Feuillage odorant

SELECT * FROM lau_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]Persistant[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

SELECT * FROM lau_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]feuillage odorant[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

Ruta graveolens  'Jackman's Blue'
Persistant feuillage odorant