Trifolium caeruleum Linnaeus, Species Plantarum 2: 764. 1753.

"Habitat in Bohemia, Lybia." RCN: 5637.

Lectotype (Lassen in Turland & Jarvis in Taxon 46: 481. 1997): Herb. Linn. No. 930.1 (LINN) .

Current name: Trigonelia caerulea (L.) Ser. ( Fabaceae: Faboideae).

Note: Specific epithet spelled " M. caerulea " [ “M.” for “Melilotus”] in the protologue. Later corrected to T. caeruleum in Systema Naturae, ed. 10, 2: 1176 (1759). As is established custom, the “Melilotus” is to be ignored (see Art. 23.8 and Ex. 19).