Assertion: alyssum's flower | /r/CapableOf | grow in cluster
Facets:
value: on the plant
type: LOCATION
value: atop a thin, green stem
type: OTHER
Source sentences:
text: Purple alyssum flowers grow in clusters atop a thin, green stem.
text: Ageratum houstonianum is called "flossflower" because of the tiny threads of each of the flowers that grow in clusters on the plant.