Historical clue formulations

• Holly genus — 2024-08-23
• Holly tree — 2015-06-17
• Holly — 2014-08-01
• Holly genus — 2011-07-03
• Genus of holly — 2011-05-08
• Holly — 2009-04-29
• Holly plant — 2005-09-04
• Holly tree — 2000-01-22
• Holly — 1998-04-15
• Holly — 1997-11-29
• Holm oak — 1997-09-24
• Holly genus — 1997-03-13
• Oak variety — 1997-03-05
• Holly — 1996-01-24
• Holly — 1995-07-22
• Holly shrub — 1994-11-16
• The holm oak — 1994-03-21