Tulipa sylvestris subsp. sylvestris  

Stem at least 2.5 mm in diameter (above the uppermost leaf). Lowest leaf at least 1.2 cm wide. Outer perianth-segments (35-)36-63 x 8-18 mm, sometimes tinged with green outside on the back, the inner (35-)37-70 x 16-26 mm. Filaments 9-14 mm; anthers 4-9 m