Hymenophyllum kerianum

Hymenophyllaceae

Hymenophyllum kerianum Watts

Link to Australian Plant Name Index for publication details and synonyms: https://id.biodiversity.org.au/name/apni/80161

Rhizome filiform, with long flexuose hairs, tufted at the stipe junction. Fronds suberect, 1.8–5 cm long. Stipes 0.4–2 cm long, well-spaced on the rhizome; wing tapering almost to the base, crisped; margins wavy and toothed. Lamina ovate-oblong to lanceolate, deeply 1–3-pinnatifid, 1–3.5 cm long, 0.7–2.5 cm wide, dark green. Ultimate segments 0.4–1.2 mm wide, arranged in flabellate groups; margins crisped, serrate; teeth and margins blackish; cell walls thick. Sori borne on short acroscopic segments on the upper pinnae, up to 6 per frond; involucre ovate, bilabiate, divided to two-thirds of its length, crested, 1.7–2.2 mm long, 0.7–1.2 mm wide; base narrowly cuneate; apex crisped and toothed; receptacle exserted. 

Endemic to Cape York Peninsula and the Wet Tropics of NE QLD.

Forms dense mats on rocks and creek banks in tropical rainforest.