Rumex sibiricus

Hultén

Kongl. Svenska Vetensk. Acad. Handl., ser. 3, 5(2): 48. 1928.

Common names: Siberian or Siberian willow dock
Synonyms: Rumex salicifolius var. angustifolius Meisner
Treatment appears in FNA Volume 5. Treatment on page 513. Mentioned on page 493, 509, 510, 512.

Plants perennial, glabrous, with vertical rootstock. Stems usually ascending, occasionally erect, usually producing axillary shoots below 1st-order inflorescence, especially at proximal nodes, 15–40 (–70) cm. Leaf-blades linear-lanceolate or narrowly linear-lanceolate, 6–15 × 1–2 (–2.5) mm, usually ca. 6–10 times as long as wide, widest near middle, thin, not coriaceous, base cuneate, margins entire, flat or undulate, apex acute. Inflorescences terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense or occasionally interrupted in proximal 1/2, usually broadly paniculate (branches simple or with few 2d-order branches). Pedicels articulated in proximal 1/3, filiform (but thickened distally), 1.5–3.5 (–4) mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen. Flowers 10–20 (–25) in whorls; inner tepals ovate or occasionally ovatelanceolate, 2.5–3 (–3.5) × 1.6–2.5 mm, base broadly cuneate or truncate, margins entire or indistinctly erose, apex obtuse or subacute; tubercles 3, equal or subequal, usually distinctly narrower and much shorter than inner tepals, smooth or weakly rugose. Achenes dark-brown, occasionally dark reddish-brown, 2–2.5 × 1–1.2 mm. 2n = 20.


Phenology: Flowering late spring–summer.
Habitat: Sandy, gravelly, and clayey shores of rivers and streams, wet rocky and grassy slopes
Elevation: 0-1500 m

Distribution

V5 1051-distribution-map.gif

N.W.T., Yukon, Alaska, Asia (n Russian Far East including Kamchatka), Asia (Siberia)

Discussion

Rumex hultenii Tzvelev, a species closely related to R. sibiricus (it differs from the latter mostly by inner tepals without tubercles), was reported from Alaska by N. N. Tzvelev (1987b, 1989b). Rumex hultenii is reported to differ from R. utahensis by its narrower leaves, and from R. subarcticus by its smaller inner tepals and erect or ascending (not prostrate) habit, as well as by smaller inner tepals. Records of R. utahensis from Alaska may refer to R. hultenii. I have seen no reliable specimens from North America of R. hultenii and cannot confirm that it occurs in Alaska.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.No values specified.

... more about "Rumex sibiricus"
unwinged +  and weakly winged +
dark reddish-brown;dark-brown +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
1mm;1.2mm +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
Hultén +
leafy +  and regular +
not articulated +
cuneate +
crisped;undulate;flat;crisped;undulate;flat +
foliaceous +  and perfoliate +
scale-like +
tuberculate +
just below the soil surface or and above the soil surface +  and spreading +
Siberian or Siberian willow dock +
N.W.T. +, Yukon +, Alaska +, Asia (n Russian Far East including Kamchatka) +  and Asia (Siberia) +
0-1500 m +
free +  and distinct +
unisexual +, bisexual +  and , +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy, gravelly, and clayey shores of rivers and streams, wet rocky and grassy slopes +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
always distinctly wider and longer +
ovatelanceolate +  and ovate +
1.6mm +  and 2.5mm +
nonmembranous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not coriaceous +
deciduous +
cauline +  and basal +
erose +  and entire +
pubescent +  and glabrous +
undulate +, flat +  and entire +
smaller +
narrower +
swollen +
partly +  and foliaceous +
deciduous +  and persistent +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2+-2.5 times as long as inner tepals +
accrescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering late spring–summer. +
(2-)3(-4)-carpellate +
Kongl. Svenska Vetensk. Acad. Handl., ser. +
slender;stout +
not scapose +
decumbent +  and procumbent +
erect +  and ascending +
1/5 +  and 1/3 +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Rumex salicifolius var. angustifolius +
Rumex sibiricus +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
rugose +  and smooth +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +