Prickly Lettuce beside the Thames Path

We hadn't realised until a recent local Wildflower' Walk along the Thames Path, that Prickly Lettuce can have both lobed and un-lobed leaves viz.

We had probably seen the different leaves before but without noticing them? 

Unknown to us, people were asked (during 2020) to send mature seeds of both to michaelpw22@hotmail.com who is/was investigating any differences between them.

There are twenty-one plants growing together beside the Thames Path, of which five are lobed.

If we manage to collect seeds we shall ask if he is still interested in receiving some.

PS... we recall seeing lots of Prickly Lettuce growing close to the Lesser Calamint in Lesnes Abbey Park and if it still there, we must see if any plants have lobed leaves.