Compilation
Athyrium rondoense

Rhizome creeping with blackish or black-veined clathrate scales ± 1.5 mm long; fronds single, 15–40 cm tall; stipe slender, 10–20 cm long with few scales and dense very short hairs. Lamina up to 20 cm long, 15 cm wide, tripartite, the parts ± confocal, each simply pinnate but pinnae very deeply divided so as to appear bipinnate; main parts broadly lanceolate in outline up to 18 cm long, 6 cm wide, acuminate but not long-caudate at the apex; each part with 6–9 pairs of pinnae up to ± 5 cm long, 2 cm wide, the apical ones reduced, toothed only at the apex, running together and narrowly decurrent into each other resembling a series of fish-tails; lower pinnae deeply divided into ± 6 elliptic lobes, the largest ± 15 mm long, 8 mm wide, ± entire to bluntly or subacutely lobed or toothed; main lobes of largest pinnae decurrent, separated by narrowly winged midrib 1–2 mm wide. Sori 1–4 per pinna-lobe, ± 1 mm wide; indusium fimbriate and hairy.