Assertion: aster's leaf | /r/CapableOf | appear at the base of the capitulum
Facets:
Source sentences:
text: The involucres, which are the whorls of small, scale-like modified leaves that appear at the base of the capitulum, are in between cylindric and campanulate (i.e. bell-shaped) in shape and measure 4.2 to 6 mm (0.17 to 0.24 in) long, making them much shorter than the pappi.