into a leafy gametophore, vintage line dr
RFMBAW9W–Light photomicrograph of Moss protonemata whole mount seen through microscope
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RMRE2G2B–. Fundamentals of botany. Botany. LIFE HISTORY OF A MOSS 20S bearing cells. Thus photosynthesis may be carried on, though of course to a very limited degree. The sporo- phyte of the true mosses seems to occupy an intermediate position between those of Sphagnum and the fern, and, as we ascend from the lower form in Sphagnum to the higher form in the fern, the transition is largely characterized by a decrease in the amount of fertile tissue and an increase in the relative amount of sterile tissue of the sporophytes.. Fig. 148.—Protonemata of a moss bearing young gametophyte buds. 190. Vegetative
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RFEB9F67–Light photomicrograph of Moss protonemata whole mount seen through microscope
RMRDRD1A–. Introduction to botany. Botany. Mosses, Ferns, and Horsetails. 291 the time of its maturity; that is, until the capsule contain- ing the ripened asexual spores has been formed at its apex. The asexual spores are capable of germination as soon as formed, but, instead of producing a leafy moss plant imme- diately, they first form filamentous outgrowths called pro- tonemata, resembling the filamentous Algae (Fig. 152, A and B). Finally buds (Fig. 152, B) are formed on the protonemata, which develop into the leafy moss plant.. Fig. 152. A, germinating moss spore; B, protonema produced by further
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