Browse Items (12 total)
- Tags: extinction cross
Quercus sp. (Oak, acorn)
Surface: smooth
Outer wall: single
Hilum: semi-eccentric
Extinction cross: bent arms
Lamellae: absent
Fissures: small longitudinal natural fissure
Plant part: nut
Supporting literature:
Weber, S. and Price,…
Tags: acorn, eccentric, extinction cross, fagaceae, hilum, oak, ovoid, quercus, starch, starch grain
Hordeum vulgare (var. Bere) (Barley)
Surface: smooth, sometimes with very faint dimples. Surface facets may be present, or a slight indentation at the hilum.
Outer wall: single
Hilum: centric &…
Tags: barley, bere, extinction cross, grain, hilum, hordeum, lenticular, starch, vulgare
Avena sativa (Oat)
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
Cicer arietinum (Chickpea)
Size: ~12 - 15 microns in this sample.
Surface: smooth
Outer wall: single
Hilum: centric / semi-eccentric
Extinction cross: bilaterally symmetrical, with…
Lens culinaris (Lentil)
Surface: smooth - wrinkled
Outer wall: single
Hilum: centric
Extinction cross: bilaterally symmetrical and often diffuse (Henry et al. 2009: Table 2).
Lamellae:…
Pisum sativum (Pea)
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
Typha latifolia (Bulrush)
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
Vicia faba (Broad Bean)
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
Triticum monococcum (Einkorn)
Surface: smooth
Outer wall: single
Hilum: centric, closed
Extinction cross: radially symmetrical
Lamellae: faint
Fissures: absent
Plant part: grain
Supporting…
Tags: einkorn, extinction cross, lenticular, monococcum, starch, starch grain, triticum, wheat
Zea mays (Haudenosaunee White Corn - dried)
Surface: rugose
Outer wall: double
Hilum: centric, often open
Extinction cross: well defined, arms are straight or slightly bent (reflecting uneven surface)
Lamellae: absent
Fissures: present -…
Tags: corn, double border, double wall, extinction cross, haudenosaunee, mays, PEG, polygonal, starch grain, zea