What does the cryptic crossword clue "Misplaced comma? Remove it describing a plaque, say (13)" mean?

The wordplay uses an anagram. anagram of COMMA? + REMOVE + IT = COMMEMORATIVE The answer is COMMEMORATIVE.

Misplaced comma? Remove it describing a plaque, say (13)

Daily Mail Cryptic #17428 | 15 Across | 2024-08-21 flower