FIGURE 2 in Numerical taxonomy and genus-species identification of Czekanowskiales in China based on machine learning

FIGURE 2. Fossils and schematic diagram of the leaf morphology and epidermal structure of Czekanowskia les. (A) Phoenicopsis angustifolia; (B) Czekanowskia rigida; (C) Phoenicopsis speciosa; (D) schematic diagram of the leaf morphology of Czekanowskiales, dotted line ab indicating the leaf cluster length (or lobe length), dotted line cd indicating the leaf cluster width, line ef indicating the lobe width, and angle cbd indicating the angle between bc and bd (the most lateral lobes); (E) schematic diagram of the epidermal structure of Czekanowskiales. Scale bars (A-C) equal 1 cm.