Biodiversity Literature Repository

Submit to community
Liberated Data
Published March 18, 2026 | Version v1
Journal article Open

First species records of charophytes (Charophyceae, Characeae) from Laos with a description of new species Nitella laotica R.E.Romanov, V.Yu.Nikulin, K.-G.Bernhardt & A.A.Gontcharov, sp. nov. and lectotypification of Chara pseudohydropithys Imahori

Authors/Creators

  • 1. Dobra Voda, 85356, Bar (Montenegro) streptophytes@gmail.com (corresponding author)
  • 2. Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 100-letiya Vladivostoka Avenue, 159, 690022 Vladivostok (Russia) nikulinvyacheslav@gmail.com
  • 3. University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research, Institute of Botany, Vienna, 1180 (Austria) karl-georg.bernhardt@boku.ac.at
  • 4. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences (RAS), 35 Botanicheskaya Street, 127276 Moscow (Russia) glushchenko@ifr.moscow
  • 5. Institute of Natural Sciences, Tsiolkovskiy Kaluga State University, Kaluga 248023 (Russia) nepentes@list.ru
  • 6. Vsounnarath road, Ban Visoun: P.B.Box 1088, Luang Prabang Province, 06000, (The Lao People's Democratic Republic) youtheco@laotel.com
  • 7. Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 100-letiya Vladivostoka Avenue, 159, 690022 Vladivostok (Russia) gontcharov@biosoil.ru

Description

Romanov, Roman E., Nikulin, Vyacheslav Yu., Bernhardt, Karl-Georg, Glushchenko, Anton M., Konstantinov, Evgeny L., Phinsavath, Sungsamouth, Gontcharov, Andrey A. (2026): First species records of charophytes (Charophyceae, Characeae) from Laos with a description of new species Nitella laotica R.E.Romanov, V.Yu.Nikulin, K.-G.Bernhardt & A.A.Gontcharov, sp. nov. and lectotypification of Chara pseudohydropithys Imahori. Cryptogamie, Algologie 47 (1): 1-22, DOI: 10.5252/cryptogamie-algologie2026v47a1, URL: http://dx.doi.org/10.1016/j.compbiomed.2025.111426

Files

source.pdf

Files (11.0 MB)

Name Size Download all
md5:0fdf285914477c2d082751cb26f21a4c
11.0 MB Preview Download

Linked records

Additional details

Identifiers

LSID
urn:lsid:plazi.org:pub:FFDF285914477C2D0827FFCBFFF21A4C
URL
http://publication.plazi.org/id/FFDF285914477C2D0827FFCBFFF21A4C

