Hackelia nelsonii Lappula coerulescens Rochelia patens Lappula subdecumbens var. coerulescens Hackelia coerulescens Hackelia diffusa var. coerulescens Hackelia caerulescens Echinospermum patens Echinospermum subdecumbens Hackelia diffusa var. caerulescens
World Flora Online, accessed June 20, 2024