Oxalis suksdorfii

Trelease

Mem. Boston Soc. Nat. Hist. 4: 89. 1888.

Common names: Western yellow wood-sorrel
Endemic
Synonyms: Xanthoxalis suksdorfii (Trelease) Small
Treatment appears in FNA Volume 12. Treatment on page 145. Mentioned on page 137.
Revision as of 20:10, 27 May 2020 by imported>Volume Importer

Herbs perennial, caulescent, rhizomes present long, stolons absent, bulbs absent. Aerial stems 1(–3) from base, mostly erect, 10–25 cm, herbaceous, sparsely to moderately villous, hairs nonseptate and usually septate. Leaves cauline; stipules rudimentary; petiole (2–)3–5(–6) cm, hairs septate and nonseptate; leaflets 3, green, obcordate, (8–)10–16(–20) mm, lobed 1/5–1/3 length, margins green, surfaces glabrous to sparsely strigose, oxalate deposits absent. Inflorescences umbelliform cymes, 1–3-flowered; peduncles (2–)4–8(–10) cm. Flowers tristylous, above level of leaves; sepal apices without tubercles; petals yellow, 12–20 mm. Capsules oblong-cylindric, 10–15 mm, densely puberulent. 2n = 24.


Phenology: Flowering May–Aug.
Habitat: Open woods, fir, Douglas fir-oak woodlands, dry shrublands, roadsides, disturbed areas.
Elevation: 0–700 m.

Distribution

V12 541-distribution-map.jpg

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

Discussion

Selected References

None.

Lower Taxa

None.