Cites
Publication: 10.1109/TAC.1974.1100705 (DOI)
Publication: 10.3390/plants10102069 (DOI)
Publication: 10.1093/nar/23.24.4992 (DOI)
Publication: 10.11646/phytotaxa.302.2.1 (DOI)
Publication: 10.2216/i0031-8884-30-3-237.1 (DOI)
Publication: 10.1071/SB06038 (DOI)
Publication: 10.1071/SB08039 (DOI)
Publication: 10.1007/978-3-031-31898-6_22 (DOI)
Publication: 10.1071/SB13016 (DOI)
Publication: 10.1007/s00606-017-1456-1 (DOI)
Publication: 10.6165/tai.2014.59.76 (DOI)
Publication: 10.1038/nmeth.2109 (DOI)
Publication: 10.51033/jjapbot.ID0318 (DOI)
Publication: 10.1139/g92-014 (DOI)
Publication: 10.1093/bioinformatics/12.6.543 (DOI)
Publication: 10.1111/j.1095-8339.1928.tb02578.x (DOI)
Publication: 10.1111/jpy.13431 (DOI)
Publication: 10.1093/bioinformatics/17.8.754 (DOI)
Publication: 10.2216/07-27.1 (DOI)
Publication: 10.1508/cytologia.75.211 (DOI)
Publication: 10.1016/j.japb.2020.09.005 (DOI)
Publication: 10.1002/ecog.07995 (DOI)
Publication: 10.1080/01811789.1991.10827040 (DOI)
Publication: 10.1016/j.jplph.2014.10.017 (DOI)
Publication: 10.1093/bioinformatics/btz305 (DOI)
Publication: 10.11646/phytotaxa.414.4.3 (DOI)
Publication: 10.1016/j.aquabot.2016.06.010 (DOI)
Publication: 10.1071/BT97087 (DOI)
Publication: 10.1071/BT97089 (DOI)
Publication: 10.1080/23818107.2020.1847189 (DOI)
Publication: 10.1080/09670269810001736853 (DOI)
Publication: 10.1111/j.1095-8339.1932.tb00382.x (DOI)
Publication: 10.1111/j.1529-8817.1980.tb03023.x (DOI)
Publication: 10.2307/2845189 (DOI)
Publication: 10.5507/fot.2021.012 (DOI)
Publication: 10.1134/S1234567814100097 (DOI)
Publication: 10.5507/fot.2015.004 (DOI)
Publication: 10.1080/09670262.2021.1987527 (DOI)
Publication: 10.3390/d15020249 (DOI)
Publication: 10.11646/phytotaxa.715.3.1 (DOI)
Publication: 10.11646/phytotaxa.740.1.4 (DOI)
Publication: 10.11646/phytotaxa.659.1.2 (DOI)
Publication: 10.11646/phytotaxa.438.2.2 (DOI)
Publication: 10.5252/cryptogamie-algologie2022v43a13 (DOI)
Publication: 10.1007/978-3-031-31898-6_50 (DOI)
Publication: 10.1111/j.1440-1835.2008.00502.x (DOI)
Publication: 10.2216/05-31.1 (DOI)
Publication: 10.2216/i0031-8884-43-6-672.1 (DOI)
Publication: 10.2216/i0031-8884-43-1-91.1 (DOI)
Publication: 10.1111/pre.12085 (DOI)
Publication: 10.1111/j.1529-8817.2009.00700.x (DOI)
Publication: 10.1111/j.1529-8817.2005.04133.x (DOI)
Publication: 10.2216/i0031-8884-41-4-397.1 (DOI)
Publication: 10.1080/00318884.2024.2400036 (DOI)
Publication: 10.1007/978-3-031-31898-6 (DOI)
Publication: 10.3390/d14100864 (DOI)
Publication: 10.1080/10635150802429642 (DOI)
Has part
Taxonomic treatment: 10.5281/zenodo.19388332 (DOI)
Taxonomic treatment: http://treatment.plazi.org/id/03E6502114427C280908F9D9FC051D75 (URL)
Taxonomic treatment: 10.5281/zenodo.19388336 (DOI)
Taxonomic treatment: http://treatment.plazi.org/id/03E6502114427C240B91F8B5FA551B9D (URL)
Taxonomic treatment: 10.5281/zenodo.19388338 (DOI)
Taxonomic treatment: http://treatment.plazi.org/id/03E65021144E7C240BCCFDDCFC2C18FD (URL)
Taxonomic treatment: 10.5281/zenodo.19388340 (DOI)
Taxonomic treatment: http://treatment.plazi.org/id/03E65021144E7C3E0B50FD3DFDAB1CC0 (URL)
Figure: 10.5281/zenodo.19189357 (DOI)
Figure: 10.5281/zenodo.19189363 (DOI)
Figure: 10.5281/zenodo.19135604 (DOI)
Figure: 10.5281/zenodo.19135608 (DOI)
Figure: 10.5281/zenodo.19135611 (DOI)
Figure: 10.5281/zenodo.19135613 (DOI)
Figure: 10.5281/zenodo.19135615 (DOI)
Figure: 10.5281/zenodo.19135617 (DOI)
Figure: 10.5281/zenodo.19189367 (DOI)
Figure: 10.5281/zenodo.19189373 (DOI)
Figure: 10.5281/zenodo.19135619 (DOI)
Is source of
Dataset: https://www.gbif.org/dataset/81407c34-7cbb-46dc-b8c5-74d4132e3862 (URL)

