Tulip, Tulipa.

Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu', A single purple blue flower with white stamens.

Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu', Purple blue buds opening among green leaves on a shrub.

Hibiscus, Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu' close up showing stamen.