
Lactuca quercina
Lactuca quercina
Safety & Hazards
Although no specific mention of toxicity has been seen for this species, many plants in this genus contain a narcotic principle, this is at its most concentrated when the plant begins to flower. This principle has been almost bred out of the cultivated forms of lettuce but is produced when the plant starts to go to seed[ 13 Title Hamlyn Encyclopaedia of Plants. Publication Author Triska. Dr. Publisher Hamlyn Year 1975 ISBN 0-600-33545-3 Description Very interesting reading, giving some details of plant uses and quite a lot of folk-lore. ].
Botanical Description
Lactuca quercina is an annual to biennial plant growing from a thickened rootstock. It produces a basal rosette of leaves and a central stem 50 - 200cm tall, though more commonly 80 - 150cm tall[ 74 Title Flora of the USSR. Publication Author Komarov. V. L. Website http://www.biodiversitylibrary.org Publisher Israel Program for Scientific Translation Year 1968 ISBN - Description An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet. ]. The plant is harvested from the wild for local use as a food and medicine