Fig. 1
From: The fruit morphometric variation and fruit type evolution of the stone oaks (Fagaceae, Lithocarpus)
The structure of two fruit types and collected morphometric parameters on the longitudinal sectioned fruit. a-c and d to f represent AC and ER fruit respectively. The black scale bar and the white line in each image represent 1 cm and the longitudinal axis respectively. The original structure is displayed on the left, and the diagrammatic representation is on the right of the longitudinal axis. In a & d, the structures of cupule (C), receptacle (R), pericarp (P) and seed (S) were depicted on the left side of the fruit longitudinal section. In b & e, Ap, Ar, and As are the area of pericarp, receptacle and seed respectively, which were parameters for estimating the volume of pericarp (Vp), receptacle (Vr) and seed space (Vs). In c & f, Ls, Lp, and Lr are length of seed space, the internal lengths of pericarp and receptacle respectively, which were collected for estimating the coverage to seed by pericarp (Sp) and receptacle (Sr) and seed surface area (Ss)