A new species of Trigonella sect. Ellipticae (Leguminosae-Papilionoideae) from Iran, including cytogenetic and anatomical notes

Abstract

A new species, Trigonella bakhtiarica, from the Iranian province Chahar Mahal Va Bakhtiari is described, illustrated and compared to its most closely related species, T. aphanoneura. Trigonella bakhtiarica has a longer corolla and differs in the shape, surface and size of its pods, which are taxonomically informative characters in Trigonella sect. Ellipticae. Chromosome counts and meiosis assays show that both species are diploid, and that their euploid plants possess a somatic chromosome number of 2n = 2x = 16, which is consistent with the predicted base number of x = 8.

Notes on the taxonomy of some perennial species of Trigonella sect. Ellipticae (Fabaceae) in Iran

“…& Gontsch.) have been added by Ranjbar et al (2012a, b2012b, 2014)2014 and Ranjbar and Hajmoradi (2015) from Iran. The last two were listed by Rechinger (1984) as endemic to Afghanistan.…”

“…Among the 48 taxa of Trigonella reported from Iran, 15 (32%) are endemic and 14 species belong to T. sect. Ellipticae (Rechinger 1984, Hamzeh'ee 2000, Janighorban 2004, Badrzadeh and Ghafarzadeh‐Namazi 2009, Ranjbar et al 2012a, b2012b, Ranjbar and Hajmoradi 2015, 2016). The section consists of perennials with entire or dentate stipules, yellow or rarely white or dark violet petals with violet veins, a campanulate calyx, generally transversely veined and wingless or thin winged pods, and smooth seeds.…”