References

  • AKAIKE H. 1974. - A new look at the statistical model identification. IEEE Transactions on Automatic Control 19: 716-723. https://doi.org/10.1109/TAC.1974.1100705
  • BALAKRISHNAN S. & RANI G. 2017. - Morphological and molecular analysisoftwopopulationsof Charazeylanica Willd.Phykos 47 (1): 1-7.
  • BECKER R., SCHUBERT H. & NOWAK P. 2021. - Chara zeylanica J.G.Klein ex Willd. (Charophyceae, Charales, Characeae): first European record from the island of Sardinia, Italy. Plants 10, 2069. https://doi.org/10.3390/plants10102069
  • BONFIELD J. K., SMITH K. F. & STADEN R. 1995. - A new DNA sequence assembly program. Nucleic Acids Research 23: 4992- 4999. https://doi.org/10.1093/nar/23.24.4992
  • BORGES F. R. & NECCHI O. 2017. - Taxonomy and phylogeny of Chara (Charophyceae, Characeae) from Brazil with emphasis on the midwest and southeast regions. Phytotaxa 302 (2): 101-121. https://doi.org/10.11646/phytotaxa.302.2.1
  • BRAUN A. & NORDSTEDT C. F. O. 1882. - Fragmente einer Monographie der Characeen von Hrn. A. Braun. Nach den hinterlassenen Manuscripten A. Braun's herausgegeben von Hrn. Dr. Otto Nordstedt. Abhandlungen der Koniglichen Akademie der Wissenschaften zu Berlin 1882 (1): 1-211, taf. 1-7. https://www. biodiversitylibrary.org/page/30898986
  • BUENO N. C. & BICUDO C. E. DE M. 2021. - Charophyceae do Brasil. Publisher, Sao Carlos, 190 p.
  • CASANOVA M. T. 1991. - An SEM study of developmental variation in oospore wall ornamentation of three Nitella species (Charophyta) in Australia. Phycologia 30: 237-242. https://doi. org/10.2216/i0031-8884-30-3-237.1
  • CASANOVA M. T. 2007. - Typification and circumscription of Nitella sonderi (Characeae, Charophyceae). Australian Systematic Botany 20 (5): 464-472. https://doi.org/10.1071/SB06038
  • CASANOVA M. T. 2009. - An overview of Nitella in Australia (Characeae, Charophyta).Australian Systematic Botany 22: 192- 218. https://doi.org/10.1071/SB08039
  • CASANOVA M. T. & DOEGE A. 2024.-Chara braunii, in SCHUBERT H., BLINDOW I., NAT E., KORSCH H., GREGOR T., DENYS L., STEWART N., VAN DE WEYER K., ROMANOV R. & CASANOVA M. T. (eds), Charophytes of Europe. Springer, Berlin, Heidelberg: 339-349. https://doi.org/10.1007/978-3-031-31898-6_22
  • CASANOVA M. T. & KAROL K. G. 2014. - A revision of Chara sect. Protochara, comb. et stat. nov. (Characeae: Charophyceae). Australian Systematic Botany 27: 23-37.https://doi.org/10.1071/ SB13016
  • CHEN K. X., QING R. W., FU H. L., REN L. X., LIU K. H., CAO S. J. & LAN L. Q. 2018. - Identification of a new characteristic species of Nitella (Charophyceae) from southwestern China based on morphology and molecular phylogeny.Plant Systematics and Evolution 304 (1): 123-132. https://doi.org/10.1007/s00606- 017-1456-1
  • CHERNYAGINA O. A. (ED). 2018. -Red Data Book of the Kamchatskiy Krai. Vol. 2. Plants. Kamchatpress, Petropavlovsk-Kamchatsky, 388 p. [In Russian].
  • CHOI K. C. & KIM Y. H. 1997. - Taxonomic study on the charophytes in Korea. I. Chara and Lamprothamnium. Algae 12 (3): 177-206. [In Korean].
  • CHOI K. C. & KIM Y. H. 1998. - Taxonomic study on the charophytes in Korea. II. Nitella. Algae 13 (3): 283-321. [In Korean].
  • CHOU J. Y. & WANG W. L. 2014. - Description of a newly recorded Nitella species, N. mirabilis Nordstedt ex J.Groves (Charales, Charophyta), in Taiwan. Taiwania 59 (1): 76-81. https://doi. org/10.6165/tai.2014.59.76
  • CHOU J. Y., WANG W. L. & CHANG J. S. 2007. - Three members of Characeae (Charales, Chlorophyta) from Taiwan, including one endangered monospecific genus. Botanical Studies 48: 117-126.
  • COLANI M. 1935. - Megalithes du Haut Laos. Publication de l'Ecole Francaise d'Extreme-Orient XXV-XXVI. Les Editions d'art et d'histoire, Paris, 358 p.
