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Table 2 Starch morphotypes. Detailed description of the starch morphotypes recovered from the dental calculus of the ancient community

From: Lifestyle of a Roman Imperial community: ethnobotanical evidence from dental calculus of the Ager Curensis inhabitants

Morphotype Morphologic and morphometric description Taxonomic group
I Irregular ovoid to reniform granules; size range. 20–52 μm in length and 17–38 μm in width; clear concentric lamellae; hilum is obscured; presence of a longitudinal cleft Fabaceae
II Pyriform to reniform granules; size range, 19–35 μm in length and 16–27 μm in width; faintly visible lamellae; invisible hilum Fagaceae
III Multifaceted polyhedral units on one side and dome shaped on the other one; individual granule size, 5–14 μm in length and 5–12 in width; indistinct hilum and lamellae Poeae
IV Polyhedral granules with pentagonal or hexagonal faces and rounded off edges; size range, 3–16 μm in length and 2–15 in width; centric distinct hilum; radial fissures; indistinct lamellae Paniceae
V Discoidal granules; size range, 6–36 μm in length and 4–30 μm in width; indistinct hilum; concentric, complete and distinct lamellae; sometimes, longitudinal fissures were present. Triticeae
VI Ovoidal granules with flattened surfaces; size range, 8–20 μm in length and 7–17 μm in width; indistinct lamellae; deep radial fissures starting from a centric hilum Sorghum sp.