Madrepora lactuca, Pallas, Zooph.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
Noticed Lactuca exalata and a Rottlera on the road; more snow has fallen on the hills E.N.E.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Lactuca virosa (Strong-scented Lettuce) .
"Handbook to the Severn Valley Railway Illustrative and Descriptive of Places along the Line from Worcester to Shrewsbury" by J. Randall
Lactuca Canadensis, Wild Lettuce.
"Seeds of Michigan Weeds" by W. J. (William James) Beal
Lactuca macrantha, C. B. Cl.
"Mount Everest the Reconnaissance, 1921" by Charles Kenneth Howard-Bury