Assertion: lichen's thallus | /r/CapableOf | range in color
Facets:
value: from glaucous white
type: OTHER
value: to gray on the upper cortex
type: LOCATION
Source sentences:
text: Parmelia sulcata is a foliose lichen with a generally circular thallus that can range in color from glaucous white to gray on the upper cortex; the lower surface is black.