Not the Latin Plural for a Prickly Desert Plant

This page is the CodyCross answer for the clue below from Botanical Garden, Group 1431, Puzzle 2 (Lily of the Valley).

Question is: Not the Latin Plural for a Prickly Desert Plant

and the answer is: CACTUSES

Word Meaning:

CACTUSES — plural of cactus

Definitions from Wiktionary.