3 Equisetum Calamites and Annularia are members of the

Last updated: 2/21/2024

3 Equisetum Calamites and Annularia are members of the Sphenopsids They have a unique anatomy stellar organization meaning they are composed of bundles of tissue arranged in a circle see figure below They also display jointing in the stems very obvious in Equisetum Sketch Calamites a Carboniferous sphenopsid some of which reached over 10 meters in height and identify on your sketch the bundles of tissue and if you can find it a characteristic joint where the tissue bundles pinch out and then expand