LOL... check this meaning out...
” From a Western perspective, Bidens (meaning “two teeth”) is a reference to hairy calyx (pappus) of some species. The name “pilosa” means “hairy.” In China the many species and varieties of Bidens are often lumped under the names xian feng cao (“abundant weed”) or gui zhen cao (“demon spike grass” / “ghost needle weed”)cao but each species (see “similarly used species” above) will sometimes have a different Chinese common name. (“demon spike grass” or “ghost needle weed”) In Taiwan Bidens species are called “ham hong chho.”’
I’m going with “demon spike grass”, personally 🤣😂
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Re Demon spike grass:
Nice dig!