Agathyrsus floridanus D.Don
Cicerbita spicata Beauverd
Lactuca spicata Hitchc.
Mulgedium spicatum Small
Sonchus biennis Moench
Sonchus spicatus Lam.
Common Name: Tall Blue Lettuce
Lactuca biennis is an erect, annual to biennial plant growing from a taproot. It produces a basal rosette of leaves and a single, branched stem that grows from 15 - 300cm or more tall but usually between 75 - 200cm[
The plant is harvested from the wild for local use as a medicine..
Eastern N. America - southern Alaska and Yukon to Newfoundland and Labrador, south to California, New Mexico, Tennessee and North Carolina
Swamps, stream banks, woods; at elevations from 900 - 1,500 metres[
The root is analgesic, antiemetic and haemostatic[
]. A decoction has been used in the treatment of body pain, but not pain in the limbs[
]. The decoction has also been used in the treatment of haemorrhages, heart and lung troubles, diarrhoea, nausea and vomiting[
The milky sap is applied topically to skin eruptions[
The leaves are diuretic, sedative and nervine[
Applied topically, the leaves are used to relieve stings[
Seed - sow spring in situ and only just cover the seed. Germination is usually fairly quick.