Oxalis suksdorfii |
Oxalis articulata |
|
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Suksdorf woodsorrel, Suksdorf's oxalis, Suksdorf's wood-sorrel, western yellow oxalis, western yellow wood-sorrel |
pink oxalis, pink sorrell, windowbox wood-sorrel |
|
Habit | Herbs perennial, caulescent, rhizomes present long, stolons absent, bulbs absent. | Herbs perennial, acaulous, rhizomes present, thick, woody, irregularly nodulate-segmented, often covered with persistent petiole bases, 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. |
basal; petiole 11–30 cm; leaflets 3, green to purplish abaxially, green adaxially, rounded-obcordate, 18–20 mm, margins densely loosely ciliate, lobed 1/5–1/3 length, lobes apically convex, surfaces evenly strigose-villous to strigose-hirsute, oxalate deposits in dots concentrated mostly toward margins or over whole surface. |
Inflorescences | umbelliform cymes, 1–3-flowered; peduncles (2–)4–8(–10) cm. |
usually umbelliform cymes, less commonly in irregular cymes, 3–12-flowered; scapes 12–28 cm, sparsely strigose. |
Flowers | tristylous, above level of leaves; sepal apices without tubercles; petals yellow, 12–20 mm. |
heterostylous; sepal apices with 2 orange tubercles; petals usually purplish rose to red, rarely white, 10–14 mm. |
Capsules | oblong-cylindric, 10–15 mm, densely puberulent. |
ovoid, 4–8 mm, sparsely strigose. |
2n | = 24. |
= 42. |
Oxalis suksdorfii |
Oxalis articulata |
|
Phenology | Flowering May–Aug. | Flowering Mar–Jul. |
Habitat | Open woods, fir, Douglas fir-oak woodlands, dry shrublands, roadsides, disturbed areas. | Disturbed places, especially near gardens, lawns, fields, roadsides. |
Elevation | 0–700 m. (0–2300 ft.) | 0–250 m. (0–800 ft.) |
Distribution |
CA; OR; WA; BC
|
AL; AR; CA; FL; GA; LA; MS; NC; OK; OR; SC; TX; VA; South America (Argentina, Brazil, Uruguay) [Introduced in North America; introduced also in Europe, Pacific Islands (New Zealand), Australia]
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Discussion | Oxalis articulata in the United States commonly has been identified as O. rubra. Oxalis rubra was treated at subspecific rank by A. Lourteig (1982), but subsp. articulata and subsp. rubra have essentially the same native range and occur in similar habitats. Lourteig identified both subspecies in the United States, noting in her key that vestiture is reduced and the sepals are broader in subsp. rubra. Evidence is weak for recognizing more than a single entity. In the Flora of Panama (Lourteig 1980), she recognized only O. articulata, noting that it is naturalized in other parts of America and in the Old World. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 12, p. 145. | FNA vol. 12, p. 153. |
Parent taxa | Oxalidaceae > Oxalis | Oxalidaceae > Oxalis |
Sibling taxa | ||
Synonyms | Xanthoxalis suksdorfii | O. articulata subsp. rubra, O. rubra |
Name authority | Trelease: Mem. Boston Soc. Nat. Hist. 4: 89. (1888) | Savigny: in J. Lamarck et al., Encycl. 4: 686. (1798) |
Web links |