Fig. 31From: The adjustment of China endemic Heptacodium miconioides Rehd. to temperate zone of PolandLongitudinal radial section of the 3 years old stem in Heptacodium myconioides with visible secretions in ray parenchyma. Designations: pi – pith; ph – phloem; se – secretions in pith cells. Scale bar 500 µmBack to article page