"Bryopsida" . . "Orthothecium diminutivum" . . "Bryophyta" . "Plantae" . . "Diminutive Orthothecium Moss" . "Hypnales" . . . "Hypnaceae" . "(Grout) H.A. Crum, Steere and L.E. Anderson" . . . . . "Orthothecium" . "Orthothecium diminutivum (Grout) H.A. Crum, Steere and L.E. Anderson" . . . .