Rumex californicus

Rechinger f.

Repert. Spec. Nov. Regni Veg. 40: 297. 1936.

Common names: California willow dock
Illustrated
Synonyms: Rumex salicifolius var. denticulatus Torrey
Treatment appears in FNA Volume 5. Treatment on page 509. Mentioned on page 492, 510, 516.

Plants perennial, glabrous, with vertical rootstock. Stems usually ascending, rarely decumbent-ascending or suberect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60 cm. Leaf-blades linear-lanceolate or linear-oblanceolate, 5–10 × 1–3 cm, usually ca. (3–) 5–7 times as long as wide, usually widest near middle, thin or, occasionally, subcoriaceous, base cuneate, margins entire, flat or, occasionally, undulate near base, apex acute or attenuate. Inflorescences terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, lax, interrupted at least in proximal 1/2, usually broadly paniculate (branches simple or with few 2d-order branches). Pedicels articulated in proximal 1/3 or almost near base, filiform, 3–8 mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen. Flowers 10–15 (–20) in whorls; inner tepals usually broadly triangular or deltoid, 2.5–3.5 × 2.2–3.3 mm, base truncate, margins minutely but distinctly denticulate, rarely subentire, apex obtuse or subacute; tubercles absent, or only 1 midvein slightly swollen. Achenes brown or dark reddish-brown, 2 × 1.3 mm. 2n = 20.


Phenology: Flowering late spring–summer.
Habitat: Moist coastal, alluvial, and montane habitats
Elevation: 0-3000 m

Distribution

V5 1043-distribution-map.gif

Ariz., Calif., Nev., Oreg., possibly n Mexico

Discussion

Rumex californicus is closely related to and often is regarded as a variety of R. salicifolius.

In Oregon this species has been reported only as a ballast waif in the Albina neighborhood of Portland (K. H. Rechinger 1937). It has been reported also from northeastern Nevada (J. T. Kartesz 1987, vol. 1), New Mexico (W. C. Martin and C. R. Hutchins 1980), and Wyoming (N. M. Sarkar 1958), but these records require confirmation.

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 californicus"
unwinged +  and weakly winged +
dark reddish-brown;brown +
2 cm20 mm <br />0.02 m <br /> (?) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
Rechinger f. +
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 +
California willow dock +
Ariz. +, Calif. +, Nev. +, Oreg. +  and possibly n Mexico +
0-3000 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 +
Moist coastal, alluvial, and montane habitats +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
always distinctly wider and longer +
deltoid +  and triangular +
2.2mm +  and 3.3mm +
nonmembranous +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
deciduous +
cauline +  and basal +
pubescent +  and glabrous +
subentire +, denticulate +  and undulate +
smaller +
narrower +
swollen +
partly +  and foliaceous +
deciduous +  and persistent +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
2+-2.5 times as long as inner tepals +
accrescent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering late spring–summer. +
(2-)3(-4)-carpellate +
30 cm300 mm <br />0.3 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Repert. Spec. Nov. Regni Veg. +
slender;stout +
Illustrated +
not scapose +
decumbent +  and procumbent +
suberect +, decumbent-ascending +  and ascending +
1/5 +  and 1/3 +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Rumex salicifolius var. denticulatus +
Rumex californicus +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +