Scientific name: Scleroglossum sulcatum (Kuhn) Alderw.
English name:
Vietnamese name:
Other name:

Basionym: Vittaria sulcata Kuhn (1869: 68).

Type: Srilanka. Thwaites 3807 (lectotype B!; isolectotypes B!, BM!, Cge!, gh!, K!, Le, P!, PDa!, W).

Additional specimens examined:

Vietnam. annam, Nha Trang, elev. 1600 m, 20 May 1922, Poilane 3527 (P, image seen). Vinh Phuc Province: Tam Dao Town, rung rinh Peak and nearby Thach Ban Peak, 7 November 2009, Wade 1043 (aK!, VNMN!), Lu 19351 (TaIF!). Lam Dong Province: Lac Duong District, Da Chays Commune, Bidoup-Nui Ba National Park, giang Ly Forest Station, 20 June 2011, Wade 1623 (aK!), 17 June 2013, Wade 2587 (TaIF!), 18 June 2013, Wade 2639 (TaIF!).

Distribution:

China, Sri Lanka, Thailand, Vietnam, Peninsular Malaysia, Sumatra, Java, Lesser Sunda Is., Borneo (Brunei, Kalimantan, Sabah, Sarawak), Sulawesi, Philippines, Moluccas, New guinea (West Papua, Papua New guinea), Caroline Islands, Solomon Islands, Samoa, Society Islands and Marquesas Islands.

Taxonomic note:

Previously confused with Scleroglossum pusillum, which differs in sori closer to the margin, which is thicker.

 (Phytotaxa 226 (1): 039–050)