Assertion: cultivar | /r/PartOf | the lanuginosa group
Facets:
value: to the jackmanii group
type: OTHER
value: due to hybridization
type: CAUSE
Source sentences:
text: It is often impossible to say whether a cultivar belongs to the Lanuginosa Group or to the Jackmanii Group, due to hybridization and/or lack of information on the parentage, so it is not possible to maintain these Groups.