Browse Items (7 total)
- Tags: polarized light
Sort by:
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 …
Tags: broad bean, ellipsoid, extinction cross, faba, non-lenticular, ovoid, polarized light, starch, starch grain, vicia
Typha latifolia (Bulrush)
Shape: ovoid/spherical (non-lenticular).
Surface: smooth-rugose
Outer wall: single
Hilum: centric - semi-eccentric
Extinction cross: bowed X shape cross.
Lamellae: absent
Fissures: often present (centric y shape)
Size: within this sample ~6…
Surface: smooth-rugose
Outer wall: single
Hilum: centric - semi-eccentric
Extinction cross: bowed X shape cross.
Lamellae: absent
Fissures: often present (centric y shape)
Size: within this sample ~6…
Tags: bulrush, circular, extinction cross, latifolia, ovate, polarized light, starch, starch grain, typha
Pisum sativum (Pea)
Shape: ovoid and/or elongated, non-lenticular starch grains.
Surface: wrinkled
Outer wall: single
Hilum: centric
Extinction cross: central, "often elongated on the same axis as the fissure" (Henry et al. 2009: Table 2)
Lamellae: sometimes…
Surface: wrinkled
Outer wall: single
Hilum: centric
Extinction cross: central, "often elongated on the same axis as the fissure" (Henry et al. 2009: Table 2)
Lamellae: sometimes…
Tags: extinction cross, lamellae, ovate, pea, pisum, polarized light, sativum, starch, starch grain, wrinkled
Lens culinaris (Lentil)
Shape: ovoid and sometimes kidney shaped/reniform (non-lenticular)
Surface: smooth - wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bilaterally symmetrical and often diffuse (Henry et al. 2009: Table 2).
Lamellae:…
Surface: smooth - wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bilaterally symmetrical and often diffuse (Henry et al. 2009: Table 2).
Lamellae:…
Cicer arietinum (Chickpea)
Shape: ovoid / spherical starch grains (non-lenticular). Some forms were almost reniform.
Size: ~12 - 15 microns in this sample.
Surface: smooth
Outer wall: single
Hilum: centric / semi-eccentric
Extinction cross: bilaterally symmetrical, with…
Size: ~12 - 15 microns in this sample.
Surface: smooth
Outer wall: single
Hilum: centric / semi-eccentric
Extinction cross: bilaterally symmetrical, with…
Avena sativa (Oat)
Shape: Faceted Lenticular - angular/circular in plan view, biconvex in side view.
Surface: smooth
Outer wall: single
Hilum: centric
Extinction cross: radially symmetrical, bold
Lamellae: absent
Fissures: absent
Plant part: grain
Diagnostic…
Surface: smooth
Outer wall: single
Hilum: centric
Extinction cross: radially symmetrical, bold
Lamellae: absent
Fissures: absent
Plant part: grain
Diagnostic…
Tags: avena, centric hilum, extinction cross, faceted, oat, polarized light, sativa, starch, starch grain
Triticum dicoccum (Emmer)
Shape: Lenticular - circular/sub-circular in plan view, biconvex in side view.
Surface: smooth
Outer wall: single
Hilum: centric
Extinction cross: radially symmetrical
Lamellae: faint/not visible
Fissures: rare - centric
Plant part:…
Surface: smooth
Outer wall: single
Hilum: centric
Extinction cross: radially symmetrical
Lamellae: faint/not visible
Fissures: rare - centric
Plant part:…
Tags: dicoccum, globular, polarized light, starch, starch grain, triticum, y filter