bitter lettuce

Lactuca virosa

Member of wild lettuces (genus Lactuca)
lettuce, chicory, dandelion, and salsify tribe (tribe Cichorieae)
sunflower family (family Asteraceae)
dicots (class Magnoliopsida)
yellow in flowering plants

basal rosette leaves toothed or shallowly lobed
distal cauline leaves sessile, widely clasping
proximal cauline leaves wing-petioled
fruit body dark, wing-margined [not hairy?]

Chris’s observations: 8 (5 are research grade)

Locations:

Windy Hill OSP: 2
Dr. Aurelia Reinhardt Redwood RP
Golden Gate National Recreation Area
Murray Ranch SP
Russian Ridge OSP
Sanborn CP
Sibley Volcanic RP

Months:

Jun.: 2
Jul.: 1
Aug.: 2
Sep.: 1
Oct.: 0
Nov.: 0
Dec.: 2

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Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora