. Nature-study; a manual for teachers and students. Nature study. 39° NATURE-STUDY (Equisetum). Early in the spring there arise from a creep- ing rootstalli flesh-colored stalks with cone-shaped struct- ures on top. The stalk is jointed and at the joints are circles of scale-like leaves. The cone at the end bears the spores. These can be shaken out when ripe. There is another kind of stalk sent up later in the sea- son when the spore-bearing stalk is dead. This is green, is also jointed, and in the common field horsetail is much branched at the joints. The stem and the branches bear small scal
. Nature-study; a manual for teachers and students. Nature study. 39° NATURE-STUDY (Equisetum). Early in the spring there arise from a creep- ing rootstalli flesh-colored stalks with cone-shaped struct- ures on top. The stalk is jointed and at the joints are circles of scale-like leaves. The cone at the end bears the spores. These can be shaken out when ripe. There is another kind of stalk sent up later in the sea- son when the spore-bearing stalk is dead. This is green, is also jointed, and in the common field horsetail is much branched at the joints. The stem and the branches bear small scale- like leaves which, however, are not adapted to form starch, as they are not green. The stem is green, and it makes the starch which is stored in the rootstalk and in the new buds or shoots of the spore-bearing stalks. One species of Equisetum has unbranched stems, which are jointed and grooved and have a very gritty feel- ing due to silica in the tissues. On account of this gritti- ness the plant was formerly used for sandpaper, and was called the scouring rush. The mosses constitute another great class of flowerless plants. Gather with the children mosses of different Fig. i66. a Moss-covered 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 Holtz, Frederick Leopold, 1870-. New York, C. Scribner's Sons
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