Trachelium caeruleum subsp. isabellinum Voss subspecies synonym

Trachelium caeruleum subsp. brevidentatum Sennen & Mauricio subspecies synonym

Trachelium caeruleum subsp. longiflorum Sennen & Mauricio subspecies synonym

Trachelium caeruleum L. species accepted

Trachelium caeruleum f. isabellinum Voss form synonym

Trachelium azureum Gouan species synonym

Trachelium caeruleum f. longiflorum Sennen & Mauricio form synonym

Trachelium caeruleum f. brevidentatum Sennen & Mauricio form synonym

Trachelium ×halteratum (Bianca ex Ces., Pass. & Gibelli) Sandwith species accepted

Trachelium caeruleum subsp. halteratum (Bianca ex Ces., Pass. & Gibelli) Nyman subspecies synonym

Trachelium lanceolatum Guss. species accepted

Trachelium caeruleum var. lanceolatum (Guss.) Ces., Pass. & Gibelli variety synonym

Trachelium caeruleum var. halteratum Bianca ex Ces., Pass. & Gibelli variety synonym

Trachelium caeruleum subsp. lanceolatum (Guss.) Arcang. subspecies synonym

Trachelium caeruleum var. halteratum Bianca variety homotypic synonym