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I will describe as examples the reproduction of a moss, a fern, and a dicotyledon.
2
We saw many tall graceful palms and tree ferns, but most of the trees were dicotyledons.
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The plane of saponin passes from the liliaceæ and allied groups to the rosales and higher dicotyledons.
4
Angiosperms are again divided into the monocotyledons, as the palms, and dicotyledons, which include most European trees.
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Such bases occur almost exclusively in the dicotyledons, generally in combination with malic, citric, tartaric or similar plant-acids.
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Many of the dicotyledons look alike.
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The parallel-veined leaves of monocotyledons have stems without distinction of wood, bark and pith; the netted-veined leaves of dicotyledons have exogenous stems.
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Among this fossil wood Heer made out the cypress, the silver pine, the poplar, the birch, and some dicotyledons with caducous leaves.
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In the dicotyledons root and shoot are represented as springing from the same point, and in monocotyledons from opposite poles in the seed.
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In rarely or never becoming perfectly straight, these cotyledons differ remarkably from the ultimate condition of the arched hypocotyls or epicotyls of dicotyledons.
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Still, to think that the monocotyledons evolved the familiar drupes, or stone fruits, on a parallel line to the dicotyledons is-amazing!
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It is often assumed that monocotyledons are descended from some lower group of dicotyledons, probably allied to that which includes the buttercup family.