1. - Transverse section of a Convolute leaf

2. Marsilea quadrifolia. Rhizome. Amphiphloic siphonostele. Transverse section

3. There are two or more different dissolvable areas by transverse section of the saturated ancient timber.

4.  · This smooth-shelled, Anomphalous bellerophontoid shows very faint traces of growth lines with crescent-shaped aperture in the transverse section

5. An Amphiphloic siphonostele can be called a: solenostele – if the cylinder of vascular tissue contains no more than one leaf gap in any transverse section (i.e