Lactuca fragilis Asso, Syn. Stirp. Aragon.: 109. 1779 Lactuca fragilis Asso, Syn. Stirp. Aragon.: 109. 1779is basionym for Launaea fragilis (Asso) Pau in Bol. Soc. Aragonesa Ci. Nat. 16: 68. 1917Taxon for this nameLactuca fragilis Asso, Syn. Stirp. Aragon.: 109. 1779