  • DANG N. T., HO T. H., DUONG D. T. & MAY D. 2002. - Hydrobiology in inland freshwaters of Vietnam. Science and Technique, Hanoi, 399 p. [In Vietnamese].
  • DARRIBA D., TABOADA G. L., DOALLO R. & POSADA D. 2012. - jModelTest 2: more models, new heuristics and parallel computing. Nature Methods 9, 772.https://doi.org/10.1038/nmeth.2109
  • DEVANTIER-THOMAS T. 2021. - Shaping the stone: experimental approaches to the Plain of Jars megaliths, Lao PDR. Masters (Research) Thesis, James Cook University, 166 p.
  • DHAKAL S., ROMANOV R. E. & RAI S. K. 2025. - New and notable records of two species of Chara (Characeae) in Nepal.The Journal of Japanese Botany 100 (5): 454-458. https://doi.org/10.51033/ jjapbot.ID0318
  • ECHT C. S., ERDAHL L. A. & MCCOY T. J. 1992. - Genetic segregation of random amplified polymorphic DNA in diploid cultivated alfalfa. Genome 35: 84-87. https://doi.org/10.1139/g92-014
  • FARIDI M. A. F. 1955. - A contribution to the Charales of West Pakistan. Biologia (Lahore) 1: 70-81.
  • GALTIER N., GOUY M. & GAUTIER C. 1996. - SEAVIEW and PHYLO_WIN: two graphic tools for sequence alignment and molecular phylogeny. Computer Applications in the Biosciences: CABIOS 12: 543-548. https://doi.org/10.1093/bioinformatics/12.6.543
  • GENOVESE R. 2015. - The Plain of Jars of North Laos: beyond Madeleine Colani. PhD Thesis. SOAS, University of London, 256 p.
  • GMELIN C. C. 1826. - Flora Badensis, Alsatica et confinium regionum cis et transrhenana plantas a lacu Bodamico usque ad confluentem Mosellae et Rheni sponte nascentes: exhibens secundum systema sexuale cum iconibus ad naturam delineates. 4, Supplementa cum Indicibus. In Officina Aul. Mulleriana, Carlsruhae, 808 p., tab. I-IX. https://www.biodiversitylibrary.org/page/6130806
  • GROVES J. 1928. - On Charophyta collected by Mr. Thomas Bates Blow, F. L. S., in Madagascar. Journal of the Linnean Society, Botany 48: 125-137, pl. 4-7.https://doi.org/10.1111/j.1095-8339.1928. tb02578.x
  • GUIRY M. D. 2024. - How many species of algae are there? A reprise. Four kingdoms, 14 phyla, 63 classes and still growing. Journal of Phycology 60 (2): 214-228. https://doi.org/10.1111/jpy.13431
  • GUIRY M. D. & GUIRY G. M. 2024. - AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org [Accessed on 18 February 2024].
  • GUPTA R. K. 2012. - Algae of India. Volume 2. A checklist of Chlorophyceae, Xanthophyceae, Chrysophyceae and Euglenophyceae. Botanical Survey of India, Ministry of Environment & Forests, Salt Lake, Kolkata, 428 p.
  • HAN F. S. & LI Y. Y. (EDS). 1994. - Flora Algarum Sinicarum Aquae Dulcis.Vol. 3: Charophyta. Science Press, Beijing, 267 p. [In Chinese].
  • HOLLERBACH M. M. 1960. - De speciebus novis generis Chara e sectione Haplostephanae Triplostichae. Botanicheskie materialy otdela sporovyh rastenii Botanicheskogo Instituta imeni V. L. Komarova Akademii Nauk SSSR. Notulae Systematicae e Sectione Cryptogamica Instituti Botanici nomini V.L. Komarovii Academiae Scientiarum URSS 13: 101-107. [In Russian and Latin].
  • HO P.-H. 1968. - Quelques Characees du Vietnam. Nien-San (Annals of the University of Cantho) 1: 83-102.
  • HUELSENBECK J. P. & RONQUIST F. 2001. - MRBAYES: Bayesian inference of phylogenetic trees. Bioinformatics 17: 754-755. https://doi.org/10.1093/bioinformatics/17.8.754
  • IMAHORI K. 1950. - Notes on the Asiatic Charophyta II. Botanical Magazine, Tokyo 63 (750): 260-264.
  • IMAHORI K. 1953. - Studies on the Charophyta in Formosa. Science Reports of the Kanazawa University 2 (1): 115-137.
  • IMAHORI K. 1954. - Ecology, phytogeography and taxonomy of Japanese Charophyta. Kanazawa University, Kanazawa, 234 p.
  • IMAHORI K. & KASAKI H. 1977. - Charophyceae, in HIROSE H. & YAMAGISHI Y. (eds), Nihon tansuiso zukan [Illustrations of the Japanese fresh-water algae]. Uchida Rokakuho Publishing Co., Ltd, Tokyo: 761-829. [In Japanese].
