Jepson Herbarium
		University of California, Berkeley

Directory       News       Site Map       Home

Indexes to all accepted names and synonyms: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Annual, perennial herb [ vine, shrub, tree].
Leaf: compound ( palmate [ pinnate, or leaflet 1]), alternate, often ± basal in rosettes or at stem or rhizome tips in clusters, generally petioled, stipules generally 0, leaflets generally sessile.
Inflorescence: cyme, umbel- or raceme-like or not, or flowers 1, generally in axils; peduncle bracted.
Flower: generally bisexual, radial; sepals 5, free or fused at base; petals 5, free or fused above base; stamens 10[15], fused below, of 2 lengths; pistil 1, ovary superior, chambers [3]5, placentas axile, styles [1]5, generally ± free.
Fruit: generally capsule, loculicidal.
Seed: generally arilled.
5 genera, number of species uncertain: especially temperate. [Matthews & Endress 2003 Bot J Linn Soc 140:321–381] Often heterostylous. —Scientific Editor: Thomas J. Rosatti.

Roots fibrous or woody; bulbs, tubers, or rhizomes often present.
Stem: ± 0 or not.
Leaf: stipules 0 or small; leaflets 3, generally ± obcordate [not], generally entire, generally green.
Flower: petals clawed; styles erect or curved.
Fruit: cylindric to spheric, explosively dehiscent.
Seed: flat, often ridged; aril translucent.
500–950 species: especially temperate. (Greek: sour, from acidic taste) [Lourteig 2000 Bradea 7:201–629] Taxonomy difficult, needs study; generally heterostylous; many (especially aliens in CA except Oxalis micrantha) ornamental; some noxious weeds; oxalates may be TOXIC to livestock; Oxalis latifolia Kunth possibly naturalized in CCo (Keil 30389, just n of San Simeon), differs from Oxalis purpurea in having flowers in umbel-like cyme; Oxalis hirta L. an historical waif (no recent collections), excluded.
Unabridged references: [Eiten 1963 Amer Midl Naturalist 69:257–309; Lourteig 1975 Phytologia 42:57–1979; Turner 1994 Phytologia 77:1–7]

Perennial; rhizome slender; bulbs < 2 cm, pale brown, beaked.
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: flowers 1; peduncle < 7 cm; bracts 2, near middle.
Flower: sepals < 6 mm, oblong, acute, tips with 2 orange tubercles; petals < 2 cm, white to pale pink.
Fruit: 0 in CA.
Shady woodland; < 400 m. North Coast, San Francisco Bay Area;

Previous taxon: Oxalis corniculata
Next taxon: Oxalis micrantha

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
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].

Copyright © 2012 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.

Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.