Assertion: native rose | /r/HasAspect | flat button of pistils
Facets:
value: at the center of each flower
type: LOCATION
value: of a narrow column of pistils
type: LOCATION
Source sentences:
text: They also have more leaflets per compound leaf than the latter species, and they have a flat button of pistils at the center of each flower, instead of a narrow column of pistils.