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Starch grains from the Paglicci pestle-grinder (A–M) and from modern plants (N–R). Shown are (A–D) morphotype I, (E) morphotype I under polarized light, (F and G) morphotype II, (H) morphotype II under polarized light, (I and J) morphotype III, (K) morphotype IV, (L) morphotype V, (M) a crushed starch grain, (N and O) Avena barbata, (P and Q) millet (Panicoideae), and (R) Quercus cerris. (Scale bar: 10 μm.)
