Wild Lettuce West of the Cascade Mountains of Oregon and Washington
The Genus Lactuca
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Close-up views of the dandylion like flower head of prickly lettuce. The flower heads tend to measure about 1 cm across and consist entirely of ray flowers. Note the tiled arrangement of the involucral bracts. The lower photo shows a close-up of the upper leaf surface of prickly lettuce. Note the somewhat glauous cast to the leaves and the numerous marginal prickles along the irregular lateral lobes. All photos taken alongside Roads K1000 and K1110 to the east of the Mt. Adams Highway.........August 17, 2007.
Tall Blue Lettuce, Wild Blue Lettuce: Lactuca biennis (Synonym: Sonchus biennis) -
Canada Lettuce, Canadian Wild Lettuce, Florida Blue Lettuce, Tall Blue Lettuce: Lactuca canadensis -
Wall Lettuce, Wall-lettuce: Lactuca muralis (Synonym: Mycelis muralis) -
Least Lettuce, Willow Lettuce: Lactuca saligna -
Garden Lettuce: Lactuca sativa -
Prickly Lettuce: Lactuca serriola (Synonym: Lactuca scariola, Lactuca scariola var. integrata, Lactuca scariola var. scariola) -
Great Lettuce, Tall Lettuce, Wild Lettuce: Lactuca virosa -
