Onosma helvetica subsp. tridentina (Wettst.) Teppner in Oesterr. Bot. Z. 119: 211. 1971
Onosma helvetica subsp. tridentina in Oesterr. Bot. Z. 119: 211. 1971
is new combination for Onosma tridentina in Kerner, Sched. Fl. Exs. Austro-Hung. 4: 64. 1886
Onosma helvetica subsp. tridentina in Oesterr. Bot. Z. 119: 211. 1971