Accepted By:
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Hind, D. J. N. & C. Jeffrey. 2001. A checklist of the Compositae of Vol. IV of Humboldt, Bonpland & Kunth's Nova Genera et Species Plantarum. Compositae Newslett. 37: 1–84.
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Robinson, H. E. 1983. A generic review of the tribe Liabeae (Asteraceae). Smithsonian Contr. Bot. 54: 1–69.
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