Generic article

Lactuca acanthifolia (Willd.) Boiss.

Nomenclature
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