Historical clue formulations

• Saclike structures produced by fungi — 2023-09-20
• Sacs studied by 58-Across — 2014-04-12
• Fungal spore cases — 2009-01-31
• Fungal spore sacs — 2006-04-16
• Spore cases — 2002-08-31
• Fungal spore sacs — 2002-06-27
• Spore sacs — 1994-03-24