Lactuca dolichophylla ?

Lactuca dolichophylla Kitam., Fl. E. Himalaya 1:341. 1966 (Syn: (=) Lactuca longifolia DC.) ?;

Request for ID Hp Flora : Attachments (3). 3 posts by 3 authors.
I saw this plant growing at an altitude of 2100 mtrs. The flowers, as evident from the picture, were not more than 5- 8 mm in diameter. Plz help with the identification.
May be Lactuca sp., perhaps Lactuca longifolia