WoRMS source details
Rhodora 3
327966
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Prenanthes trifoliolata var. nana (Bigelow) Fernald accepted as Nabalus trifoliolatus Cass. (original description)
Senecio balsamitae var. pauperculus (Michx.) Fernald (original description)
Senecio balsamitae var. praelongus Greenm. (original description)
Senecio balsamitae var. pauperculus (Michx.) Fernald (original description)
Senecio balsamitae var. praelongus Greenm. (original description)