Christella papilio (C. Hope) Holtt. (Syn: Christella dentata var. glabra Punetha & Kholia; Cyclosorus papilio (Hope) Ching; Dryopteris papilio (C. Hope) H. Christ; Nephrodium molle var. major Bedd.; Nephrodium papilio C. Hope; Thelypteris papilio (C. Hope) Iwatsuki);

 

 

I have posted two Thelypteris species before; T. erubescens and T. dentata. This is the third, confirmed by Dr Fraser-Jenkins. The name derives from the butterfly like lower pinnae. I will add to this when I get the opportunity to get better photos of the sori 

 

 

References:

Catalogue of Life