Tall Lettuce

Lactuca canadensis L.

Asteraceae (Aster Family)

▲ ▼  rosette stage

▲   young plant starting upright growth

▲   mature plant

▲  stem leaves on mature plant

▲ ▼  inflorescences and seed

▲  flowers and seed

·         Tall lettuce: (mentioned on p. 161, Weeds of the Great Plains; not in Weeds of the Northeast)

o   very similar to annual blue lettuce in growth habit; also a winter/summer annual

o   leaves end in a narrow, tapering point (arrow-like)

o   flowers tiny, yellow to orange in terminal inflorescences

o   has tan to orange milky sap

o   leaves not spiny on midvein underneath, as with prickly lettuce

o   native to Missouri; found in open woods, roadsides; not usually a serious weed problem