Houstonia geniculata Houstonia linnaei var. minor Houstonia minima Houstonia minor Houstonia patens Oldenlandia patens Hedyotis caerulea var. minima Hedyotis caerulea var. minor Houstonia caerulea var. minor Houstonia pusilla f. rosea Oldenlandia caerulea var. patens Ereicoctis crassifolia Hedyotis crassifolia Hedyotis crassifolia f. albiflora Hedyotis geniculata Hedyotis minima Hedyotis caerulea var. patens Houstonia pusilla f. albiflora
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024