Porella caespitans var. cordifolia Porella caespitans var. grossedentata Porella caespitans subsp. latior Porella caespitans var. nipponica Porella caespitans var. intermedia Porella caespitans subsp. caespitans Porella caespitans var. caespitans
Madotheca caespitans Madotheca pearsoniana Madotheca circinans Porella setigera f. circinans Porella caespitans f. caespitans Porella setigera var. pearsoniana
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024