Answer: thecal

AnswerCrossword Clue
THECALResembling a spore case.
thecala. sac, cell, or capsule b. sporangium
thecalresembling a theca (a protective anatomical covering)
thecalcase or receptacle
thecalcase or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa