Fig. 3: Anatomical structure of Group II wood. | npj Heritage Science

Fig. 3: Anatomical structure of Group II wood.

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

Fig. 3: Anatomical structure of Group II wood.

Identification result: Pinus sect. Cembra. a Transverse Section, 100×: growth ring boundaries slightly distinct; gradual transition from earlywood to latewood; earlywood tracheids with thin walls and latewood tracheids with thick walls; axial intercellular canals. b Transverse Section, 400×: earlywood tracheids with thin walls. c Radial Section, 400×, and d Radial Section, 400×: ray cells comprising ray tracheids and ray parenchyma cells; Cross-field pitting Window-like-type. e Tangential Section, 100×, and f Tangential Section, 200×: uniseriate ray and fusiform ray; radial intercellular canals.

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