Phaseolus coccineus (Scarlet Runner Bean)
Dublin Core
Title
Phaseolus coccineus (Scarlet Runner Bean)
Subject
Starch grains viewed under 400x transmitted, cross-polarized light (CPL) and CPL with γ filter.
Description
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 forms
Lamellae: not visible
Fissures: common - bold longitudinal (diagnostic for Fabaceae starch grains)
Size: ranging from 5 - 25 microns.
Plant part: seed
Surface: smooth-wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bold, yet distorted medially as both y and x forms
Lamellae: not visible
Fissures: common - bold longitudinal (diagnostic for Fabaceae starch grains)
Size: ranging from 5 - 25 microns.
Plant part: seed
Source
A.L.X. - modern scarlet runner bean sample
Creator
S. Prado and A.L.X.
Date
June 22 2022
Relation
Part of SSHRC Partnership Engagement Grant: Collaborative Archaeologies, Decolonized Foodways
Type
Starch Grain
Identifier
Starch Grain
Files
Collection
Citation
S. Prado and A.L.X., “Phaseolus coccineus (Scarlet Runner Bean),” McMaster Microbotanical Research Database, accessed April 25, 2024, https://macmicrobot.omeka.net/items/show/24.