woodsorrels
genus Oxalis
Member of
woodsorrel family (family Oxalidaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)
Except for extremely rare examples that I don't expect to encounter, there are no other wild species of this genus in the bay area.
purple or pale flowers
Key features:
pale pink-sorrel
Oxalis incarnata
- stem: erect, branched, < 30 cm, glabrous; axils often with bulblets
- leaf: cauline, in whorl-like clusters of < 10, lower opposite or not
- petiole 2–7 cm
- leaflets < 1.5 cm
- inflorescence: peduncle < 7 cm; bracts 2, near middle
- sepals < 6 mm, oblong, acute, tips with 2 orange tubercles [?]
- petals < 2 cm, white to pale pink
- Edgewood, near Santa Cruz, near Oakland/Berkeley
Key features:
creeping woodsorrel
Oxalis corniculata
- stem rooting at nodes, < 50 cm, hairs appressed to spreading
- leaf cauline; petiole < 7 cm
- leaflets < 2 cm, ciliate, hairs generally 0 adaxially, sparse, appressed abaxially
- inflorescence: cyme, ± umbel-like or not, 2–7-flowered; pedicel < 1 cm, hairs appressed
- sepals < 4.5 mm, linear to narrowly ovate
- petals generally < 8 mm, oblong to spoon-shaped, yellow, sometimes with red spots below middle
hairy woodsorrel
Oxalis pilosa
- stem erect to decumbent, < 40 cm, rooting at nodes or not, hairs 0.7–1.2 mm, dense, generally spreading
- leaves cauline
- leaflets < 1.5 cm, appressed-hairy
- inflorescence: 1–3-flowered; pedicel < 2 cm, hairs dense, generally spreading, occasionally appressed
- sepals 3.5–6 mm, lanceolate, tips ciliate
- petals generally 8–12 mm, yellow
Toxicity of fire fern, lady's sorrel, oxalis, sorrel, shamrock (Oxalis spp.):
2b – These plants contain oxalate crystals but they do not cause immediate problems. These plants have tiny crystals that lodge in the kidneys and can cause kidney damage as well as nausea, vomiting and diarrhea.
5 observed taxons / 2 unobserved taxons / 1 key
Chris’s observations: 96 (87 are research grade)
Locations:
- El Corte de Madera OSP: 9
- Fremont Older OSP: 9
- Purisima Creek Redwoods OSP: 7
- Alum Rock Park, San Jose: 5
- Butano SP: 5
- Edgewood County Park & Natural Preserve: 5
- Mt. Madonna SP: 4
- Russian Ridge OSP: 4
- Waterdog Lake & Open Space: 4
- Big Basin SP: 3
- Nisene Marks SP: 3
- Sam McDonald CP: 3
- Wilder Ranch SP: 3
- Dry Creek Pioneer RP: 2
- Pescadero Creek CP: 2
- Pleasanton Ridge RP: 2
- Sierra Azul; OSP: 2
- Sweeney Ridge National Recreation Area: 2
- Almaden Quicksilver CP
- Bear Creek Redwoods OSP
- Coyote Hills RP
- Coyote Lake / Harvey Bear Ranch CP
- Crystal Springs Regional Trail
- DeLaveaga Park, Santa Cruz
- Dimond Canyon Trail, Oakland
- Fort Ord NM
- Garrapata SP
- Guadalupe River Trail
- Henry Cowell Redwoods SP
- Huddart CP
- Lake Chabot RP
- Portola Redwoods SP
- San Pedro Valley CP
- Sanborn CP
- Santa Clara Central Park
- Santa Teresa CP
- Sibley Volcanic RP
- Stevens Creek CP
- Windy Hill OSP
- Wunderlich CP
Months:
- Jan.: 6
- Feb.: 15
- Mar.: 24
- Apr.: 10
- May: 12
- Jun.: 9
- Jul.: 9
- Aug.: 7
- Sep.: 4
For more details, use advanced search.
Taxon info:
iNaturalist
–
Calflora
–
Jepson eFlora
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FNA
Bay Area species:
iNaturalist
–
Calflora
