prickly lettuce

Lactuca serriola

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

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• basal leaves generally 0 at flower
• cauline leaves with narrow, acute, basal lobes clasping stem
• leaves oblanceolate to oblong-elliptic or obovate in outline, margins prickly-toothed, sometimes also coarsely lobed
• inflorescence branches often widely spreading
• fruit body light to dark brown [or pale grayish to tan], rough-hairy, unwinged

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

Locations:

• Joaquin Miller Park, Oakland: 2
• Sibley Volcanic RP: 2
• Monte Bello OSP
• Murray Ranch SP
• Máyyan 'Ooyákma Coyote Ridge OSP
• San Bruno Mountain State & County Park

Months:

• Jun.: 1
• Jul.: 2
• Aug.: 4
• Sep.: 1

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

Bay Area species: iNaturalist – Calflora