ombrophobous
/ˌɒmbrə(ʊ)ˈfəʊbəs/Botany
adjective
Of a plant: intolerant to prolonged rainfall.
Origin
Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From ombro- + -phobous, after German ombrophob. Compare ombrophilous.