Oxalis articulata |
Oxalis decaphylla |
|
---|---|---|
pink oxalis, pink sorrell, windowbox wood-sorrel |
ten-leaf wood-sorrel |
|
Habit | Herbs perennial, acaulous, rhizomes present, thick, woody, irregularly nodulate-segmented, often covered with persistent petiole bases, stolons absent, bulbs absent. | Herbs perennial, acaulous, rhizomes and stolons absent, bulbs solitary or clustered; bulb scales 9–15+-nerved. |
Leaves | 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. |
basal, rarely absent at flowering; petiole 7–32(–46) cm; leaflets (3–)5–11, green to purplish abaxially, green adaxially, sometimes with purplish transverse medial band, narrowly oblong-oblanceolate to narrowly oblong or linear, (10–)12–38(–72) mm, lobed (1/6–)1/2–2/3(–9/10) length, lobes apically subacute, surfaces glabrous, oxalate deposits absent. |
Inflorescences | usually umbelliform cymes, less commonly in irregular cymes, 3–12-flowered; scapes 12–28 cm, sparsely strigose. |
umbelliform cymes, (2–)6–11(–15)-flowered; scapes 7–35 cm, glabrous. |
Flowers | heterostylous; sepal apices with 2 orange tubercles; petals usually purplish rose to red, rarely white, 10–14 mm. |
distylous; sepal apices with 2 orange, linear, thick tubercles; petals green proximally, rose purple or lavender to pink, rarely white, distally, with green veins, (7–)9–17(–22) mm. |
Capsules | ovoid, 4–8 mm, sparsely strigose. |
ellipsoid, 3–11 mm, glabrous. |
2n | = 42. |
= 28, 56. |
Oxalis articulata |
Oxalis decaphylla |
|
Phenology | Flowering Mar–Jul. | Flowering Jun–Aug. |
Habitat | Disturbed places, especially near gardens, lawns, fields, roadsides. | Sycamore-walnut, oak, pine-oak, ponderosa pine, pine-spruce-aspen, or spruce-fir woodlands, canyons, meadows, seeps, streamsides. |
Elevation | 0–250 m. (0–800 ft.) | (1700–)2200–3000(–3200) m. ((5600–)7200–9800(–10500) ft.) |
Distribution |
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]
|
AZ; NM; n Mexico; c Mexico
|
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. 153. | FNA vol. 12, p. 149. |
Parent taxa | Oxalidaceae > Oxalis | Oxalidaceae > Oxalis |
Sibling taxa | ||
Synonyms | O. articulata subsp. rubra, O. rubra | O. grayi |
Name authority | Savigny: in J. Lamarck et al., Encycl. 4: 686. (1798) | Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 5(fol. & qto.): plate 468. (1822) |
Web links |