Lactuca longidentata DC.

Nomenclature
Cichorieae Portal Lactuca longidentata DC.
Euro+Med Plantbase Lactuca longidentata DC.


Native distribution
Europe Italy (Sardinia)


Key features
Lettuce gene pool Tertiary relative
Chromosome number 2n = 16
Habitat Shady rocks; humid canyons
Life history Biennial; perennial
Flower colour Yellow
EURISCO (Dec. 2017) 0 accessions


Morphological description
Plant Height up to 100 cm, glabrous
Rosette leaves Obovate to oblong-spathulate in outline, pinnately lobed to laciniate-runcinate, narrowed into a decurrent stalk-like base. Segments lanceolate with entire or toothed margins, undivided part of lamina 2-8 cm wide
Stem Erect, terete, greyish, branched in the upper part
Stem leaves Ovate in outline with acute apex and semi-amplexicaul base
Inflorescence Pyramidal panicle with ascendent branches
Heads 5-8 florets. Involucral bracts oblong, 12-14 mm long, acute. Ligules yellow
Achenes Oblong, 7-10 mm long, black, with 7-12 shallow ribs. Beak equalling 1/3 of the body. Pappus white
Reference Source: Cichorieae Portal - based on Feráková V. (1977) The Genus Lactuca in Europe. Bratislava