Diplazium conterminum Christ. A 1905
Authors/Creators
- 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
3. Diplazium conterminum Christ (1905: 67). Fig. 6.
Type: VIETNAM. Annam, vallée du Long-Gianh, Cadière 88 (lectotype P02143203!, designated by Pacheco & Moran (2003: 91)).
Plants terrestrial. Stem long creeping, 0.5–1.0 cm diameter, densely scaly on younger part; scales 10–12 × 1.0– 1.2 mm, linear with long tail apex, dark brown to nearly black, margin thick and toothed. Fronds about 1 m, bipinnate; petioles up to 50 cm, 0.5–1.0 cm diameter, glabrous, brown, dark at lower portion. Laminae 47–53 × 38–42 cm, subdeltoid in outline, glabrous, papyraceous, dark green, terminal pinna not distinct; lateral pinnae 6–8 pairs, alternate, 27–30 × 10–15 cm, long stalk, up to 4 cm, gradually narrowing towards acute apex; pinnules 8–10 pairs, alternate, 6–8 × 2.0– 2.5 cm, sessile or shortly stalked, oblong, apex acuminate, base cordate or subtruncate, margin crenate to lobed; veins 4–5 pairs, pinnate. Sori 1–2 mm, oblong, usually in middle of each veinlet or submarginal, indusiate; indusia thin but firm; spores monolete, 47.5–57.5 × 32.5–37.0 μm, bilateral, concavo-convex to plano-convex, perispore present; ornamentation: labryrinth.
Thailand: —NORTHERN: Chiang Mai (Doi Chiang Dao), Phitsanulok (Phu Hin Rong kla, Phu Miang,); SOUTH-EASTERN: Chanthaburi (Khao Soi Dao); PENINSULAR: Nakhon Si Thammarat (Khao Luang).
Distribution: — China, Japan and Vietnam.
Ecology: —On mountain slopes in dense forests at elevations of 900–1,500 m.
Specimens Examined:— THAILAND. Chantaburi, Khao Soi Dao, K. Iwatsuki & N. Fukuoka T7204 (L); Phitsanulok, Phu Hin Rong kla P. Pongkai 15 (BCU); Phitsanulok, Phu Hin Rong kla, Mun Dang Waterfalls, P. Pongkai 109 (BCU); Phitsanulok, Phu Miang, T. Shimizu et al. T11603 (BKF, L). CHINA. Guizhou, anonymous 1791 (PE).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- P
- Material sample ID
- P02143203
- Scientific name authorship
- Christ. A
- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Order
- Polypodiales
- Family
- Athyriaceae
- Genus
- Diplazium
- Species
- conterminum
- Taxon rank
- species
- Type status
- lectotype
- Taxonomic concept label
- Diplazium conterminum A, 1905 sec. Pongkai, Zhang, Boonkerd & Pollawatn, 2023
References
- Christ, H. (1905) Filices Cadierianae. Journal de Botanique 19 (3): 58 - 79.
- Pacheco, L. & Moran, R. C. (2003) Lectotypification of several names currently placed in Diplazium (Woodsiaceae). American Fern Journal 93: 90 - 92.