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Radial spines of
Coryphantha echinoidea |
In
biology the term radial
describe the arrangement of parts of an
organism (such as the
petals of a
flower, the rays of a starfish or
the spines of a
cactus) in which the parts develop
in a circular symmetrical arrangement around a central point: Radial
projections; Also applied to a
rootstock in which the fronds
radiate and the roots are borne on all
sides of the organ.
( See: Radial symmetry
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Stellate
flowers of
Stapelia flavopurpurea |