  • KAROL K. G. 2004. - Phylogenetic studies of the Charales: the closest living relatives of land plants. PhD Thesis, University of Maryland, United States of America, 164 p.
  • KATO S., SAKAYAMA H., SANO S., KASAI F., WATANABE M. W., TANAKA J. & NOZAKI H. 2008. - Morphological variation and intraspecific phylogeny of the ubiquitous species Chara braunii (Charales, Charophyceae) in Japan. Phycologia 47, 191202. https://doi.org/10.2216/07-27.1
  • KATO S., SAKAYAMA H. & MORISHIMA H. 2010. - Morphology and molecular phylogeny of Chara altaica (Charales, Charophyceae), a monoecious species of the section Desvauxia. Cytologia 75 (2): 211-220. https://doi.org/10.1508/cytologia.75.211
  • KATO S., TANAKA J., TANAKA N., YOKOYAMA J., ITO Y., FUJIWARA Y., HIGA A., KOBAYASHI S., WATANABE M. M. & SAKAYAMA H. 2021. - New distributional records, taxonomy, morphology, and genetic variations of the endangered brackish-water species Lamprothamnium succinctum (Charales: Charophyceae) in Japan. Journal of Asia-Pacific Biodiversity 14 (1): 15-22. https:// doi.org/10.1016/j.japb.2020.09.005
  • KASE L., SOMVONGSA C., INKHAVILAY K., CHRISTENSEN C., IVERSEN L. L., PEDERSEN O. & BAASTRUP-SPOHR L. 2025. - The world's oldest man-made biological experiment. Ecography 2026: e07995. https://doi.org/10.1002/ecog.07995
  • KHAN M. 1991. - Charophytes in time and space: zonal distribution pattern. Bulletin de la Societe Botanique de France. Actualites Botaniques 138 (1): 33-45. https://doi.org/10.1080/01811789 .1991.10827040
  • KHAN M. & SARMA Y. S. R. K. 1984. - Cytogeography and cytosystematics of Charophyta, in IRVINE D. E. G. & JOHN D. M. (eds), Systematics of the Green Algae. Vol. 27. Academic Press, London, Orlando, San Diego, New York, Toronto, Montreal, Sydney, Tokyo: 303-330.
  • KISELEV K. V., DUBROVINA A. S. & TYUNIN A. P. 2015. - The methylation status of plant genomic DNA influences PCR efficiency. Journal of Plant Physiology 175: 59-67. https://doi. org/10.1016/j.jplph.2014.10.017
  • KORSCH H. 2018. - The worldwide range of the charophyte species native to Germany.Rostocker Meeresbiologische Beitrage 28: 45-96.
  • KOZLOV A. M., DARRIBA D., FLOURI T., MOREL B. & STAMATAKIS A. 2019. - RAxML-NG: a fast, scalable and user-friendly tool for maximum likelihood phylogenetic inference. Bioinformatics 35: 4453-4455. https://doi.org/10.1093/bioinformatics/btz305
  • KRISHNAN U. 2006. - Differentiation of Chara gymnopitys A.Br. and Chara hydropitys Reich. by morphological characters, isozyme analysis and oospore wall ornamentation. Cryptogamie, Algologie 27: 473-490.
  • LANGANGEN A. & LEGHARI S. M. 2001. - Some charophytes (Charales) from Pakistan.Studia Botanica Hungarica 32: 63-85.
  • LEE E. Y., BAE E. H., CHOI K. C., KIM J. H. & LEE S. R. 2019. - Molecular taxonomic report of Nitella megacephala sp. nov. (Characeae, Charophyceae) from Korea.Phytotaxa 414 (4): 174- 180. https://doi.org/10.11646/phytotaxa.414.4.3
  • LEE E.-Y., CHOI K. C., LEE S.-R., KIM Y. H., LEE J. E. & KIM J.-H. 2016. - Re-examination of the morphological characteristics and rbc L gene sequences of Chara zeylanica Willdenow (Charales, Charophyceae) in Korea. Aquatic Botany 134: 97-102. https:// doi.org/10.1016/j.aquabot.2016.06.010
  • LING Y. J., XIE S. L. & LANGANGEN A. 2000. - Charales of China. Nova Hedwigia 71 (1-2): 69-94.
  • MACROALGAL HERBARIUM PORTAL. 2024 -https://macroalgae.org/ portal/index.php; [Accessed on 21 September 2024].
  • MANN H., PROCTOR V. W. & TAYLOR A. S. 1999. - Towards a biogeography of North American charophytes. Australian Journal of Botany 47: 445-458. https://doi.org/10.1071/BT97087
  • MEIERS S. T., PROCTOR V. W. & CHAPMAN R. L. 1999. - Phylogeny and biogeography of Chara (Charophyta) inferred from 18S rDNA sequences.Australian Journal of Botany 47: 347-360. https://doi.org/10.1071/BT97089
