Oxalis oregana

Nuttall in J. Torrey and A. Gray

Fl. N. Amer. 1: 211. 1838.

Common names: Redwood-sorrel
IllustratedEndemic
Synonyms: Oxalis acetosella subsp. oregana (Nuttall) D. Löve O. oregana var. smalliana (R. Knuth) M. Peck O. oregana var. tracyi Jepson O. smalliana R. Knuth
Treatment appears in FNA Volume 12. Treatment on page 148. Mentioned on page 135, 147.

Herbs perennial, acaulous, rhizomes present, fleshy-thickened, densely scaly, stolons absent, bulbs absent. Leaves basal, clustered at rhizome tips; petiole 5–15 (–21) cm, sparsely to densely villous, hairs rusty; leaflets 3, green, broadly obcordate, 10–30 (–40) mm, lobed 1/5–1/4 length, lobes apically convex, surfaces sparsely villous, oxalate deposits absent. Inflorescences 1-flowered; scapes (6–) 11–25 cm, glabrous or sparsely villous. Flowers heterostylous; sepal apices without tubercles; petals white to deep pink, usually with yellow spot sub-basally and prominent purple veins, (8–) 15–25 mm. Capsules ovoid, 6–8 (–12) mm, glabrate.


Phenology: Flowering Feb–Sep.
Habitat: Douglas fir, mixed fir, cedar-spruce, mixed conifer, and hemlock-maple forests, maple woodlands, alder glens, Gaultheria thickets, stream banks.
Elevation: 10–800(–1000) m.

Distribution

V12 682-distribution-map.jpg

B.C., Calif., Oreg., Wash.

Discussion

Oxalis oregana has sometimes been treated as a disjunct geographical taxon of the European O. acetosella Linnaeus (see comments under 21. O. montana).

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 oregana"
5 cm50 mm <br />0.05 m <br /> (?) +
Guy L. Nesom +
Nuttall in J. Torrey and A. Gray +
subpalmate +  and pinnate +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
taprooted +  and fibrous-rooted +
Redwood-sorrel +
B.C. +, Calif. +, Oreg. +  and Wash. +
10–800(–1000) m. +
heterostylous +
Douglas fir, mixed fir, cedar-spruce, mixed conifer, and hemlock-maple forests, maple woodlands, alder glens, Gaultheria thickets, stream banks. +
axillary +  and terminal +
whorled +  and alternate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lobed +  and obcordate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
orange +  and black +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
yellow spot +, white +  and deep pink +
connate +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
15 cm150 mm <br />0.15 m <br /> (21 cm210 mm <br />0.21 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering Feb–Sep. +
Fl. N. Amer. +
fleshy-thickened +
6 cm60 mm <br />0.06 m <br /> (11 cm110 mm <br />0.11 m <br />) +
villous +  and glabrous +
11 cm110 mm <br />0.11 m <br /> (25 cm250 mm <br />0.25 m <br />) +
connate +  and distinct +
Illustrated +  and Endemic +
free +  and connate +
creeping +  and prostrate +
erect to decumbent +
distinct +
Oxalis acetosella subsp. oregana +, O. oregana var. smalliana +, O. oregana var. tracyi +  and O. smalliana +
Oxalis oregana +
species +