Diplazium proliferum (Java)

Diplazium proliferum (Lam.) Thou., Esquisse Fl. Tristan D’Acugna 35 1808. (syn: Anisogonium attenuatum (Presl) Presl; Anisogonium decussatum (Sw.) Presl;Asplenium attenuatum Presl; Asplenium decussatum Sw.; Asplenium luzoniense Spreng.; Asplenium proliferum Lam.; Asplenium serrulatum Roxb.; Asplenium spinulosum (J. Sm.) Mett.; Asplenium swartzii (Bl.) Mett.; Athyrium accedens (Bl.) Milde; Athyrium lastii (C. Chr.) Tard.; Athyrium proliferum (Lam.) Milde; Athyrium swartzii (Bl.) Copel.; Callipteris accedens (Bl.) J. Sm.; Callipteris attenuata (Presl) C. Presl; Callipteris ferox J. Sm.; Callipteris prolifera (Lam.) Bory; Callipteris repanda (Bl.) C. Presl; Callipteris spinulosa J. Sm.; Callipteris swartzii (Bl.) C. Presl ; Digrammaria robusta Fée ; Diplazium accedens Bl.; Diplazium decussatum (Sw.) Christ ; Diplazium horridum Kunze ; Diplazium incisum Schum.; Diplazium lastii C. Chr.; Diplazium proliferoides Bory ; Diplazium proliferum (Lam.) Kaulf. (ambiguous synonym); Diplazium proliferum var. proliferoides (Bory) Tard.; Diplazium repandum Bl.; Diplazium serratum Schum.; Diplazium serrulatum (Roxb.) Moore; Diplazium spinosum Bory; Diplazium striatum Desv.; Diplazium swartzii Bl.);         

Australia (NE-Queensland), peninsular Malaysia (Penang), peninsular Thailand,
Java, Sumatra, Borneo, Sulawesi, Philippines, Moluccas (Seram, Ambon, etc.),
Lesser Sunda Isl. (Bali, Lombok, Flores, Timor), New Guinea, Bismarck Arch.,
Philippines, Solomon Isl. (Bougainville, Guadalcanal, Kolombangara, Makira,
Malaita, Ontong Java, Rendova, Vangunu, Vella Lavella), Taiwan, Fiji (Viti Levu,
Vanua Levu, Ovalau, Taveuni), Tonga (Tafahi), American Samoa (Manua Isl.,
Tutuila), Vanuatu, Western Samoa (Savaii, Upolu), Niue, Guinea, Sierra Leone,
Liberia, Ivory Coast, Ghana, Togo, Nigeria, Cameroon, Bioko Isl. (Fernando Poo),
Annobon Isl., Principe Isl., So Tom, Gabon, Congo (Brazzaville), Central African
Republic, D.R. Congo (Zaire), Sudan, Uganda, Tanzania, Angola, Madagascar, La
Runion, Mauritius, Rodrigues Isl., Comoros (Mayotte, Anjouan), Tristan d’Acunha,
Trinidad (I) as per Catalogue of Life;

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But sori are not visible!!  So how can we identify it? Please look carefully, are the young sori (if any) elongated? Are there small proliferous bulbils at the axil of each pinna base with the rachis?  If so, it is an immature specimen of Diplazium proliferum (syn. D. accedens). 

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Thank you … I think this is Diplazium proliferum.      

1 image- 3 Mb.

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References:

Catalogue of Life  The Plant List Ver.1.1  Tropicos  IPNI
 Useful Tropical Plants  prota4u