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Oxalis L., Sp. Pl. 433. 1753. Gen. Pl. ed. 5. 198. 1754; Edgew. and Hk. f. in Hk. f. Fl. Brit. Ind. 1 : 435. 1874.
Mostly bulbous herbs with acidic juice. Aerial stem reduced, creeping or rhizomatous. Leaves digitately compound, showing sleep movements. Flowers regular. Stamens monadelphous at the base; filaments 5 long and 5 short, alternating with one another. Ovary 5 locular with one or more ovules in each locule. Often heterostylous (in some European species). Fruit capsular. Seeds with an elastic testa.
A large genus with about 800 species. Mostly found in North and South America, South Africa and fairly well represented in Europe and Asia.
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| 1 |
Stem elongated; rhizomatous or creeping and lying above the ground. Leaves radical. Bulbils absent |
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(2) |
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Stem reduced; not a rhizome or a creeper. Leaves basal. bulbils present |
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Oxalis acetosella |
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| 2 (1) |
Rhizome scaly. Flowers white to pale pink, 10-14 mm long. Seeds longitudinally ribbed |
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(1) |
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Creepers pubescent. Flowers yellow, 6-7 mm long. Seeds transversely ribbed |
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Oxalis corniculata |
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| 3 |
Peduncle 1 flowered. Flowers pink with yellow throat |
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Oxalis variabilis |
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Peduncle 2-many flowered Flowers yellow |
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(4) |
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| 4 (3) |
Flowers yellow. Longer filaments glabrous |
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Oxalis pes-caprae |
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Flowers pink. Longer filaments strigose |
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(5) |
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| 5 (4) |
Leaflets obcordate. Pedicel hairy. Longer filaments c. 4.5 mm long |
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Oxalis corymbosa |
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Leaflets triangular. Pedicel glabrous. Longer filaments 3 mm long |
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Oxalis latifolia |
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Lower Taxa
Related Synonym(s):
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Treatments in Other Floras @ www.efloras.org
Other Databases
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