Jepson eFlora
Key to families | Table of families and genera

Key to Oxalis

View taxon page for Oxalis

1. Petals yellow to yellow-orange, drying ± red or not

2. Annual; fruit < 5 mm ..... O. micrantha

2' Perennial herb; fruit >= 6 mm or 0

3. Leaves in loose, ± basal rosette; bulbs present ..... O. pes-caprae

3' Leaves cauline; bulbs 0

4. Petals 12–20 mm; North Coast ..... O. suksdorfii

4' Petals 5–12 mm; North Coast, elsewhere

5. Petals generally < 8 mm; taproot fibrous; stem rooting at nodes ..... O. corniculata

5' Petals generally 8–12 mm; taproot ± woody; stem not rooting at nodes (sometimes rooting at nodes in O. pilosa)

6. Hairs generally sparse, appressed or arched upward; pedicels > 2 × fruit ..... O. californica

6' Hairs dense, generally spreading; pedicels < 2 × fruit ..... O. pilosa

1' Petals white to pink, red, purple-rose, or purple

7. Bulbs 0

8. Rhizome woody, not creeping; disturbed places ..... O. articulata subsp. rubra

8' Rhizome fleshy, creeping; ± undisturbed forests

9. Flowers 1 ..... O. oregana

9' Flowers 3–9 in umbel-like cyme ..... O. trilliifolia

7' Bulbs present

10. Stem elongate ..... O. incarnata

10' Stem ± 0

11. Flowers in umbel-like cyme ..... [O. bowiei]

11' Flowers 1 ..... [O. purpurea]

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Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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