Rumex ellipticus

Greene

Pittonia 4: 234. 1901.

Common names: Elliptic tall dock
Endemic
Synonyms: Rumex altissimus subsp. ellipticus (Greene) Á. Löve
Treatment appears in FNA Volume 5. Treatment on page 508. Mentioned on page 492.

Plants perennial, glabrous, with vertical rootstock. Stems ascending or decumbent, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 40–70 cm. Leaf-blades lanceolate or broadly lanceolate, 5–10 (–15) × 2–3 (–4) cm, usually ca. 3–4 times as long as wide, widest in proximal 1/2, rarely near middle, thick, often subcoriaceous, base cuneate, margins entire, flat, apex acute or attenuate. Inflorescences terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense or interrupted in proximal 1/2, usually narrowly paniculate (branches simple and comparatively short). Pedicels articulated in proximal 1/2 almost near base, thickish, 3–6 (–7) mm, usually approximately as long as or slightly shorter than inner tepals, articulation indistinctly swollen. Flowers 12–20 in whorls; inner tepals ovate or cordate-triangular, occasionally almost orbiculate, 5–6 × 4–5 mm, base truncate or indistinctly cordate, margins entire, apex obtuse or subacute; tubercles absent or 1 inner tepal with indistinctly swollen midvein. Achenes brown, 2.7–3.2 × 1.8–2.5 mm. 2n = 20.


Phenology: Flowering spring–early summer.
Habitat: Sandy, gravelly, and muddy shores of rivers and streams
Elevation: 10-1000 m

Discussion

Rumex ellipticus is closely related to R. altissimus and is sometimes regarded as a subspecies of it (Á. Löve 1986).

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 ellipticus"
unwinged +  and weakly winged +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
1.8mm;2.5mm +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
Greene +
leafy +  and regular +
not articulated +
cordate +, truncate +  and 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 +
Elliptic tall dock +
Ariz. +, N.Mex. +  and Tex. +
10-1000 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 muddy shores of rivers and streams +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
always distinctly wider and longer +
orbiculate +, cordate-triangular +  and ovate +
4mm +  and 5mm +
nonmembranous +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subcoriaceous +
deciduous +
cauline +  and basal +
pubescent +  and glabrous +
entire +, orbiculate +  and linear +
smaller +
narrower +
swollen +
partly +  and foliaceous +
deciduous +  and persistent +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
accrescent +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering spring–early summer. +
(2-)3(-4)-carpellate +
40 cm400 mm <br />0.4 m <br /> (70 cm700 mm <br />0.7 m <br />) +
slender;stout +
not scapose +
decumbent +  and procumbent +
decumbent +  and ascending +
1/5 +  and 1/3 +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Rumex altissimus subsp. ellipticus +
Rumex ellipticus +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +