Youngia denticulata (Houtt.) Kitam. = Paraixeris denticulata (Houtt.) Nakai
English:
denticulatus,-a,-um;

https://archive.org/stream/#page/128/mode/2up
homotypic synonyms:
Chondrilla denticulata (Houtt.) Poiret; Crepidiastrum denticulatum (Houtt.); Ixeris denticulata (Houtt.) Nakai; Ixeris denticulata (Houtt.) Nakai ex Stebbins; Lactuca denticulata (Houtt.) Maxim.; Paraixeris denticulata (Houtt.) Nakai; Prenanthes denticulata Houtt.; Youngia denticulata (Houtt.) DC.;

protologue: : 128 (1942)

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