Assertion: mushroom's gill | /r/CapableOf | become purplish
Facets:
value: at pallid
type: LOCATION
value: in age
type: TEMPORAL
Source sentences:
text: Gills: adnate to adnexed to sometimes seceding attachment, close, narrow to slightly wider towards the center, at first pallid to gray, becoming dark purplish to blackish in age, somewhat mottled, edges remaining whitish.