Krause'S Sorrel

Description

Rumex krausei Jurtzev & V. V. Petrovsky, Bot. Zhurn. (Moscow & Leningrad). 58: 1745. 1973. (as krausii). Plants perennial, glabrous, with thick, densely tufted underground stolons. Stems erect or slightly ascending, 1 or several from base, sparsely branched in inflor-escence,occasionally inflorescence simple or nearly so, 8-20(-25) cm; shoots usually densely crowded, not elongated. Leaves: ocrea brownish, membranous; blade narrowly linear or spatulate-lanceolate, not hastate (without basal lobes), 2.5-6 - 0.15-0.3(-0.4) cm, base narrowly cuneate (gradually narrowing into petiole), margins entire, flat or slightly revolute, apex obtuse or subacute. Inflorescences terminal, occupying distal 1/ 2 of stem, usually dense, narrowly paniculate with branches directed upward, or simple. Pedicels 1-4 mm. Flowers 3-7 in whorls; inner tepals distinctly enlarged, 2.3-3 - 1.8-3 mm (free wing 0.4-0.8 mm wide), base cuneate, apex obtuse or subacute. Achenes light brown, 1.5-2 - 1.2-1.9 mm. 2n = 21. Flowering summer. Clay and argillaceous soil, silty sand, rocky outcrops; 0-300 m; of conservation concern; Alaska; ne Asia (ne Russian Far East).