I was given a beautiful orchid as a gift, and was prompted to look up the word. The root of the word orchid is the ancient Greek ὄρχις, (orchis or orkhis), meaning 'testicle' because of the resemblance of this flower's tubers to testicles. The orchid was a symbol of virility in ancient Greece.
Indeed, at the 'bollock' entry in the OED, we find the definition: "any of various plants, esp. several kinds of orchid having tubers which resemble testicles". In particular, there are the old orchid varieties bollockgrass and bollockwort, both in the OED.
The UK charity which promotes research and awareness of testicular and other male cancers is called Orchid.