Nemacladus australis (Munz) Morin Nemacladus australis (Munz) Morin in J. Bot. Res. Inst. Texas 2: 398. 2008 sec. Rzedowski 2019=Nemacladus rigidus Munz in Amer. J. Bot. 11: 242. 1924 syn. sec. Govaerts 2013