Lactuca quercina L. subsp. wilhelmsiana (DC.) Feráková

Nomenclature
The Plant List Lactuca quercina L. subsp. wilhelmsiana (DC.) Feráková
Cichorieae Portal Lactuca quercina L. subsp. wilhelmsiana (DC.) Feráková
Euro+Med Plantbase Lactuca quercina L. subsp. wilhelmsiana (DC.) Feráková


Native distribution
Europe Albania; Bulgaria; Montenegro; Romania; Ukraine
Asia Armenia; Azerbaijan; Georgia; Iran; Turkey


Key features
Lettuce gene pool Tertiary relative
Chromosome number 2n = 18
Habitat Steppe; wood-steppe
Life history Biennial; perennial
Breeding system Autogamous
Flower colour Yellow
EURISCO (Dec. 2017) 2 accessions


Morphological description
Plant Height up to 100 cm, tuberous root
Rosette leaves Rossulate, pinnate lobed to pinnatisect
Stem Erect, striate, glabrous, branched in the upper part
Stem leaves Oblong, elliptic to oblong lanceolate in outline, 8-12 cm long, non-lobed or pinnatilobed to pinnatisect with 2-4 lateral segments, sessile. Terminal segment oblong, triangulate
Inflorescence Thyrsoid panicle
Heads Numerous, oblong-ovoid, consisted of 8-22 florets. Involucre 11-14 mm long, 5-8 mm broad, inner bracts scarious marginate
Achenes Oblong elliptic to obovate, 6.0-7.2 mm long, 9-14 ribbed, black. Beak concolorous, at least as long as 1/2 of the body (up to 3.1 mm). Pappus 5.0-6.5 mm long, white, deciduous
Reference Cichorieae Portal - based on Feráková V. (1977) The Genus Lactuca in Europe. Bratislava