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February 9, 2026Nordic Journal of BotanyOpen Access

Isoetes ×atruensis (Isoetaceae – Lycopodiopsida), a new interspecific sterile hybrid from Rajasthan of Western India

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Authors

SSS. K. SinghDBDaniel BruntonPSPradeep K. Shukla

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Overview

Researchers identify a new sterile aquatic hybrid, Isoetes × atruensis, in Rajasthan, suggesting biodiversity in hybrids.

Key Points

  • The aim is to identify and describe a new interspecific hybrid, Isoetes × atruensis, found in Rajasthan.
  • Identification of the hybrid based on morphological characteristics and ploidy level.
  • The hybrid is a triploid derived from I. coromandelina and I. rajasthanensis.
  • Field studies conducted in two separate locations in Rajasthan.
  • Isoetes × atruensis is characterized as a triploid (2n = 33 + 1) sterile hybrid.
  • The hybrid demonstrates morphological features that are intermediate to its parent species.
  • It is the second reported Isoetes hybrid from the Indian subcontinent, confirmed from multiple sites.

Cite This Study

Singh et al. (2026) studied this question.

synapsesocial.com/papers/698979a6f0ec2af6756e775bhttps://doi.org/10.1002/njb.05068
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Isoetes in Rajasthan-a Systematic Study2024
  2. 2Isoetes bilaspurensis (Isoetaceae – Lycopodiopsida), New to Southern India: An Extended Distribution and Redescription2024
  3. 3Apogamous Isoetes coromandelina L.f. (Isoetaceae) with asynaptic meiosis2024 · 1 citations
  4. 4Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence2024 · 1 citations
  5. 5Rediscovery of the originally designated “type specimens” of Isoetes sahyadrii (Isoetaceae—Lycopodiopsida) and its nomenclatural implications2025