The Development of the Ostrich Fern, Onoclea Struthiopteris
The Development of the Ostrich Fern, Onoclea Struthiopteris
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In our eReader you can find the full English version of the book. Read The Development of the Ostrich Fern, Onoclea Struthiopteris Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Development of the Ostrich Fern, Onoclea Struthiopteris
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At certain points the cells become longer and their contents less dense, so that the places appear more transparent tlian the suiTounding tissue. The cells cease to divide, or at least do so more slowly than the surrounding ones. By the rapid gi'owth of the sur- rounding tissue and the consequent widening of the stem, certain of these cells are torn apart, leaving intercellular spaces that become rapidly larger as the stem widens. These spaces are bounded by loosely arranged cells whose free en...ds are rounded and with nearly colorless contents containing a few definite granules and a distinct nucleus.
From these cells trichomes of diflerent fonns are developed. These may be in the form of simple hairs or scales of considerable size. Sometimes, but not very often, they may be tipped with a pear-shaped glandular cell, filled with dense granular mucilage.
The mass of trichomes filling up the cavity now dries up, and the cells bordering them have their walls somewhat thickened and changed to a brown color.
What to read after The Development of the Ostrich Fern, Onoclea Struthiopteris?
You can find similar books in the "Read Also" column, or choose other free books by Campbell Douglas Houghton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
At certain points the cells become longer and their contents less dense, so that the places appear more transparent tlian the suiTounding tissue. The cells cease to divide, or at least do so more slowly than the surrounding ones. By the rapid gi'owth of the sur- rounding tissue and the consequent widening of the stem, certain of these cells are torn apart, leaving intercellular spaces that become rapidly larger as the stem widens. These spaces are bounded by loosely arranged cells whose free en...ds are rounded and with nearly colorless contents containing a few definite granules and a distinct nucleus.
From these cells trichomes of diflerent fonns are developed. These may be in the form of simple hairs or scales of considerable size. Sometimes, but not very often, they may be tipped with a pear-shaped glandular cell, filled with dense granular mucilage.
The mass of trichomes filling up the cavity now dries up, and the cells bordering them have their walls somewhat thickened and changed to a brown color.
What to read after The Development of the Ostrich Fern, Onoclea Struthiopteris?
You can find similar books in the "Read Also" column, or choose other free books by Campbell Douglas Houghton to read onlineMoreLess
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