Oxalis drummondii |
Oxalis articulata |
|
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Drummond's wood-sorrel |
pink oxalis, pink sorrell, windowbox wood-sorrel |
|
Habit | Herbs perennial, acaulous, rhizomes and stolons absent, bulb solitary; bulb scales 3-nerved, margins villous-ciliate on distal 1/3–1/2. | Herbs perennial, acaulous, rhizomes present, thick, woody, irregularly nodulate-segmented, often covered with persistent petiole bases, stolons absent, bulbs absent. |
Leaves | basal; petiole 5–16 cm; leaflets 3, green, sometimes with red splotches in irregular medial band adaxially, obtriangular to obcordate, (6–)14–34 mm, lobed 1/4–4/5 length, lobes apically convex to nearly truncate, surfaces glabrous, 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, 3–10-flowered; scapes (7–)11–23 cm, glabrous. |
usually umbelliform cymes, less commonly in irregular cymes, 3–12-flowered; scapes 12–28 cm, sparsely strigose. |
Flowers | distylous or rarely homostylous; sepal apices with 2(–6) orange, linear, thickened, apically confluent tubercles; petals white to pale green proximally with green veins, pink to violet or purple-violet distally, (8–)15–23 mm. |
heterostylous; sepal apices with 2 orange tubercles; petals usually purplish rose to red, rarely white, 10–14 mm. |
Capsules | cylindric, 4–12 mm, hairy. |
ovoid, 4–8 mm, sparsely strigose. |
2n | = 14. |
= 42. |
Oxalis drummondii |
Oxalis articulata |
|
Phenology | Flowering Mar–Nov. | Flowering Mar–Jul. |
Habitat | Sandy-gravelly soils, limestone soils, disturbed areas, prairies, limestone hills, open woodlands, chaparral. | Disturbed places, especially near gardens, lawns, fields, roadsides. |
Elevation | 20–300 m. (100–1000 ft.) | 0–250 m. (0–800 ft.) |
Distribution |
TX; Mexico (Coahuila, Nuevo León, San Luis Potosí, Tamaulipas)
|
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 drummondii is found in the flora area in central and southern Texas. Reports of this species from Arizona, New Mexico, and trans-Pecos Texas are based on misidentifications of O. latifolia and O. metcalfei. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. 149. | FNA vol. 12, p. 153. |
Parent taxa | Oxalidaceae > Oxalis | Oxalidaceae > Oxalis |
Sibling taxa | ||
Synonyms | O. vespertilionis, O. amplifolia | O. articulata subsp. rubra, O. rubra |
Name authority | A. Gray: Smithsonian Contr. Knowl. 5(6): 25. (1853) | Savigny: in J. Lamarck et al., Encycl. 4: 686. (1798) |
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