RWS Moon - lilly or arrowhead plants near pool?

Hi, I realise in another thread, someone mentioned there were 'teeth' around the pool, but, aherm, even being over 40 I can see its plants, with arrow shaped leaves - Waite said what these are specifically? Anyone got any good suggestions, which make sense symbology wise? Looked up Google, found Alum Lilly leaves looked similar OR Arrowhead plants - any ideas folks?

Ta Cara the crazy

None so far. I'm flipping through Waite's "Pictorial Key to the Tarot" and in the couple of pages dedicated to the Moon card, there is no mention or reference to the foliage by the water's edge.

Personally, I think it's just foliage by the water's edge.