Starch granules possessing four diagnostic characteristics, likely S. jamesii. Nomarski optics (top three rows): Str. 4k (GS tool 4856) (A–G), Str. 5t (GS tool 3607.2) (H–N), Str. 5t (GS tool 3474.1) (O–R). Brightfield and polarized (bottom six rows): Str. 5t (GS tool 3474.1) (S), Str. 5u (GS tools 2674, 2673, 2674, 2667.1, 2347, 2346) (T–KK), Str. 6a (GS tools 3489, 505) (LL and MM). Panels with the same letter are images of the same granule in brightfield (Top) and polarized (Bottom).