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Since nomads travel light and it probably was easy to make new equipment, tools
would have been discarded when the people moved. In regions where good raw
material was scarce, however, suitable rock was carried over great distances.
The earliest monocotyledons were most probably marsh plants with stout
rhizomes. Indeed, the majority of Alismales, as well as almost all the
Nymphaeales (except Ceratophyllun), are typically aquatic geo- phytes (
herbaceous plants with ...
Subclass Asteridae Mostly herbaceous plants. Vessels always present. Stomata
of various types, most frequently without subsidiary cells. Flowers usually
bisexual. Gynoecium coenocarpous (probably morphologically always
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review