The largest populations are short-styled sterile pentaploids (5n = 35) there are also small populations of fertile tetraploids (4n = 28) with all 3 style-lengths. Oxalis pes-caprae (buttercup oxalis, Bermuda buttercup, yellow oxalis) is a low-growing perennial (family Oxalidaceae) found along the coast of California, in the Coastal Ranges, and in the Sacramento Valley. Grows in gardens and orchards, along roadsides and arable land.Ĭontinual consumption by sheep involves chronic kidney damage and may result in death.Ģ chromosome races occur here. Some aspects of the ecology and physiology of soursob (Oxalis pes-caprae). The latter play an important part in dispersal. Natural barriers to further spread are low rainfall in April-Nov., low winter temperature with several frosts a year, infertile soils and absence of rivers. pes-caprae is a native of South Africa, now more widely distributed in other regions with Mediterranean climates in Europe, North Africa, USA, Australia and New Zealand. Useful descriptions are given by Peirce (1997), and Parsons and Cuthbertson (1992). 229.įield distribution is only extensive in the SL and NL regions. pes-caprae is a yellow-flowered, bulbous perennial with trifoliate leaves. (1982) Plants of western New South Wales, p.
Flora of South Australia (4th edn).Ĭunningham et al. 8 mm long, the upper part pubescent rarely plants with double sterile flowers. Peduncles to 40 cm, with 3-25 flowers in an umbel sepals lanceolate, 5-7 mm long, with simple and glandular hairs, usually with 2 calli at the apex, rarely with dark spots at the top and the base petals yellow, 15-25 mm long capsule c. 14 (1781).Ĭommon name: Soursob, soursop, Bermuda buttercup.īulbs ovoid, 2-3 cm long, pointed tunics brown bulbils formed on the rhizome and in the axils of the basal leaves stem hardly exserted, only developed when the plants are crowded or shaded leaves numerous petioles 5-20 cm, with a few hairs, broadened at the base leaflets 3, cuneate-obcordate, 1-3 cm long, 1-4 cm broad, with a deep incision, glabrous above, sparsely hairy below, often with purple flecks on the upper-surface. They are propagated from seed sown in spring or by division in late winter.Synonymy: O.
They are resistant plants to the usual pests and diseases. They do not need pruning but their expansion must be controlled because they tend to be invasive. After flowering, irrigation is reduced and in winter there is no need to water.įertilize the substrate with organic matter before planting. Water frequently, without flooding, so that the substrate is always wet. The soil must be well drained and contain plenty of organic matter. The winter temperature should not be lower than 6 ✬. Plants spread rapidly when in a suitable environment and can quite easily become a weed in virtually frost-free environments. The flowers, leaves and bulbs are all edible, being gathered from the wild and consumed locally.
OXALIS PES CAPRAE FULL
Oxalis pes-caprae can grow in full sun or semi-shade exposure. Oxalis pes-caprae is a perennial plant growing about 20cm tall and spreading rapidly to form large carpets of growth. They are used in light undergrowth, in flower beds, in rockeries and in pots and planters. The showy yellow flowers, single or double, appear in groups of 3-8 specimens above the leaves. The leaves, trifoliate and bright green, have a long petiole. Some of the most common names for the plant reference its sour. Oxalis cernua is a less common synonym for this species. They are small herbaceous plants with a covering habit that reach 10 cm in height (30 cm when they bloom). Type-Protologue: Locality: Habitat in Aethiopia: Distribution: Ethiopia. Oxalis pes-caprae (African wood-sorrel, Bermuda buttercup, Bermuda sorrel, buttercup oxalis, Cape sorrel, English weed, goats-foot, sourgrass, soursob or soursop Afrikaans: suring) is a species of tristylous yellow-flowering plant in the wood sorrel family Oxalidaceae. Some species are: Oxalis pes-caprae, Oxalis gigantea, Oxalis flava, Oxalis corniculata, Oxalis bowiei, Oxalis articulata, Oxalis triangularis, Oxalis purpurea, Oxalis acetosella, Oxalis rosea.Ĭommon names: Bermuda buttercup, African wood-sorrel, Cape sorrel, English weed, Soursop. The genus Oxalis, family Oxalidaceae, comprises 600 species of herbaceous plants native to temperate and warm regions of almost all continents. Care of the plant Oxalis pes-caprae or Bermuda buttercup
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