Revision of the fern genus Diplazium (Polypodiales: Athyriaceae) in Thailand Author Pongkai, Puttamon 0000-0003-0273-1889 Office of National Science Research, National Science Museum, Technopolis, Khlong 5, 39 Moo 3, Khlong Luang, Pathum Thani, 12120, Thailand. & Puttamon. p @ nsm. or. th; https: // orcid. org / 0000 - 0003 - 0273 - 1889 uttamon.p@nsm.or.th Author Zhang, Li-Bing 0000-0002-4905-040X Missouri Botanical Garden, P. O. Box 299, St. Louis, Missouri 63166 - 0299, USA and Chengdu Institute of Biology, Chinese Academy of Sciences, P. O. Box 416, Chengdu, Sichuan 610041, China & Libing. Zhang @ mobot. org; https: // orcid. org / 0000 - 0002 - 4905 - 040 X hang@mobot.org Author Boonkerd, Thaweesakdi 0009-0001-5864-7208 Office of National Science Research, National Science Museum, Technopolis, Khlong 5, 39 Moo 3, Khlong Luang, Pathum Thani, 12120, Thailand. & Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. & bthawees @ googlemail. com; https: // orcid. org / 0009 - 0001 - 5864 - 7208 bthawees@googlemail.com Author Pollawatn, Rossarin 0000-0001-6798-7274 Office of National Science Research, National Science Museum, Technopolis, Khlong 5, 39 Moo 3, Khlong Luang, Pathum Thani, 12120, Thailand. & Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. & Office of National Science Research, National Science Museum, Technopolis, Khlong 5, 39 Moo 3, Khlong Luang, Pathum Thani, 12120, Thailand. & Rossarin. p @ chula. ac. th; https: // orcid. org / 0000 - 0001 - 6798 - 7274 * Corresponding authors: Puttamon. p @ nsm. or. th; Libing. Zhang @ mobot. org & Office of National Science Research, National Science Museum, Technopolis, Khlong 5, 39 Moo 3, Khlong Luang, Pathum Thani, 12120, Thailand. ossarin.p@chula.ac.th text Phytotaxa 2023 2023-12-22 631 1 1 69 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.631.1.1/51384 journal article 10.11646/phytotaxa.631.1.1 1179-3163 10422862 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. FIGURE 27. Diplazium procumbens Holttum. A , pinna. B, pinnule with sori. C, scale showing toothed and not black marginal cells. D.J. Middleton et al. 1762 (BKF). 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). 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).