rosilla

Helenium puberulum

Member of sneezeweeds (genus Helenium)
sunflower family (family Asteraceae)
dicots (class Magnoliopsida)
yellow in flowering plants

stem winged by decurrent leaf bases
300–500 disk flowers, 1.9–2.7 mm
13–15 rays (ocassionally 0), 3.8–10 mm
very common

Per Merriam-Webster, the name is pronounced in an English way, “rozilla” or “rosilla”, or in a Spanish way, “roseeya”.

Chris’s observations: 20 (19 are research grade)

Locations:

El Corte de Madera OSP: 3
Sweeney Ridge National Recreation Area: 3
Mt. Madonna SP: 2
San Bruno Mountain State & County Park: 2
San Pedro Valley CP: 2
Sibley Volcanic RP: 2
Coal Creek OSP
Golden Gate National Recreation Area
Mt. Diablo SP
Murray Ranch SP
Sam McDonald CP
Thornewood OSP

Months:

Jun.: 2
Jul.: 7
Aug.: 6
Sep.: 2
Oct.: 1
Nov.: 2

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

Bay Area species: iNaturalist – Calflora