Isoetes sampathkumarnii L.N.Rao (1944)

Taxonomy & Nomenclature

Synonym/s: Isoetes sampathkumarani L.N.Rao (1944)

A synonym of I. coromandelina according to (Chandra, 2008:177; Kumar, 2011), a synonym of I. sahyadrii according to (Hassler, 2004-2023), but regarded as a valid species by (Singh et al., 2021).

Conservation Status

Extinct (Walter & Gillett, 1998; Rao et al., 2003:1; Singh et al., 2021) or invalid (synonym of Isoetes coromandelina) (Kumar, 2011) or invalid (synonym of I. sahyadrii) (Hassler, 2004-2023)

IUCN RedList status: treated as a synonym of Isoetes coromandelina

Both known localities have been destroyed, and searches have failed to find any individuals (Singh et al., 2021:11).

Distribution

Bangalore district, Karnataka, India

The species has previously been recorded at two localities in the Bangalore district (Singh et al., 2021:10)

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Rao, L. N. (1944). A new species of Isoëtes from Bangalore, Mysore state. Current Science 13(11): 286-287.

Other references:

Chandra, Subhash, Fraser-Jenkins, C. R., Kumari, Alka and Srivastava, Archana. (2008). A Summary of the Status of Threatened Pteridophytes of India. Taiwania 53(2): 170-209.

Fraser-Jenkins, Christopher Roy. (2012). Rare and Threatened Pteridophytes of Asia 2. Endangered Species of India — the Higher IUCN Categories. Bulletin of the National Museum of Nature and Science, Series B. 38(4): 153-181.

Fraser-Jenkins, C. R., Gandhi, K. N., Kholia, B. S. and Benniamin, A. (2016). An annotated checklist of Indian pteridophytes part I (Lycopodiaceae to Thelypteridaceae). Dehradun (India): Bishen Singh Mahendra Pal Singh.

Freund, Forrest D., Freyman, William A. and Rothfels, Carl J. (2018). Inferring the evolutionary reduction of corm lobation in Isoëtes using Bayesian model-averaged ancestral state reconstruction. American Journal of Botany 105(2): 275-286. https://doi.org/10.1002/ajb2.1024

Hassler, Michael. (2004-2023). World Ferns. Synonymic Checklist and Distribution of Ferns and Lycophytes of the World. Version 17.2; last update Oct. 18th, 2023. Available at: https://www.worldplants.de/ferns/ [Accessed 21 October 2023]

Khoshoo, T. N. (1996). India needs a National Biodiversity Conservation Board. Current Science 71(7): 506-513.

Kumar, B. (2011). Isoetes coromandelina. The IUCN Red List of Threatened Species 2011: e.T168987A6558635. https://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T168987A6558635.en. Downloaded on 18 November 2016.

Rao, C. Kameswara, Geetha, B. L. and Suresh, Geetha. (2003). Red List of Threatened Vascular Plant Species in India: Compiled from the 1997 IUCN Red List of Threatened Plants. ENVIS Centre on Floral Diversity, Botanical Survey of India, Kolkata. xxiv + 144 pp. [automatic download]

Shukla, Pradeep Kumar, Srivastava, Gopal Krishna and Shukla, Santosh Kumar. (2002). The quillworts (Isoetes) of India: distribution, endemism and species radiation. Biodiversity & Conservation 11: 959-973. https://doi.org/10.1023/A:1015868228530

Singh, Sarvesh Kumar, Shukla, Pradeep Kumar, Brunton, Daniel F., Dubey, Nawal Kishore and Shukla, Santosh Kumar. (2021). The taxonomy and conservation status of Isoetes (Isoetaceae; Lycopodiopsida) in India. Botany Letters 168(2): 200-226. https://doi.org/10.1080/23818107.2020.1848621

Singh, Sarvesh Kumar, Shukla, Santosh Kumar, Dubey, Nawal Kishore and Shukla, Pradeep Kumar. (2018). Isoetes ×gopalkrishnae (Isoetaceae), a new interspecific sterile hybrid from Central India. Phytotaxa 362(1): 68-76. https://doi.org/10.11646/phytotaxa.362.1.5

Srivastava, Gopal Krishna. (1997). Extinct species. Current Science 72(7): 430.

Troìa, Angelo, Pereira, Jovani B .S., Kim, Changkyun and Taylor, W. Carl. (2016). The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa. Phytotaxa 277(2): 101-145. https://doi.org/10.11646/phytotaxa.277.2.1

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp. [listed as Extinct]

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