10a. Fruit a dry dehiscent capsule; flowering calyx more than 1.5 cm, lobed or divided halfway; corolla more
than 2.5 cm.
11a. Stems mostly underground; normal leaves forming a rosette at stem apex, scaly leaves distributed along new stems; flowers mostly included within rosette ................................................................................... 5. Przewalskia
11b. Stems aboveground; normal leaves borne along stems, scaly leaves absent; flowers arising along stem or apically in leaf axils.
12a. Leaves mostly subsessile, petiole if present winged; pedicel less than 5 mm; calyx lobes sharp
pointed, with noticeable marginal veins ............................................................................................... 6. Hyoscyamus
12b. Leaves petiolate, petiole wingless; pedicel more than 5 mm; calyx lobes blunt, lacking marginal
veins.
13a. Corolla zygomorphic, funnelform; stamens unequal; calyx lobes alike; fruiting pedicel not
thickened .............................................................................................................................................. 4. Atropanthe
13b. Corolla regular, campanulate; stamens subequal; calyx lobes differing in size and/or shape;
fruiting pedicel thickened ...................................................................................................................... 3. Anisodus