Isoetes ×atruensis (Isoetaceae – Lycopodiopsida), a new interspecific sterile hybrid from Rajasthan of Western India
Abstract
Isoetes × atruensis hyb. nov. is shown to be a triploid (2 n = 3× = 33 + 1) sterile interspecific hybrid between diploid (2 n = 2× = 22 + 1) I. coromandelina and tetraploid (2 n = 4× = 44 + 1) I. rajasthanensis . It has been found in two locations in Rajasthan, India. It is a perennial, shallow‐water aquatic best distinguished by a set of morphological characteristics and a ploidy level that is intermediate between its putative parents. Isoetes × atruensis is the second Isoetes hybrid taxon reported from the Indian subcontinent and the first to be confirmed from multiple locations on the subcontinent.
Fields of Study & Subjects
Fern and Epiphyte Biology
Plant Taxonomy and Phylogenetics
Bryophyte Studies and Records
Publication details
- Journal / source
- Nordic Journal of Botany
- Volume
- 2026
- Issue
- 7
- Publication date
- 6 February 2026
- Language
- EN