Authors

Common Shape Description

 

 

 

Seed or fruit shape in 2-dimension (2D)

Round

Oval

Egg-shaped

Teardrop-shapedTeardrop-shapedTeardrop-shapedTeardrop-shaped

 

Appears circular, with length  and width roughly the  same.

A rounded shape with one axis longer than the other. The widest point is roughly halfway along the length of the seed or fruit.

Widest point is towards one end of the seed or fruit. The other end tapers gradually to a curved end.

Widest point is toward one end of the seed or fruit. The other end tapers sharply to a pointed end.

 

 

Rectangular

Oblong

Wedge-shaped

Linear

  

Sides and ends straight and parallel; corners relatively sharp.

An elongate shape with sides more or less parallel. Corners are rounded.

Sides straight but not parallel, tapering towards one end.

Extremely long and narrow, with sides usually parallel.

Extremely long and narrow, with sides usually parallel.Extremely long and narrow, with sides usually parallel.

 

D-shaped

Kidney-shaped

Heart-shaped

TriangularTriangular

In rest position, has one straight margin and one curved margin, resembling the shape of the letter D.

In rest position, has one margin with a convex curve and one side which is concave or indented.

One edge has a prominent double curve into two lobes.

Three relatively straight sides with distinct corners. More angular than teardrop-shaped.

 

 

 

Seed shape in 3-dimension (3D)

Globose

Lens-shaped

Cylindrical

Spindle-shapedSpindle-shapedSpindle-shaped

Is roughly spherical.

Round and flattened with two curved (convex) surfaces.

A cylinder, with parallel sides and a circular cross-section.

Round but elongated, tapering to a point at each end.

 

Polygonal

Plano-convex

Trigonous

Sectoroid

Having more than three flat faces meeting at angles.

Having a flat ventral (planar) surface and a curved dorsal (convex) surface.

Having three faces which meet at distinct angles.

Like a segment of an orange, with two relatively flat faces and one curved face.

 

 

Authored by:

Drawings by:

Reviewed by:

Jennifer Neudorf, Angela Salzl, Taran Meyer, and Ruojing Wang

Saskatoon Laboratory, Seed Science and Technology Section

Canadian Food Inspection Agency, Canada

Taran Meyer

Saskatoon Laboratory, Seed Science and Technology Section

Canadian Food Inspection Agency, Canada

Sue Cousins

AsureQuality Limited

Batchelar Agriculture Centre, New Zealand

2019 Canadian Food Inspection Agency, all right reserved.