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Phaseolus coccineus (Scarlet Runner Bean)
Shape: ovoid - ellipsoid / kidney shaped (reniform) starch grains and sphere shaped starch grains (transitory)
Surface: smooth-wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bold, yet distorted medially as both y and x…
Surface: smooth-wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bold, yet distorted medially as both y and x…
Vicia faba (Broad Bean)
Shape: ovaoid / ellipsoid starch grains (non-lenticular).
Surface: smooth-wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bold, often with more than 4 arms
Lamellae: absent (rarely visible)
Fissures: present - often longitudinal …
Surface: smooth-wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bold, often with more than 4 arms
Lamellae: absent (rarely visible)
Fissures: present - often longitudinal …