Fig. 21From: The adjustment of China endemic Heptacodium miconioides Rehd. to temperate zone of PolandTransverse radial section with cambium and phloem layers in the 1-year stem H5 of Heptacodium myconioides. Designations: ca – cambium; cc – companion cells; cr – crystals; cs – crystal sand; en – endoderm; pa – axial parenchyma; pf – phloem fibers; pr – pith rays; st – starch grains; sv – sieve tubes; xy – xylem. Scale bars 100 µmBack to article page