Rumex crassus

Rechinger f.

Repert. Spec. Nov. Regni Veg. 40: 295. 1936.

Common names: Fleshy willow dock
Endemic
Treatment appears in FNA Volume 5. Treatment on page 510. Mentioned on page 493.

Plants perennial, glabrous, with vertical rootstock. Stems procumbent, occasionally ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 20–50 (–60) cm. Leaf-blades ovatelanceolate, elliptic-lanceolate, or ovate-elliptic, 3–12 × 1–5 cm, usually not more than 2–3.5 times as long as wide, widest near middle or occasionally in proximal 1/2, thick, coriaceous, base broadly cuneate, occasionally almost truncate or cuneate, margins entire, flat, apex acute. Inflorescences terminal and axillary, terminal usually occupying distal 1/3–1/2 of stem, dense or interrupted only near base, usually broadly paniculate (branches simple or nearly so). Pedicels articulated in proximal 1/3 or almost near base, usually rather thick, 4–9 mm, not more than 2–2.5 times as long as inner tepals, articulation distinctly swollen. Flowers 10–25 in whorls; inner tepals broadly ovate, ovate, or lingulate-deltoid, (3–) 4–5 × (2.5–) 3–4 mm, base rounded or subtruncate, margins entire or indistinctly erose, apex acute or subacute; tubercle 1, large, subequal to inner tepals, or slightly narrower than inner tepals (then free margins of inner tepal distinctly narrower than tubercle), subglabrous to verrucose. Achenes brown or dark reddish-brown, 2–2.5 × 1.7–2.1 mm. 2n = 20.


Phenology: Flowering early spring–summer.
Habitat: Coastal dunes, sandy shores and marshes
Elevation: 0-100 m

Discussion

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 crassus"
unwinged +  and weakly winged +
dark reddish-brown;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 +
1.7mm;2.1mm +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
Rechinger f. +
leafy +  and regular +
not articulated +
rounded +, cuneate +  and truncate +
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 +
Fleshy willow dock +
Calif. +  and Oreg. +
0-100 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 +
Coastal dunes, sandy shores and marshes +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
always distinctly wider and longer +
lingulate-deltoid +  and ovate +
3mm +  and 4mm +
nonmembranous +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
deciduous +
cauline +  and basal +
erose +  and entire +
pubescent +  and glabrous +
entire +, orbiculate +  and linear +
smaller +
narrower +
swollen +
partly +  and foliaceous +
deciduous +  and persistent +
cylindric +
membranous +
anatropous +, , +  and orthotropous +
2+-2.5 times as long as inner tepals +
accrescent +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
campanulate +
accrescent +
fleshy +, indurate +  and membranous +
Flowering early spring–summer. +
(2-)3(-4)-carpellate +
50 cm500 mm <br />0.5 m <br /> (60 cm600 mm <br />0.6 m <br />) +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Repert. Spec. Nov. Regni Veg. +
slender;stout +
not scapose +
1/3 +  and 1/2 +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Undefined subg. Lapathum +, Rumex sect. Lapathum +  and Rumex subg. Lapathum +
Rumex crassus +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
subequal +  and large +
slightly narrower +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +