About fourteen inches high.
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Looking up Lactuca serriola on the internet, I am finding plants with jagged edged leaves. Do these develop with age . . . ?
Blog - Loose and Leafy - http://looseandleafy.blogspot.com/
The lower leaves might be "pinnatifid", according to Rose. The leaves are usually smooth-edged on the specimens I see around here. For example, this iSpot observation:
Maybe there are different subspecies or forms? On the other hand, it's not wise to assume that plant or invertebrate identifications on the web are always right.
There are 2 varieties:- serriola and integrifolia which has unlobed leaves.
Aha, thanks. I will watch out for serriola.
Lat/Lng: 50.7, -2.0
OS grid ref: SZ0090