Looking at the Flora of North American key for Zephyranthes. The first key says either Stigma capitate or Stigma 3-fid. Fairly sure I understand capitate but what is 3-fig?
3-fid (not 3-fig!) is shorthand for trifid, i.e., divided into three points. Quite why they don't spell out trifid (only one more character than 3-fid), I don't know. Maybe because they think people will get confused with fictional predatory plants??