VariaÃ§Ã£o cambial em Serjania caracasana (Sapindaceae): enfoque na adequaÃ§Ã£o terminolÃ³gica
The corpus lignosum compositum is assigned in this work as Ã¢â‚¬Å“compound vascular cylinderÃ¢â‚¬Â and is typical for the lianas from the Sapindaceae family. In the stem of the Serjania caracasana (Jacq.) Willd. this cambial variant is represented by a central vascular cylinder surrounded by eight peripheral vascular cylinders. There is no consensus about the terminology that involves this structure making difficult an anatomical approach without a terminological adequacy. In this study, through the anatomical analysis, it was verified that even before the vascularization there are indications of a compound vascular structure with the formation of eight lobes that surround the central area. With the beginning of the vascularization of each lobe the central area is called Ã¢â‚¬Å“vascular cylinderÃ¢â‚¬Â. The term adopted here Ã¢â‚¬Å“compound vascular cylinderÃ¢â‚¬Â is proper, because it reflects the homology between the vascular cylinders in S. caracasana through the procambial origin. This term shows a descriptive attribute that enables the concept understanding and keeps the linguistic equivalence with the original term Ã¢â‚¬â€œ corpus lignosum compositum. We reject the term Ã¢â‚¬Å“multistelar stemÃ¢â‚¬Â and Ã¢â‚¬Å“polystelic stemÃ¢â‚¬Â because the results obtained here indicate the presence of a single stele in the stem.