Rondonanthus is a genus of plants in the Eriocaulaceae. It endemic to northern South America. 1. \n* Rondonanthus acopanensis (Moldenke) Hensold & Giul. - Bolívar State of Venezuela 2. \n* Rondonanthus capillaceus (Klotzsch ex Körn.) Hensold & Giul. - Bolívar and Amazonas States of Venezuela; Guyana, northern Brazil 3. \n* Rondonanthus caulescens (Moldenke) Hensold & Giul. - Aprada-tepui of Venezuela 4. \n* Rondonanthus duidae (Gleason) Hensold & Giul - Bolívar and Amazonas States of Venezuela; northern Brazil 5. \n* Rondonanthus flabelliformis (Moldenke) Hensold & Giul. - Toronó-tepui of Venezuela 6. \n* Rondonanthus roraimae (Oliv.) Herzog - Mt. Roraima along Venezuela/Guyana border