Figure 16 in A late Eocene wood assemblage from the Crooked River Basin, Oregon, USA

Figure 16. Sapindaceae. Aesculus constabularisii sp. nov., UF 278-84887. A‒C. Vessels concentrated at the beginning of the growth ring, vessels solitary and in short radial multiples, TS. D. Simple perforation plates; fine fairly widely spaced helical thickenings throughout the vessel element, RLS. E, F. Simple perforation plates, procumbent ray cells, RLS. G. Crowded alternate intervessel pitting, TLS. H. Vessel-ray parenchyma pitting, RLS. I, J. Uniseriate rays, simple perforation plates (PP), widely spaced tyloses. K. Uniseriate rays, simple perforation plates (PP), crowded alternate intervessel pitting. L. Helical thickenings in vessel element at left, procumbent ray cells, small vessel-ray parenchyma pits (VRP). Scale bars=200 µm in A, B; 100 µm in C, I, J; 50 µm in D, K, L; 20 µm in E, F, G, H.