Fig. 4: Anatomical structure of Group III wood. | npj Heritage Science

Fig. 4: Anatomical structure of Group III wood.

From: Timber species identification and selection principles of wooden components in the Sunjialou Cultural Relic Building, Nanyang City

Fig. 4: Anatomical structure of Group III wood.

Identification result: Cunninghamia lanceolate. a Transverse Section, 100×: growth ring boundaries distinct; gradual transition from earlywood to latewood; earlywood tracheids with thin walls and latewood tracheids with thick walls; axial parenchyma diffuse and tangential banded; insect holes. b Transverse Section, 400×: earlywood tracheids with thin walls. c Radial Section, 400×, and d Radial Section, 400×: only ray parenchyma cells; Cross-field pitting Taxodioid-type (2–4 pittings). e Tangential Section, 400×, and f Tangential Section, 400× : uniseriate ray.

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