File:Herbaceous Dicot Stem Perivascular Fibers in Pelargonium (35567254581).jpg
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| Description |
Cross section: Pelargonium Common name: Storksbill Geranium Magnification: 100x Unlike most herbaceous dicots, Pelargonium is capable of secondary growth in dermal and vascular tissues. A cortex of parenchyma cells is separated from the stele by a well defined starch sheath. Immediately interior to the starch sheath is a heavy ring of red staining sclerenchymal perivascular fibers, that encircles and supports the underlying vascular tissues. Deep to this layer is a band of phloem and deep to this a zone of xylem. While Pelargonium produces a small amount of secondary phloem and xylem it may be difficult to differentiate from the primary vascular tissues. The center of the stem is occupied by a pith of parenchyma cells that contain numerous starch storing amyloplasts. |
| Date | |
| Source | Herbaceous Dicot Stem: Perivascular Fibers in Pelargonium |
| Author | Berkshire Community College Bioscience Image Library |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/35567254581 (archive). It was reviewed on 23 June 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
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| current | 00:02, 23 June 2018 | | 3,264 × 1,840 (2.26 MB) | Meisam (talk | contribs) | Transferred from Flickr via #flickr2commons |
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