  • MJELDE M., SWE T., LANGANGEN A. & BALLOT A. 2021. - A contribution to the knowledge of charophytes in Myanmar; morphological and genetic identification and ecology notes. Botany Letters 168 (1): 102-109. https://doi.org/10.1080/238 18107.2020.1847189
  • MOODY K. 1989. - Weed reported in rice in South and Southeast Asia. International Rice Research Institute, Los Banos, Philippines, 442 p.
  • NAZ S., DIBA N. J. & SCHUBERT H. 2011. - Monograph on charophytes of Bangladesh. VDM Verlag Dr. Muller, Saarbrucken, 204 p.
  • NOZAKI H., KODO M., MIYAJI K., KATO M., WATANABE M. M. & KASAKI H. 1998. - Observations on the morphology and oospore wall ornamentation in culture of the rediscovered Japanese endemic Nitella gracilens (Charales, Chlorophyta). European Journal of Phycology 33: 357-359. https://doi.org/10.1080/096 70269810001736853
  • PAL B. P. 1932. - Burmese Charophyta. Journal of the Linnean Society of London, Botany 49: 47-92. https://doi. org/10.1111/j.1095-8339.1932.tb00382.x
  • PAL B. P., KUNDU V. S., SUNDARALINGAM V. S. & VENKATARAMAN G. S. 1962. - I.C.A.R. Monographs on algae. Vol. 5: Charophyta. Indian Council of Agricultural Research, New Delhi, 130 p.
  • PATEL R. J. & JAWALE A. K. 1979. - Chara pseudohydropitys Imah. - a new record for India. Geobios 6: 181-183.
  • PHAM M. N., TAN H. T. W., MITROVIC S. & YEO H. H. T. 2011. - A checklist of the algae of Singapore, 2nd edition. Raffles Museum of Biodiversity Research, National University of Singapore, Singapore, 99 p. http://rmbr.nus.edu.sg/raffles_museum_pub/ singapore_algae_checklist_second_edition.pdf
  • PROCTOR V. W. 1980. - Historical biogeography of Chara (Charophyta): an appraisal of the Braun-Wood classification plus a falsifiable alternative for future consideration. Journal of Phycology 16: 218-233. https://doi.org/10.1111/j.1529-8817.1980. tb03023.x
  • PROCTOR V. W. 1990. - Characeae of Llano Estacado (Texas and adjacent New Mexico) playas. Journal of Biogeography 17: 75-84. https://doi.org/10.2307/2845189
  • PUNDHIR H. S., GAUTAM A. & VIDYAVATI 1994. - Some charophytes from Aligarh District, Uttar Pradesh. Phykos 33 (1 & 2): 1-9.
  • QIU L. C. & LING Y. J. 2005. - Charophyte flora in China. Acta Botanica Boreali-Occidentalia Sinica 25 (8): 1682-1684. [In Chinese].
  • QIU L. C. & LING Y. J. 2007. - Studies on distribution of Characeae in China. Acta Hydrobiologica Sinica 31 (5): 755-759. [In Chinese].
  • RAAM J. C. VAN 2010. - Annotated bibliography of the Characeae, 2nd edition. CD. Chara Boek, Hilversum.
  • ROMANOV R. E. 2021. - Typification of Chara (Charales, Charophyceae) species described by C. F. Lessing, F. J. Ruprecht and M. M. Hollerbach. Notulae Algarum 213: 1-7.
  • ROMANOV R. E., BARINOVA S. S., NIKULIN YU. V. & GONTCHAROV A. A. 2022a. -Chara lipkinii (Charales, Charophyceae): a new dioecious Mediterranean species under risk of extinction in the wild and some implications for the taxonomy of the genus Chara. Fottea, Olomouc 22 (1): 1-12.https://doi.org/10.5507/fot.2021.012
  • ROMANOV R. E., CHEMERIS E. V., VISHNYAKOV V. S., CHEPINOGA V. V., AZOVSKII M. G., KUKLIN A. P. & TIMOFEEVA V. V. 2014. - Chara strigosa (Streptophyta: Charales) in Russia. Botanicheskij Zhurnal 99 (10): 1148-1161. [In Russian].https:// doi.org/10.1134/S1234567814100097
  • ROMANOV R. E., GONTCHAROV A. A. & BARINOVA S. S. 2015. - Chara globata Mig. (Streptophyta: Charales): rare species revised. Fottea, Olomouc 15: 39-50. https://doi.org/10.5507/fot.2015.004
  • ROMANOV R. E., NIKULIN A. YU., NIKULIN V. YU. & GONTCHAROV A. A. 2022b. - New species Chara oryzae and a new section Corillionia of Chara (Charales, Charophyceae) from European Mediterranean rice fields. European Journal of Phycology 57 (3): 328-342. https://doi.org/10.1080/09670262.2021.1987527
