ˌsfirōˈstil(ˌ)bē, -fer- noun
Usage: capitalized
Etymology: New Latin, from sphaer- + -stilbe (from Greek stilbos glistening) — more at stilbum
: a genus of ascomycetous fungi (family Nectriaceae) characterized by red perithecia borne on slender stromatic stalks and 2-celled ascospores and including destructive root parasites especially of tropical plants