Ophioderma intermedium

Ophioglossaceae

Ophioderma intermedium (Hook.) Nishida

Link to Australian Plant Name Index for publication details and synonyms: https://id.biodiversity.org.au/name/apni/51347656

Plants terrestrial. Rhizome very short, creeping, fleshy. Fronds 1–6, clustered, erect, fleshy. Common stipe and sterile lamina forming a continuous blade; blade oblanceolate, obtuse, flattened, undivided, 7–28 cm long, 6.5–22 mm wide; venation of long narrow areoles, without included veinlets. Sporophore 3.5–5 cm long, 2.5–4 mm wide, on a terete 2.5–8 cm long stipe, fused to 1 face of the sterile lamina in the distal part; sporangia reaching to apex.

Restricted to northern NT, including Melville Is. and Groote Eylandt; also Philippines and Indonesia (Java, Sumatra and Borneo).

Terrestrial, usually in rainforest but also recorded in other areas with permanent or semi-permanent water, including Melaleuca-dominated swamps.