Diplazium proliferum (Lam.) Thouars (1808: 35)

Pongkai, Puttamon, Zhang, Li-Bing, Boonkerd, Thaweesakdi & Pollawatn, Rossarin, 2023, Revision of the fern genus Diplazium (Polypodiales: Athyriaceae) in Thailand, Phytotaxa 631 (1), pp. 1-69 : 48-51

22. Diplazium proliferum (Lam.) Thouars (1808: 35) . Fig. 28 .

Asplenium proliferum Lamarck (1786: 307) .

Type: Réunion (“Bourbon”). P. Commerson s.n. (lectotype P-LAM P00564927 , photo Morton Neg. 2765 ( BM), desginated by Hovenkamp 2019: 64); isolectotype MPU018120 , MPU018121 photo seen !).

Plants terrestrial. Stems massive, erect, 5–7 cm diameter, apex scaly; scales, 12–15 × 1.0– 1.5 mm, linear, concolorus, brown, margin thick and toothed. Fronds 1.0– 1.30 m, imparipinnate; petioles 40–50 cm, deep green, minutely scaly, spinose on lower part. Laminae 65–70 × 35–42 cm, oblong in outline, apex acuminate, usually viviparous at apical portion between terminal pinna and rachis, glabrous, papyraceous, deep green; terminal pinna distinct, 12–15 × 8–10 cm, deltoid, apex acuminate, base subtruncate, margin lobed; lateral pinnae 10–15 pairs, alternate, about 12–15 × 5–6 cm, oblong, apex attenuate, base truncate, margin serrate or serrulate, sessile to shortly stalked, stalk 1–2 mm, longest at lower pinnae; vein strongly anastomosing. Sori as long as veinlet length, along veinlet, on some or all the veinlets, indusiate; indusial linear, thin, persistance. Spores monolete, 49.5–51.0 × 31.0–35.5 μm, bilateral, concavo-convex to plano-convex, perispore present; ornamentation: prominent wing folds.

Thailand: —PENINSULAR: Ranong (Phato), Trang, Yala (Banang Sata) .

Distribution: — Malaysia, Philippines, Indonesia, Australia and Papua New Guinea.

Ecology: —On moist ground by streams in evergreen forests at low altitude.

Specimens Examined:— THAILAND. Chumphon, Lang Suan, A.F. G. Kerr 12160 (BK, BM); Trang, C. Apasutaya 121a, ibis., 121b (BCU). INDONESIA. Java, D.R. Pleyte 2 (K); Jaya, G.M. Versteeg 1249 (K); Aru Islands, H.N. Moseley s.n. (K); Halmahera Toliwang, Idjan & Mochtar 327 (K); Sulawesi, J. Dransfield 3810 (K); Lombok Sewela, J. Elbert 1979 (K); Sumatra, J.J. friastini 740a (K); Sumatra, K. Iwatsuki, G. Murata, J. Dransfield & D. Saerudin S 1542 (K); no locality, L.L. Foman 126 (K); Mankowari, L.S. Gibbs 6159 (K); Kalimantan, M. Kato G. Murata & Y.P Mogea B4390 (K); Moluccas, M. Treub s.n. (K), Java, Millett s.n. (K); Sumatra, O. Beccari 428 (K); Sulawesi, P. Buwalda 3775 (K); Sumatra, P.W. Korthals s.n. (K); Batanta, Island, P. van Royen (K); Java, T. Lobb s.n. (K); Morotai Island, T.W. Main & Aden 802 (K); Java, V.F. Schiffner 189 (K); Seram Moluccas, W.H. de Vriese & J.E. Teysmann 216 (K); Batjan Island Moluccas, W.H. de Vriese & J.E. Teysmann 602 (K); Java, W.H. de Vriese 212 (K). MALAYSIA. Selangor, A.G. Piggott 1080 (K); Negri Sembilan Gunong Telapak Burok, A.G. Piggott 1961 (K); Pahang, A.G. Piggott 3002 (K); Perak, C. Curtis 1359 (K); Perak, E.J. Strugnell 14516 (K); Pahang Telom, H.N. Ridley 13970 (K); Pahang, K. Iwatsuki, N. Fukuoka & M. Hutoh 13657 (K). PHILIPPINES. Mindanao, C.M. Weber 1191 (K); Mindanao, E. Edano 8804 (BK); Luzon, E. Quisumbing M148 (K); ibis., E. Quisumbing M263 (K); Luzon, S. Vidaly Soler 1832 (K). PAPUA NEW GUINEA. Morobe, A. Millar & R.E. Holttum NGF15877 (K); New Ireland, A.C. Jermy 7742 (K), Webb s.n. (K); Port Moresby Musgrave river, B. S. Parris & J.P. Croxall 4463 (K); Madang B. S. Parris & J.P. Croxall 8401 (K); no locality, C.E. Carr s.n. (P); Kokoda, C.E. Carr 16302 (K); Madang, D.B. Foreman & R.I Dobunabu NGF45653 (K); Madang Ramu river, F.R.R. Schlechter 14147 (K); Kaiser Wilhelmsland Wobbe, F.R.R. Schlechter 16354 (K); New Ireland, G.W. Barclay s.n. (K); Morobe, H. Streimann & A. Kairo NGF44438 (K); East Sepik J. Wiakabu LAE73594 (K); Northern Prov., L.E. Cheesman 60 (K); Madang, M. Coode & P. Katik NGE32757 (K); Central District M. Pulsford 68 (K); Central Dist., R. Gebo & M. Pulsford 477 (K); Northern Division, R.D. Hoogland 3367 (K); Morobe, R.E. Holttum 80 (K); Morobe, T.G. Hartley 10021 (K); St Aignan Island, W. MacGregor 110 (K); Morobe, W. Takeuchi & A. Towati 15242 (K); Madang, W. Takeuchi et al. 13605 (K).

Figures

FIGURE 28. Diplazium proliferum (Lam.) Thouars. A, lamina. B, a part of pinna with sori. C, scale showing toothed and black marginal cells. Charn Apasutaya 121a (BCU).