Note 16 — Chapter XII · [1].
Reading edition
The term metaxylem may be conveniently applied to the primary xylem other than protoxylem; the latter is usually but by no means invariably characterised by spiral thickening bands.
Reading edition
The term metaxylem may be conveniently applied to the primary xylem other than protoxylem; the latter is usually but by no means invariably characterised by spiral thickening bands.