Lactuca virosa L. subsp. livida (Boiss. & Reut.) Ladero & A. Velasco

Nomenclature
The Plant List Lactuca virosa L. subsp. livida (Boiss. & Reut.) Ladero & A. Velasco
GRIN Taxonomy Lactuca virosa L. subsp. livida (Boiss. & Reut.) Ladero & A. Velasco
Cichorieae Portal Lactuca virosa L. subsp. livida (Boiss. & Reut.) Ladero & A. Velasco
Euro+Med Plantbase Lactuca virosa L. subsp. livida (Boiss. & Reut.) Ladero & A. Velasco


Native distribution
Europe Spain


Key features
Lettuce gene pool Tertiary relative
Chromosome number 2n = 18
Habitat Woodland borders; rocks
Life history Annual; biennial
Breeding system Autogamous
Flower colour Yellow
EURISCO (Dec. 2017) 4 accessions


Morphological description
Stem Erect, glaucous, prickly, often violet-tinged
Rosette leaves Oblong-spathulate in outline, undivided to pinnate lobed to pinnatisect, narrowed into a long petiole
Stem leaves Upper leaves runcinate with obtuse apex and sagittate base, all spinulose on the midrib and lateral nerves below
Inflorescence Broad pyramidal panicle with ascending branches
Heads Many (±25) florets. Involucral bracts ovate-lanceolate. Ligules yellow
Achenes Not more than 7 mm long, 5-6 ribs, black. Beak white, filiform, as long as or shorter than body. Pappus white
Reference description of Lactuca livida in Feráková V. (1977) The Genus Lactuca in Europe. Bratislava