Comparative illustration of V. delphicum subsp. cervi and subsp. delphicum differential traits: A, C, Esubsp. cerviB, D, Fsubsp. delphicumA, B first-year mature rosette-leaves of cultivated plants, bar = 10 cm C, D cross section of leaves indicating the shorter and darker indumentum of subsp. cervi, bars = 3 mm E, F anterior stamens, bars = 1 mm;