1	Fruit glabrous; the central umbel 13 to 21 rays; lateral umbels with 7 to 13 rays	subsp. ilgazense
–	Fruit with hairs; the central umbel 22 to 70 rays; lateral umbels with 13 to 47 rays
2	Basal leaves glabrous	subsp. crithmifolium
–	Basal leaves puberulent or finely pubescent	subsp. gummiferum