Lactuca acanthifolia (Willd.) Boiss.

The Plant List Lactuca acanthifolia (Willd.) Boiss.
GRIN Taxonomy Lactuca acanthifolia (Willd.) Boiss.
Cichorieae Portal Lactuca acanthifolia (Willd.) Boiss.
Tropicos Lactuca acanthifolia (Willd.) Boiss.
Euro+Med Plantbase Lactuca acanthifolia (Willd.) Boiss.

Native distribution
Europe Greece
Asia Turkey

Key features
Lettuce gene pool Tertiary relative
Chromosome number 2n = 18
Habitat Seashore cliffs; rocky slopes
Life history Perennial
Flower colour Yellow
EURISCO (Dec. 2017) 0 accessions

Morphological description
Plant Height 30-150 cm
Rosette leaves Oblong-ovate or obovate, 12-35 cm long, 3-10 cm wide, rarely entire, pinnatifid or pinnatisect, dentate or entire, petiole-like attenuate, woolly, arachnoid or glabrous
Stem Erect, often tinged purple, glabrous or arachnoid or woolly at base, striate, usually unbranched
Stem leaves Obovate or oblong-ovate, entire to pinnatisect, auriculate, glabrous, woolly or arachnoid. Upper leaves pinnatipartite, auriculate
Inflorescence Spiciform or paniculiform, with many heads. Peduncle covered with bracts
Heads 5 flowers. Involucral bracts ovate, 10-15 mm long, acute to obtuse, minutely ciliate at apex, margin scarious. Corolla ligulate, yellow
Achenes Cylindrical-ovoid in outline, 8-9 mm long, yellowish brown, with 5-7 ribs, with a filiform beak. Beak half as long to about as long as the corpus. Pappus white
Reference Cichorieae Portal - based on Feráková V. (1976) Lactuca L. In: Tutin G. et al. (eds) Flora Europaea 4. Cambridge; Feráková V. (1977) The Genus Lactuca in Europe. Bratislava