Drymaria effusa var. confusa (Rose) J.A. Duke Drymaria effusa var. confusa (Rose) J.A. Duke in Ann. Missouri Bot. Gard. 48(3): 205–206, f. 6C. 1961 sec. POWO 2019≡Drymaria confusa Rose in Contr. U.S. Natl. Herb. 5(8): 133. 1897 syn. sec. POWO 2019