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A cross-section of a vascular bundle in the leaf of a dawn redwood (Metasequoia glyptostroboides)
November 7, 2014|
November 7, 2014
Can I just put in another request for these photos to come with a paragraph explaining a little more about what we're looking at? This is lovely, but what's interesting about it? I've read that the dawn redwood is believed to be more "evolutionarily old" -- that it has experienced fewer significant mutations since the Sequoioideae family first emerged. Do its structures shed light on long-term adaptations of tree vascular systems? For that matter, what are we really looking at? What cell/tissue types are in the picture, and how have they been stained different colors?