Rumex venosus


Fl. Amer. Sept. 2: 733. 1813.

Common names: Veined or veiny dock wild-begonia rumex veine
Treatment appears in FNA Volume 5. Treatment on page 505. Mentioned on page 491.

Plants perennial, glabrous or nearly so, with creeping rhizomes. Stems ascending or, rarely, erect, usually producing axillary shoots near base, (10–)15–30(–40) cm. Leaf blades ovate-elliptic, obovate-elliptic, or ovate-lanceolate, (2–)4–12(–15) × 1–5(–6) cm, subcoriaceous, base narrowly to broadly cuneate, margins entire, flat or slightly undulate, apex acute or acuminate. Inflorescences terminal and axillary, usually occupying distal 2/3 of stem/shoot, usually dense, or interrupted in proximal part, broadly paniculate. Pedicels articulated near middle, filiform or slightly thickened, (8–)10–16 mm, articulation distinct, slightly swollen. Flowers 5–15 in whorls; inner tepals distinctly double-reticulately veined, orbiculate or reniform-orbiculate, 13–18(–20) × (20–)23–30 mm, base deeply emarginate or cordate, margins entire, apex rounded, obtuse, rarely subacute, with short, broadly triangular tip; tubercles absent, occasionally very small. Achenes brown or dark brown, 5–7 × 4–6 mm. 2n = 40.

Phenology: Flowering spring–early summer.
Habitat: Sand dunes, sandy and gravelly riverbanks and slopes, deserts, grasslands 200-1500 m


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Alta., Man., Sask., Ariz., Calif., Colo., Idaho, Iowa, Kans., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wis., Wyo.


Rumex venosus is a distinctive species rarely confused with any other members of the genus. However, I have seen herbarium specimens of it misidentified as R. hymenosepalus, and vice versa.

Selected References


Lower Taxa

... more about "Rumex venosus"
Sergei L. Mosyakin +
Veined or veiny dock +, wild-begonia +  and rumex veine +
Alta. +, Man. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Iowa +, Kans. +, Minn. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Okla. +, Oreg. +, S.Dak. +, Tex. +, Utah +, Wash. +, Wis. +  and Wyo. +
Sand dunes, sandy and gravelly riverbanks and slopes, deserts, grasslands 200-1500 m +
Flowering spring–early summer. +
Fl. Amer. Sept. +
Weedy +, Illustrated +  and Endemic +
Undefined subg. Lapathum +, Rumex sect. Lapathum +  and Rumex subg. Lapathum +
Rumex venosus +
Rumex sect. Axillares +
species +