Oxalis pes – caprae L.

Scientific description

Scientific name: Oxalis pes-caprae L.

Kingdom: Plantae | Clade: Tracheophytes, Angiosperms, Eudicots, Rosids | Order: Oxalidales | Family: Oxalidaceae | Genus: Oxalis | Species: O. pes-caprae

Origin: South-African geophyte introduced worldwide as an ornamental plant; now a widespread invasive weed in Mediterranean climates.

Description: Perennial herb, spreading widely, shallow stake-like roots forming small tubers, smooth stem 5–30 cm tall. Leaves compound with 3 heart-shaped leaflets, grey-green, lobed, hairy. Flowers hermaphrodite, lemon-yellow, 6–12 per inflorescence on long hairless pedicel. Fruit rarely formed, brown capsule.

Ecology: Mediterranean climate, mild rainy winters, hot dry summers; temperate, tropical, subtropical climates. Weed in cultivated and uncultivated fields, gardens, wet woodlands, roadsides, rubbish tips. Flowering December–May. Indicator of calcium-deficient soils.

Propagation: Mainly by bulbils, occasionally by seed; spreads rapidly.

Usage: Culinary: small quantities in salads, sauces, herb pies (pleasant sour taste). Leaves and shoots harvested winter/spring; contains potassium oxalate/oxalic acid (toxic in large amounts; cooking reduces toxicity). Apiculture: nectar/pollen source in winter. Medicinal: antiscorbutic, astringent, diuretic, emmenagogue, expectorant, antipyretic, irritant, stomachic. Leaf decoction for fevers and thirst; external poultice for abscesses, wounds, skin conditions, mucous irritation, cosmetic uses.

Creative writing inspired by Oxalis pes – caprae L.

Oxalis pes-caprae L.

Long ago, in a small village near the coast of ancient Greece, there was a young girl named Xinia, known for her radiant smile and joy for life. Her laughter was so infectious that it could lift the spirits of anyone around her. However, Xinia had a secret—though she always appeared cheerful, her heart was heavy with sadness over a lost love.

One day, wandering through the fields to clear her mind, Xinia found a small, delicate plant with clover-like leaves and bright yellow flowers. Intrigued by its beauty, she tasted the leaves and was surprised by the sharp, tangy flavor. The sourness of the plant, however, brought her a strange sense of relief, as if it mirrored the bittersweet feelings in her heart.

Unbeknownst to Xinia, the plant was sacred to Persephone, the goddess of the underworld and of spring. Sensing the girl’s sorrow, Persephone appeared to her, offering comfort. She explained that just as the plant bore both beauty and sourness, life too is a mix of joy and sorrow. She told Xinia that the plant, called "Oxalis," was a reminder that even in hardship, sweetness could be found.

Persephone then gave Xinia a blessing: whenever she felt sadness, the taste of the Oxalis leaves would cleanse her spirit, reminding her that every trial in life would eventually pass, like winter giving way to spring. Xinia spread the plant throughout the village, and soon everyone began to call it "Xinithra," after the girl who found solace in its sour taste.

Over time, Xinithra, or Oxalis pes-caprae, became a symbol of resilience. Though its leaves had a sour flavor, they represented the idea that life’s hardships could be embraced, leading to inner strength and peace. The bright yellow flowers, blooming in winter, reminded people that light could always be found, even in the darkest of times.

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