["Plasmodesmata" are extremely fine cytoplasmic threads, one to few tenths of a micrometer wide, passing through walls of living plant cells and connecting cytoplasm of adjacent cells.]. The number of intercellular plasmodesmata, real plasmatic connections between cells, is, by Strugger, estimated to be up to 10-20000 (departing from one cell). Because these plasmodesmata are not single bonding-chains, but always having "bundled" a large number of them, all demands for intimate intercellular true connections can be satisfied.
[Outgrowths of the endoplasmic reticulum run in the plasmodesms through the specks (special connection sites between cells) of the cell wall and in this way connect adjacent cells.]