Figure 1 from: Wilf P, Wing SL, Meyer HW, Rose JA, Saha R, Serre T, Cúneo NR, Donovan MP, Erwin DM, Gandolfo MA, González-Akre E, Herrera F, Hu S, Iglesias A, Johnson KR, Karim TS, Zou X (2021) An image dataset of cleared, x-rayed, and fossil leaves vetted to plant family for human and machine learning. PhytoKeys 187: 93-128. https://doi.org/10.3897/phytokeys.187.72350

Figure 1 Selected image pairs of confamilial extant and fossil (see Appendix 1) leaves from the dataset ABatesia floribunda Spruce ex. Benth. (Fabaceae), NCLC-W 6417, showing typical layout of a cleared-leaf slide with original annotations (other examples are cropped in this figure); source voucher Froes 12074, DS 291771 (at CAS), Amazonas, Brazil BFabaceae sp. CJ1, SGC-ICP-10173; Cerrejón mine, middle-late Paleocene of Guajira Peninsula, Colombia CCrataegus viridis L. (Rosaceae), NCLC-W 11951b; H. Meyer s/n (collected 1974, no other voucher), cultivated, California, USA DCrataegus copeana (Rosaceae), UCMP 3610; Florissant, late Eocene of Colorado, USA; H. Meyer photograph number 0420 ETetracentron sinense Oliv. (Trochodendraceae), S. Wing negative 71-002; E.H. Wilson 659, US 599036, Szechuan, China FZiziphoides flabellum (Trochodendraceae), USNM 560134; Mexican Hat, early Paleocene of Montana, USA GQuercus prinus L. (Fagaceae), NCLC-W 6137; H. Foster 8223, US 1730249, Florida, USA HFagopsis longifolia (Fagaceae), FLFO 003432A; Florissant, late Eocene of Colorado, USA IEucalyptus astringens (Maiden) Maiden (Myrtaceae), NCLC-W 10489; J.H. Maiden (9 November 1909), Western Australia, UC 437518 JEucalyptus frenguelliana (Myrtaceae), MPEF-Pb 2344; Laguna del Hunco, early Eocene of Chubut, Argentina KCercidiphyllum obtritum (Cercidiphyllaceae), DMNH 25061; Republic, early Eocene of Washington, USA LCercidiphyllum japonicum Siebold & Zucc. ex J.J.Hoffm. & J.H.Schult.bis (Cercidiphyllaceae), Axelrod cleared leaf 166; UCMP (no other voucher) MPlatanus racemosa Nutt. (Platanaceae), NCLC-H 6631; Handel s/n (collected 1985, no other voucher), California, USA NErlingdorfia montana (compound-leaved Platanaceae), DMNH 7642; Hell Creek Formation, Late Cretaceous of North Dakota, USA. Scale bars: centimeters as labeled (A, B, L, M); 1 cm when not labeled (C–K, N).