1. Shape of ripe seed, whether round; or angular and wrinkled.

2. Colour of “endosperm” (cotyledons), whether some shade of yellow; or

a more or less intense green.

3. Colour of the seed-skin, whether various shades of grey and

grey-brown; or white.

4. Shape of seed-pod, whether simply inflated; or deeply constricted

between the seeds.