Veg. Syst. 10: 24, plate 24, fig. 2. 1765.

Common names: Mountain-sorrel oxyrie
Etymology: Greek oxys, sour, and -aria, possession, alluding to acidic leaves
Treatment appears in FNA Volume 5. Treatment on page 533. Mentioned on page 218, 480.

Herbs, perennial; roots fibrous; rhizomes present or not. Stems erect, glabrous. Leaves deciduous, basal, rarely also cauline, alternate, petiolate; ocrea sometimes deciduous, chartaceous; blade reniform to orbiculate-cordate, margins entire to obscurely wavy. Inflorescences terminal, paniclelike or racemelike, pedunculate. Pedicels present. Flowers bisexual, (1–)3–7 per ocreate fascicle, base stipelike; perianth nonaccrescent, greenish to reddish brown, campanulate, glabrous; tepals 4, in 2 whorls of 2, distinct, sepaloid, dimorphic, outer 2 narrower than inner 2; stamens (2–)6; filaments distinct, free, glabrous; anthers white to red or deep purple, elliptic to ovate; styles 2, spreading, distinct; stigmas penicillate. Achenes exserted, yellowish to tan, winged, lenticular, glabrous. Seeds: embryo straight or curved. x = 7.


Arctic and alpine, n, w North America, Europe, e Asia.


Species ca. 4 (1 in the flora).

Lower Taxa

... more about "Oxyria"
Craig C. Freeman +  and John G. Packer +
Mountain-sorrel +  and oxyrie +
Arctic and alpine +, n +, w North America +, Europe +  and e Asia. +
Greek oxys, sour, and -aria, possession, alluding to acidic leaves +
chrtek1992a +  and mooney1961a +
Polygonaceae subfam. Polygonoideae +