pes-caprae has within the past two years, started to spread explosively into native dune habitats. Additionally, it may cause oxalate poisoning in livestock if eaten in large quantities.Р В РІР‚СњР В РІР‚С›ndrea Pickart of the Humboldt Bay National Wildlife Refuge in northern California reports that O. It can form dense mats on the ground, outcompeting native plant species for light and space, and also works to inhibit the germination of native species. Oxalis pes-caprae is a garden weed in many regions, and can easily spread throughout a garden into nearby lawn and turfgrass areas. pes-caprae in Australia, and refers to its sour taste.

Soursob is the common name most frequently used for O. Bermuda buttercup is the common name most frequently used in the U.S., and refers to its yellow-flowered appearance and likeness to the buttercup family. The species epithet pes-caprae means goat's foot, perhaps referring to the cloverleaf/cloven shape of the leaves. The genus name Oxalis is derived from Greek meaning sour, referring to the sour-tasting oxalic acid present throughout the plant. and Bolboxalis cernua (Thunb.) Small (USDA, NRCS 2001). pes-caprae has the potential to rapidly spread via the production of bulblets and contaminated soils into adjacent natural areas in California and elsewhere. Due to its extensive occurrence in lawns and gardens, O. It is now reported as invading native coastal dunes in northern California. Ecological Threat Oxalis pes-caprae, although widespread as a garden weed throughout much of California, has never before been observed invading natural areas in North America. pes-caprae generally flowers from late fall to early summer, but fruits and viable seed have not been observed in California.

The yellow petals are clawed, less than 1 in. (7 mm) long, lanceolate to oblong in shape, and the tips often have two orange or yellow tubercles. These inflorescences generally have fewer than 20 flowers each, with peduncles shorter than 11.8 in. pes-caprae are bright yellow and are arranged in umbel-like inflorescences. (3.5 cm) in length and are often spotted with hairy lower surfaces. Foliage The trifoliate (clover-like) leaves arise from an enlarged basal stem tip, and are arranged in a loose basal rosette. in size) is capable of producing over 20 small whitish bulblets each year. pes-caprae arise from a short vertical stem that is attached to a pale brown underground bulb. Overview Appearance Oxalis pes-caprae is a small perennial herb in the Oxalidaceae (Oxalis family), native to the Cape Region of South Africa.