The genera name from Greek thladias; 'eunuch' and anthos; 'flower', referring to the suppressed stamens suggesting they had been neutered. The species name from Latin; dubia; means ‘doubtful’ - as it might be a eunuch? Well, the American seems to be, as only males are fund here. The female flower by Rob Hille, Minnesotawildflowers.info. The caudexes from Wikimedia.org.
