Oxalis laxa

Hooker & Arnott

Bot. Beechey Voy., 13. 1830.

Common names: Dwarf wood-sorrel
Introduced
Synonyms: Oxalis corniculata var. sericea R. Knuth O. micrantha Bertero ex Savi O. radicosa A. Richard O. simulans Baker
Treatment appears in FNA Volume 12. Treatment on page 145. Mentioned on page 136, 146.

Herbs annual, caulescent, sometimes densely cespitose, rhizomes and stolons absent, bulbs absent. Aerial stems 1–5 from base, erect, 0.5–7 cm, usually herbaceous, sometimes becoming ± woody proximally, hirtellous to villous-hirtellous. Leaves cauline; stipules rudimentary; petiole 1.5–6 cm; leaflets 3, green, obcordate, 5–12 mm, lobed 1/5 length, lobes apically convex, surfaces glabrous, oxalate deposits absent. Inflorescences racemes, 6–14-flowered; peduncles 3–15 cm. Flowers heterostylous; sepal apices without tubercles; petals yellow, 6–12 mm. Capsules ovoid to spheric, 3–5 mm, puberulent.


Phenology: Flowering Apr–Jun.
Habitat: Disturbed sites, riparian woodlands, riverbanks, gravelly beaches, rock crevices, foothill woodlands.
Elevation: 10–800 m.

Distribution

V12 773-distribution-map.jpg

Introduced; Calif., South America (Chile)

Discussion

Oxalis laxa is widespread in California in the eastern part of the Central Valley and along the central coast.

Selected References

None.

Lower Taxa

None.

"alternating" is not a number."/5" is not declared as a valid unit of measurement for this property.

... more about "Oxalis laxa"
5 cm50 mm <br />0.05 m <br /> (?) +
Guy L. Nesom +
Hooker & Arnott +
subpalmate +  and pinnate +
ovoid +  and spheric +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
taprooted +  and fibrous-rooted +
Dwarf wood-sorrel +
Calif. +  and South America (Chile) +
10–800 m. +
heterostylous +
Disturbed sites, riparian woodlands, riverbanks, gravelly beaches, rock crevices, foothill woodlands. +
axillary +  and terminal +
whorled +  and alternate +
lobed +  and obcordate +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
orange +  and black +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
connate +  and distinct +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Apr–Jun. +
Bot. Beechey Voy., +
connate +  and distinct +
Introduced +
free +  and connate +
creeping +  and prostrate +
hirtellous +  and villous-hirtellous +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
distinct +
Oxalis corniculata var. sericea +, O. micrantha +, O. radicosa +  and O. simulans +
Oxalis laxa +
species +
herb +  and cespitose +