Assertion: fern's frond | /r/CapableOf | emerge at narrow base of the clumps
Facets:
value: in spring
type: TEMPORAL
value: as the familiar "fiddleheads"
type: OTHER
Source sentences:
text: The vegetative fronds emerge at the narrow base of the clumps in spring as the familiar "fiddleheads" from where they unfurl to a maximum length of 4'.