Yes, CELANDINES is a Scrabble word!

Letter values in Scrabble US: C 3, E 1, L 1, A 1, N 1, D 2, I 1, N 1, E 1, S 1.

Is it a valid word?

CELANDINES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil
perennial herb with branched woody stock and bright yellow flowers

Also: lady's earrings, orange balsam, touch-me-not, impatiens capensis, greater celandine, swallow wort, chelidonium majus.

Not playable in Scrabble US: SWALLOWWORT.