Fig. 6: Anatomical structure of Group V wood.

Identification result: Ulmus sect. Madocarpus. a Transverse Section, 100×: growth ring boundaries distinct; wood ring-porous; latewood vessels clusters common, and in tangential bands; apotracheal axial parenchyma diffuse and diffuse-in-aggregates, axial parenchyma in narrow bands or lines up to three cells wide. b Transverse Section, 200×: latewood vessels clusters common, and in tangential bands; apotracheal axial parenchyma diffuse and diffuse-in-aggregates, axial parenchyma in narrow bands or lines up to three cells wide. c Radial Section, 100×, and d Radial Section, 200×: helical thickenings only in narrower vessel elements; simple perforation plates; all ray cells procumbent. e Tangential Section, 100×, and f Tangential Section, 200×: larger rays commonly 4- to 10-seriate.