Key to the Bolivian Species of Saccoloma

1 Blades 1-pinnate ......................................................................................................................................................... S. chartaceum

- Blades 2- to 4-pinnate ....................................................................................................................................................................... 2

2 Rhizome scales linear-lanceolate to linear, 4–10 mm long, light to dark brown, spreading; sterile leaves 2–3-pinnate-pinnatifid, 30–80(140) cm long ...................................................................................................................................................... S. inaequale

- Rhizome scales rounded, 1–4 mm long, blackish, appressed; sterile leaves 3–4-pinnate-pinnatifid, 100–200(250) cm long ........... ........................................................................................................................................................................................ S. hieronymi