Published December 22, 2023 | Version v1
Taxonomic treatment Open

Diplazium xiphophyllum C. Christensen 1906

  • 1. 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
  • 2. 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
  • 3. 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
  • 4. 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.

Description

31. Diplazium xiphophyllum (Baker) C. Christensen (1906: 241). Fig. 38.

Athyrium xiphophyllum Baker (1879: 40).

Type: MALAYSIA. Veitch, s.n. (holotype K000491792!; isotype K000491791!).

Plants terrestrial. Stems erect, 4–5 cm diameter, clothed with scales at apex; scales 10–15 × 1.5–2.0 mm, linear with long tail apex, concolorous, brown, margin entire. Fronds up to 1.4 m, pinnate; petioles up to 80 cm, 5–6 mm diameter, glabrous, light green, dark brown and scaly near base. Laminae 50–60 × 40–50 cm, oblong in outline, glabrous, subcoriaceous, light green; terminal pinna distinct like lateral one, 15–20 × 3–4 cm, oblong, apex attenuate, base cuneate, margin subentire or lobed; lateral pinnae 4–7 pairs, alternate, 25–30 × 4–5 cm, oblong, apex attenuate, base cuneate, margin subentire, stalked; stalks 2–3 mm; veins pinnate, veinlets 2 pairs, free, occasionally anastomosing but never copiously; gemmae sometimes present on rachis. Sori 2.0– 2.5 cm, elongate along veinlets, usually longest on basal veinlets of vein group, diplazoid; indusia thin, persistance. Spores monolete, 32.5–40.0 × 25.5–27.0 μm, bilateral, concavo-convex to plano-convex, perispore present; ornamentation: prominent wing folds.

Thailand: —PENINSULAR: Nakhon Si Thammarat (Groong Ching waterfalls, Khao Luang, Khao Nan), Narathiwat (Ban Waeng), Yala (Ban Chana).

Distribution: — Malaysia, Philippines, Brunei and Indonesia.

Ecology: —On moist mountain slopes in shady dense evergreen forests at medium elevations.

Specimens Examined:— THAILAND. Nakhon Si Thammarat, Khao Luang, M. Tagawa, K. Iwatsuki & N. Fukuoka T5304 (L); Nakhon Si Thammarat, Khao Luang, P. Pongkai 113 (BCU); Nakhon Si Thammarat, Krungm Ching waterfalls, P. Pongkai 143 (BCU); Nakhon Si Thammarat, Khao Nan, T. Boonkerd, S. Chantanaorapint & W. Khwaiphan 62 (BCU); Nakhon Si Thammarat, Khao Nan, T. Boonkerd, Y. Sirichamorn & C. Sanguansab 241 (BCU). BRUNEI. Temburong, A.D. Poulsen 114 (K). INDONESIA. Sumatra, E. Gardette 359 (K); Borneo, F.W. Burbidge s.n. (K); ibis., Veitch s.n. (K). MALAYSIA. Pahang, A,G. Piggott 2915 (K); ibis., A,G. Piggott 2956 (K); ibis., A,G. Piggott 2963 (K); ibis., A,G. Piggott 3000 (K); Selangor, A,G. Piggott 3139 (K); Pahang, A.G. Piggott 2963 (K); Selangor, A.G. Piggott 3139 (K); Perak, B. Molesworth-Allen 2732 (K); ibis., B. Molesworth-Allen 2858 (K); Pahang, B.S. Parris & P.J. Edwards 10403 (K); Sabah, B.S. Parris 10720 (K); Perak, C. Curtis 1361 (K); Sabah, C.B. Kloss SFN19028 (K); Perak, C.G. Matthew s.n. (K); Perak, G.F. Hose 285 (K); Selangor, H.N. Ridley 7833 (K); Sabah, J. Clemens & M.S. Clemens 29406 (K); ibis., J. Clemens & M.S. Clemens 29438 (K); Sabah, J. Low s.n. (K); Kalimantan, K. Iwatsuki, M. Kato, G. Murata & Y.P. Mogea B1910 (K); Kinabalu, M.S. Clemens 29438 (BM); Sabah, R.E. Holttum SFN25258 (K); Selangor, R.E. Holttum SFN37357 (K); Perak, W. Robinson 39 (K); Sabah, W.L. Chew, E.J.H. Corner & A. Stainton 1438 (K). PHILIPPINES. Mindanao, A.D.E. Elmer 11319 (K); ibis., A.D.E. Elmer 11745 (K); Paragua, E.D. Merrill 746 (K); Leyte, H. Cuming 305 (K).

Notes

Published as part of Pongkai, Puttamon, Zhang, Li-Bing, Boonkerd, Thaweesakdi & Pollawatn, Rossarin, 2023, Revision of the fern genus Diplazium (Polypodiales: Athyriaceae) in Thailand, pp. 1-69 in Phytotaxa 631 (1) on page 66, DOI: 10.11646/phytotaxa.631.1.1, http://zenodo.org/record/10422862

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Linked records

Additional details

Biodiversity

Collection code
K
Family
Athyriaceae
Genus
Diplazium
Kingdom
Plantae
Material sample ID
K000491792, K000491791
Order
Polypodiales
Phylum
Tracheophyta
Scientific name authorship
C. Christensen
Species
xiphophyllum
Taxon rank
species
Type status
holotype
Taxonomic concept label
Diplazium xiphophyllum Christensen, 1906 sec. Pongkai, Zhang, Boonkerd & Pollawatn, 2023

References

  • Christensen, C. (1906) index Filicum. Apud Hagerup, Triers Bogtrykkeri, Hafniae, 744 pp.
  • Baker, J. G. (1879) Report on a collection of ferns made in the north of Borneo by Mr. F. W. Burbidge. Journal of Botany, British and Foreign 17: 37 - 44. https: // doi. org / 10.1111 / j. 1095 - 8339.1886. tb 00465. x