  • ROMANOV R. E., BARINOVA S. S., NIKULIN V. YU & GONTCHAROV A. A. 2023. - 'Unfinished' morphogenesis hides different speciation pathways in charophytes: evidence from 190-year-old original material of Chara denudata (Charales, Charophyceae). Diversity. 2023 15: 249. https://doi.org/10.3390/d15020249
  • ROMANOV R. E., NIKULIN V. YU., NIKULIN A. YU., IVANOV S. D. & GONTCHAROV A. A. 2025. - Nitella hollerbachii (Charophyceae, Characeae) - a new species from Pacific Asia. Phytotaxa 715 (3): 179-206. https://doi.org/10.11646/phytotaxa.715.3.1
  • ROMANOV R. E., NIKULIN V. YU., NIKULIN A. YU., ZHAKOVA L. V. & GONTCHAROV A. A. 2026. - Morphology and phylogenetic affinity of Chara hanii, nom. nov. (Charophyceae, Characeae) from Xinjiang, China. Phytotaxa 740 (1): 50-62. https://doi. org/10.11646/phytotaxa.740.1.4
  • ROMANOV R. E., NIKULIN V. YU., VISHNYAKOV V. S., TSEGMID B., EFREMOV A. N. & ZHAKOVA L. V. 2024. - Tolypella mongolica (Charophyceae, Characeae): A new dioecious charophyte species from the center of Eurasia and implications for charophyte taxonomy, including the validation of T. porteri and the new combination for T. jwalae. Phytotaxa 659 (1): 24-40. https:// doi.org/10.11646/phytotaxa.659.1.2
  • ROMANOV R. E., NIKULIN V. YU., YEO R. S. W., HO B. C. & GONTCHAROV A. A. 2020. - Nitella singaporensis (Charophyceae, Charales): new species and implications for the taxonomy of the genus Nitella. Phytotaxa 438 (2): 80-94. https://doi. org/10.11646/phytotaxa.438.2.2
  • ROMANOV R. E., VIDAL-RUSSELL R., NIKULIN V. YU., GONTCHAROV A. A. & QUIROGA M. P. 2022c. -Nitella sonderi (Charales, Charophyceae) - a new record for South America, and first record from outside Australia. Cryptogamie, Algologie 43 (13): 201-213. https://doi.org/10.5252/cryptogamie-algologie2022v43a13
  • ROMANOV R. E. & ZHAKOVA L. V. 2024. - Chara uzbekistanica, in SCHUBERT H., BLINDOW I., NAT E., KORSCH H., GREGOR T., DENYS L., STEWART N., VAN DE WEYER K., ROMANOV R. & CASANOVA M. T. (eds), Charophytes of Europe. Springer, Berlin, Heidelberg: 673-680. https://doi.org/10.1007/978-3-031- 31898-6_50
  • SAKAYAMA H. 2008. - Taxonomy of Nitella (Charales, Charophyceae) based on comparative morphology of oospores and multiple DNA marker phylogeny using cultured material (Review). Phycological Research 56 (3): 202-215.https://doi.org/10.1111/j.1440- 1835.2008.00502.x
  • SAKAYAMA H., ARAI S., NOZAKI H., KASAI F. & WATANABE M. M. 2006. - Morphology, molecular phylogeny and taxonomy of Nitella comptonii (Charales, Characeae). Phycologia 45 (4): 417- 421. https://doi.org/10.2216/05-31.1
  • SAKAYAMA H., HARA Y., ARAI S., SATO H. & NOZAKI H. 2004a. - Phylogenetic analyses of Nitella subgenus Tieffallenia (Charales, Charophyceae) using nuclear ribosomal DNA internal transcribed spacer sequences. Phycologia 43 (6): 672-681. https:// doi.org/10.2216/i0031-8884-43-6-672.1
  • SAKAYAMA H., HARA Y. & NOZAKI H. 2004b. - Taxonomic re-examination of six species of Nitella (Charales, Charophyceae) from Asia, and phylogenetic relationships within the genus based on rbc L and atp B gene sequences. Phycologia 43 (1): 91-104. https://doi.org/10.2216/i0031-8884-43-1-91.1
  • SAKAYAMA H., KAI A., NISHIYAMA M., WATANABE M. M., KATO S., ITO M., NOZAKI H. & KAWAI H. 2015. - Taxonomy, morphology, and genetic variation of Nitella flexilis var. bifurcata (Charales, Characeae) from Japan. Phycological Research 63 (3): 159-166. https://doi.org/10.1111/pre.12085
  • SAKAYAMA H., KASAI F., NOZAKI H., WATANABE M. M., KAWACHI M., SHIGYO M., NISHIHIRO J., WASHITANI I., KRIENITZ L. & ITO M. 2009. - Taxonomic reexamination of Chara globularis (Charales, Charophyceae) from Japan based on oospore morphology and rbc L gene sequences, and the description of C. leptospora sp. nov. Journal of Phycology 45 (4): 917-927. https://doi.org/10.1111/ j.1529-8817.2009.00700.x
