Kohautia aspera Oldenlandia aspera Oldenlandia pusilla Oldenlandia strumosa Hedyotis aspera Hedyotis attenuata Hedyotis brachiata Hedyotis elongata Hedyotis strumosa Oldenlandia brachiata Oldenlandia leclercii Oldenlandia attenuata Kohautia strumosa
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024