Pennellia patens (O.E. Schulz) Rollins in Rhodora 62(733): 15-16. 1960 sec. Rollins 1993
- ≡Heterothrix patens O.E. Schulz, Pflanzenr. (Engler) IV. 105(Heft 86): 296-297. 1924 syn. sec. Bailey & al. 2007
- =Heterothrix juncea O.E. Schulz, Pflanzenr. (Engler) IV. 105(Heft 86): 297. 1924 syn. sec. Bailey & al. 2007
- =Pennellia juncea (O.E. Schulz) Rollins in Contr. Gray Herb. 210: 19. 1980 syn. sec. Bailey & al. 2007