"Bryopsida" . "Sematophyllaceae" . . . "Plantae" . . . . "Small's Acroporium Moss" . . . . "Hypnales" . "(R.S. Williams) H.A. Crum and L.E. Anderson" . "Acroporium" . "Bryophyta" . "Acroporium smallii" . "Acroporium smallii (R.S. Williams) H.A. Crum and L.E. Anderson" . . . . .