Groupe : certain

All the certains descriptors are in this group. Those that are uncertains or the descriptors that are not of systematic value are not here.

Liste des descripteurs

  1. von Mohl's classification
  2. shape of fibrous part in transverse section
  3. wide metaxylem element
  4. number of wide metaxylem element per fibrous vascular bundle
  5. phytoliths
  6. phytoliths distribution in central cylinder
  7. fibrous dorsal cap centrifugal differentiation
  8. ground parenchyma sustained growth
  9. ground parenchyma of the central cylinder
  10. cortex
  11. superficial protective layer (sub-epidermal)
  12. multicellular epidermal hair
  13. epidermal cells
  14. tangential elongation and anticlinal divisions of subcortical parenchyma cells
  15. radial elongation of the fibrous dorsal cap (in subcortical zone)
  16. fibrous bundles in central cylinder
  17. fibrous ventral cap
  18. number of phloem strand
  19. little fibrous vascular bundles (bridges)
  20. radiating parenchyma
  21. tabular parenchyma
  22. end wall slope
  23. specialisation value
  24. metaphloem sieve plate