File:Woody Dicot Stem Ray System in Four Year Liriodendron (36553835952).jpg
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Summary
[edit]DescriptionWoody Dicot Stem Ray System in Four Year Liriodendron (36553835952).jpg |
cross section: Sambucus stem magnification: 100x The vascular cylinder consists of a wide outer ring of primary and secondary phloem, a middle ring of vascular cambium and a deeper larger rings of primary and secondary xylem. Phloem bands of sieve tubes and companion cells are layered and interspaced with parenchyma cells masses and occasional small bundles of sclerenchyma cells. Small masses of calcium oxalate crystals are present. Xylem is separated from the pith by a starch sheath of dark staining parenchyma cells. The vascular cylinder is divided into narrow columns by radial bands of parenchymatous rays that extend from pith to phloem. Wide phloem rays taper as they dip into the xylem where they merge with the starch sheath. A large parenchymatous pith occupies the center of the stem. |
Date | |
Source | Woody Dicot Stem: Ray System in Four Year Liriodendron |
Author | Berkshire Community College Bioscience Image Library |
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This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/36553835952 (archive). It was reviewed on 23 June 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
23 June 2018
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current | 00:04, 23 June 2018 | ![]() | 3,264 × 1,840 (2.04 MB) | Meisam (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Date and time of data generation | 11:00, 10 February 2014 |
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Orientation | Normal |
Software used | Windows Photo Editor 10.0.10011.16384 |
File change date and time | 17:22, 21 August 2017 |
Date and time of digitizing | 11:00, 10 February 2014 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Color space | sRGB |