Schemes (A, C) and cross-sections of the achenes (B, D). A, B Scorzonera humilis (Scorzonera clade), B from Tikhomirov & al. s.n. (MW0550805) C, D S. rhodantha (S. purpurea clade), D from Rechinger 18566 (B). Designation of the colours in A and C orange (C) – mechanical subepidermal parenchyma; yellow – thin-walled parenchyma (very small in C below the sclerenchyma); red – sclerenchyma (of parallel orientation); blue – seed coat; violet dots (A, C) – vestiges of vascular bundles in both pericarp and seed coat (A) and in the pericarp (C); green – endosperm; central white area – seed hollow.

  Part of: Zaika MA, Kilian N, Jones K, Krinitsina AA, Nilova MV, Speranskaya AS, Sukhorukov AP (2020) Scorzonera sensu lato (Asteraceae, Cichorieae) – taxonomic reassessment in the light of new molecular phylogenetic and carpological analyses. PhytoKeys 137: 1-85.