Buttercup stem. Coloured scanning electron micro- graph (SEM) of a transverse (cross) section through part of a stem of a Buttercup, Ranunculus repens Stock Photo - Alamy
File:Ranunculus Root Cross Section.png - Wikipedia
Stems | Biology 343 – Plants and People
Cross section of a immature Ranunculus root - UWDC - UW-Madison Libraries
Transverse section of part of a young stem of a buttercup … | Flickr