Browse Items (23 total)

Solanum_tuberosum_starch_40x_3a.jpg
Shape: conical/triangular/ovoid and sphere shaped starch grains (transitory)
Surface: smooth
Outer wall: single
Hilum: eccentric, rarely open
Extinction cross: well defined, arms slightly bent
Lamellae: present
Fissures: rare
Size: ranging…

P_coccineus_40x_starch_1a.jpg
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…

Zea_mays_Haud_white_dried_40x_starch_5a.jpg
Shape: polygonal and spheroid (transitory)
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 -…

scirp_lac_10x_hairs3.jpg
Acicular hairs (articulated)

t_mono_40x_starch_2a.jpg
Shape: lenticular - circular/sub-circular in plan view, biconvex in side view.
Surface: smooth
Outer wall: single
Hilum: centric, closed
Extinction cross: radially symmetrical
Lamellae: faint
Fissures: absent
Plant part: grain

Supporting…

scirp_lac_10x_cones.jpg
Cone phytoliths typical of sedges

Supporting literature:
Mehra, PN and Sharma, OP 1965 Epidermal silica ceIls in the Cyperaceae. Botanical Gazette 126: 53-58.

Ollendorf, A.L., 1992. Toward a classification scheme of sedge (Cyperaceae)…

v_faba_windsor_broad_40x_starch_1a.jpg
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 …

typha_lat_starch_40x_2a.jpg
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…

p_sativum_40x_starch_02a.jpg
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…

lens_culin_starch_40x_3a.jpg
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:…
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