The Eusporangiatae; the Comparative Morphology of the Ophioglossaceae And Marattiaceae
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In our eReader you can find the full English version of the book. Read The Eusporangiatae; the Comparative Morphology of the Ophioglossaceae And Marattiaceae 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 Eusporangiatae; the Comparative Morphology of the Ophioglossaceae And Marattiaceae
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156.
A-D. Four transverse sections of a young sporophyte of D.jenmani. X20. Section C shows stem apex.
E. The apical meristem with apical cell of stem, x, and a leaf initial, /. Xi8o.
F-I. Four sections from the same series, but taken lower down. X20. Figs. F, G, show fusion of double leaf trace with central stele, m, mucilage ducts. Between the mucilage ducts in G can be seen the small commissural strand.
this point the section of the central stele forms a crescent of tissue, most of which has... not passed beyond the procambial stage. This crescent-shaped mass is evi- dently composed of two parts and represents mainly the basal undivided bundles of the two youngest leaves. Tracheary tissue has begun to develop in the older of these two masses. Occupying the space within this crescentic stele are three young mucilage canals, but none are yet developed in the cortical tissue of the stem.
Within this central space there can also be seen the section of a small isolated group THE OLDER SPOROPHYTE 173 of procambial cells.
What to read after The Eusporangiatae; the Comparative Morphology of the Ophioglossaceae And Marattiaceae?
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:
156.
A-D. Four transverse sections of a young sporophyte of D.jenmani. X20. Section C shows stem apex.
E. The apical meristem with apical cell of stem, x, and a leaf initial, /. Xi8o.
F-I. Four sections from the same series, but taken lower down. X20. Figs. F, G, show fusion of double leaf trace with central stele, m, mucilage ducts. Between the mucilage ducts in G can be seen the small commissural strand.
this point the section of the central stele forms a crescent of tissue, most of which has... not passed beyond the procambial stage. This crescent-shaped mass is evi- dently composed of two parts and represents mainly the basal undivided bundles of the two youngest leaves. Tracheary tissue has begun to develop in the older of these two masses. Occupying the space within this crescentic stele are three young mucilage canals, but none are yet developed in the cortical tissue of the stem.
Within this central space there can also be seen the section of a small isolated group THE OLDER SPOROPHYTE 173 of procambial cells.
What to read after The Eusporangiatae; the Comparative Morphology of the Ophioglossaceae And Marattiaceae?
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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