<P> Other less obvious terms include discoid ( resembling a disc or plate , having both thickness and parallel faces and with a rounded margin ) , ellipsoid , globose ( spherical ) , or subglobose ( Inflated , but less than spherical ) , lenticular , oblong , ovoid , reniform and sectoroid . Striate seeds are striped with parallel , longitudinal lines or ridges . The commonest colours are brown and black , other colours are infrequent . The surface varies from highly polished to considerably roughened . The surface may have a variety of appendages ( see Seed coat ) . A seed coat with the consistency of cork is referred to as suberose . Other terms include crustaceous ( hard , thin or brittle ) . </P>
<P> Other less obvious terms include discoid ( resembling a disc or plate , having both thickness and parallel faces and with a rounded margin ) , ellipsoid , globose ( spherical ) , or subglobose ( Inflated , but less than spherical ) , lenticular , oblong , ovoid , reniform and sectoroid . Striate seeds are striped with parallel , longitudinal lines or ridges . The commonest colours are brown and black , other colours are infrequent . The surface varies from highly polished to considerably roughened . The surface may have a variety of appendages ( see Seed coat ) . A seed coat with the consistency of cork is referred to as suberose . Other terms include crustaceous ( hard , thin or brittle ) . </P>
the hard outer covering of a seed is called
the hard outer covering of a seed is called
seed coat
seed coat