Tetranema megaphyllum (Brandegee) L.O. Williams Tetranema megaphyllum (Brandegee) L.O. Williams in Fieldiana, Bot. 34: 131. 1972 sec. Christenhusz 2014≡Allophyton megaphyllum Brandegee in Univ. Calif. Publ. Bot. 6(4): 62. 1914 syn. sec. Méndez-Larios & Villaseñor 1995