Assertion: auricula's form | /r/CapableOf | appear as random mutations
Facets:
value: in several orchid species in nature
type: LOCATION
value: quite commonly
type: DEGREE
Source sentences:
text: Peloric forms quite commonly appear as random mutations in several orchid species in nature and this is genetically controlled, although the expression can be influenced by both environmental changes and by stresses, additionally the occurrence is unstable and the same plant may exhibit normally on the next flowering.