Acroporium esmeraldicum (Müll. Hal.) W.R. Buck, Ruizia 17: 182. 2000. Hypnum esmeraldicum Müll. Hal., Syn. Musc. Frond. 2: 392. 1851. Sematophyllum esmeraldicum (Müll. Hal.) Broth., Nat. Pflanzenfam. (ed. 2) 11: 432. 1925. Type: Ecuador. Ad truncos arborum in sylvis prope Esmeraldos Andium Quitensium, 1827, Jameson [in Hb. Grevill.]
Hypnum microcladium Taylor, London J. Bot. 5: 64. 1846, nom. illeg. Sematophyllum microcladium Mitt., J. Linn. Soc., Bot. 12: 495. 1869, nom. illeg. Type: Ecuador. On trunks of trees, Forest of Esmeraldos, 1827, Jameson.