  • SAKAYAMA H., MIYAJI K., NAGUMO T., KATO M., HARA Y. & NOZAKI H. 2005. - Taxonomic re-examination of 17 species of Nitella subgenus Tieffallenia (Charales, Charophyceae) based on internal morphology of the oospore wall and multiple DNA marker sequences. Journal of Phycology 41 (1): 195-211. https:// doi.org/10.1111/j.1529-8817.2005.04133.x
  • SAKAYAMA H., NOZAKI H., KASAKI H. & HARA Y. 2002.- Taxonomic re-examination of Nitella (Charales, Charophyceae) from Japan, based on microscopical studies of oospore wall ornamentation and rbc L gene sequences. Phycologia 41 (4): 397-408. https:// doi.org/10.2216/i0031-8884-41-4-397.1
  • SAKAYAMA H., SHIMIZU M. & HIGA A. 2024. - Taxonomy, morphology and phylogenetic placement of a new species Nitella pluripapillifera sp. nov. (Charales, Charophyta) from Japan. Phycologia 63 (5): 480-489. https://doi.org/10.1080/0031888 4.2024.2400036
  • SCHUBERT H., BLINDOW I., NAT E., KORSCH H., GREGOR T., DENYS L., STEWART N., VAN DE WEYER K., ROMANOV R. & CASANOVA M. T. (EDS) 2024. - Charophytes of Europe. Springer, Berlin, Heidelberg, [i]-xiii, [1]-1144. https://doi.org/10.1007/978- 3-031-31898-6
  • SOULIE-MARSCHE I. & VAUTIER J. 2004. - Ecologie et cycle de vie de Chara braunii (Charales) dans un habitat mediterraneen. Vie et Milieu 54 (1): 37-45.
  • SONG Q., LIU X., NAN F., LIU Q., LV J., FENG J., LI R. & XIE S. 2022. - Chara zhengzhouensis (Characeae, Charophyta), a new freshwater algal species described from North China. Diversity 14, 864. https://doi.org/10.3390/d14100864
  • STAMATAKIS A., HOOVER P. & ROUGEMONT J. 2008. - A rapid bootstrap algorithm for the RAxML web servers.Systematic Biology 57 (5): 758-771.https://doi.org/10.1080/10635150802429642
  • SUBRAMANIAN D. 2002. -Monograph on Indian Charophyta. Bishen Singh Mahedra Singh Publications, Debradun, 110 p.
  • SUBRAMANIAN D. 2018. - Indian Charophyta. MJP Publishers, Chennai, New Dehli, Tirunelveli, 197 p.
  • SUNDARALINGAM V. S. 1966. - Studies on Indian Charophyta - V. Developmental morphology of two more species of Chara. Phykos 5: 198-215.
  • SUVATTI C. 1978. - Flora of Thailand. Vol. 2. Royal Institute, Bangkok: 695-1503.
  • SUZUKI M., SAKAYAMA H., UEDA S. & HIRAI N. 2025. - Records and habitat conditions of three species of Nitella (Charales, Charophyceae) in irrigation ponds in Osaka, Japan.Bulletin of Kansai Organization for Nature Conservation 47 (1): 33-47. [In Japanese].
  • SWOFFORD D. L. 2002. - PAUP*. Phylogenetic Analysis Using Parsimony (*and Other Methods).Version 4.0b10. Sinauer Associates, Sunderland, 142 p.
  • THIERS B. 2024. - Index herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden's Virtual Herbarium. http://sweetgum.nybg.org/ih/ [continuously updated].
  • TINDALL D. R. 1966. - The systematics and ecology of the Characeae (Nitella and Chara) of southwestern United States and northern Mexico. Ph.D. Dissertation, University of Louisville, 229 p.
  • TURLAND N. J., WIERSEMA J. H., BARRIE F. R., GANDHI K. N., GRAVENDYCK J., GREUTER W., HAWKSWORTH D. L., HERENDEEN P. S., KLOPPER R. R., KNAPP S., KUSBER W.-H., LI D.-Z., MAY T. W., MONRO A. M., PRADO J., PRICE M. J., SMITH G. F. & ZAMORA SENORET J. C. (EDS) 2025. - International code of nomenclature for algae, fungi, and plants (2025 Edition Madrid Code). Regnum Vegetabile162. The University of Chicago Press, Chicago & London: [i]-xlvii, 1-303.
  • WOOD R. D. & IMAHORI K. 1965. - A revision of the Characeae, in WOOD R. D. & IMAHORI K. (eds), A revision of the Characeae. Vol. 1. J. Cramer, Weinheim: i-xxiv, 1-904.
  • YONGYUTH C. 1977. - A taxonomic study of the Characeae of Thailand. Chulalongkorn University, Thesis (M.Sc.), 91 p.
  • ZANEVELD J. S. 1940. - The Charophyta of Malaysia and adjacent countries. Blumea 4: 1-224.