46 c. Drymaria rotundifolia var. mattfeldiana J. T. Howell, Leaf. W. Bot. 10: 351. 1966.

Type.

Ecuador. Galapagos Islands: Isabela Island, 4000 ft [alt. 1219.2 m], 26 May 1932, J. T. Howell 9568 (holotype: CAS [213490/0002332 image!]; isotypes: B [B 10 1226983!], US [2814511 / 00103361 image!]) .

Distribution.

Ecuador.

Notes.

In the protologue, an isotype was reported from the PRC. However, according to the curator (Patrik Mráz) (pers. comm., 2024), there is no specimen located there.