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.	The widest point is towards one end of the seed or fruit. The other end tapers gradually to a curved end.	The 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 is 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 the rest position, has one straight margin and one curved margin, resembling the shape of the letter D.	In the 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.

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 that meet at distinct angles.	Like a segment of an orange, with two relatively flat faces and one curved face.