Cross-section of the middle achene part of Scorzonera stricta (from V. Prima 485 (LE)). Abbreviations in pericarp: oe – outer epidermis, ac – air cavity, p – parenchyma, scl – sclerenchyma, vb – vascular bundles, ie – inner epidermis; abbreviations in seed: sc – seed coat, en – endosperm, sh – seed hollow (embryo not shown).