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Heterogonium

Key ex Holttum 1975, Philip. J. Biol. 4:209

Species in Papuasia

1a. Veins free or with irregular slight anastomoses in sterile fronds 2
Veins anastomosing in sterile fronds, at least in one series of costal areoles H. subaequale
2a. Sori indusiate H. rufescens
Sori exindusiate 3
3a. Stipe glossy; pinna-lobes entire H. obscurum
Stipe not glossy; larger pinna-lobes crenate H. novoguineense