en :
fr :
Phloem cells are the following:
sieve elements that are joined together to form sieve tubes,
companion cells, transfer cells: companion cells perform metabolic functions for the sieve elements (ATP or proteins synthesis...); transfer cells help sieve elements to transfer metabolites,
intermediary cells are sometimes present to help connections between bundle sheath, parenchyma cells and sieve elements.
APG II (Angiosperm Phylogeny Group) (10 galeries photos)
Album Herborisation
Orchidées (Orchidaceae, Asparagales, Monocots)
Fruits complexes
Fruits multiples