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Monocot Stems
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| The individual vascular bundles can be seen in this fossil palm (genus Palmoxylon) specimen from Wyoming. Each vascular bundle is surrounded by numerous fibers, which thicken into a cap shape on one end. The fibers provide structural support. The empty spaces represent vessel for water conduction and sometimes air spaces. The phloem tissue would be found between the vessels and the bundle cap. This image was taken at 40x. |
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| The fossil Palmoxylon pictured above comes from the same location in Wyoming as the previous specimen. Note this palm has much larger bundle caps in comparison to the vascular tissues. |
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| The colorful vascular bundles in this trunk of fossil Palmoxylon from Louisiana exhibit great cellular detail. The trunk is pictured below. |
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