genus Horkelia

Member of cinquefoil subtribe (subtribe Potentillinae)
rose family (family Rosaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

There are no other wild species of this genus in the bay area.

wedge leaf horkelia
Horkelia cuneata

wedge leaf horkelia
Horkelia cuneata

leaflets pinnately veined throughout [distinction unclear in CalPhotos]

more than 20 ± evenly spaced teeth arranged in pairs

hypanthium 4–8 mm wide, > 2 × length

california horkelia
Horkelia californica

california horkelia
Horkelia californica

leaflets ± palmately veined at base

teeth unevenly spaced

hypanthium 4–10 mm wide, 1–2 × length

point reyes horkelia
Horkelia marinensis

leaflets ± palmately veined at base

teeth unevenly spaced

stem decumbent to ascending, 10–30 cm long
hypanthium 4–5 mm wide, > 2 × length
inflorescence ± dense
Marin

thin-lobed horkelia
Horkelia tenuiloba

leaflets ± palmately veined at base

teeth unevenly spaced

hypanthium 3–4.5 mm wide, > 2 × length
stem ascending to erect, 10–70 cm long
inflorescence generally ± open
Marin

2 observed taxons / 2 unobserved taxons / 1 key

Chris’s observations: 4 (2 are research grade)

Locations:

Fort Ord NM
Murray Ranch SP
San Bruno Mountain State & County Park
Sweeney Ridge National Recreation Area

Months:

Apr.: 1
May: 0
Jun.: 0
Jul.: 1
Aug.: 2

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Taxon info: iNaturalist – Calflora – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora