Rumex chrysocarpus

Moris

Mem. Reale Accad. Sci. Torino 38: 46. 1835.

Common names: Amamastla dock
Synonyms: Rumex berlandieri Meisner Rumex langloisii Small
Treatment appears in FNA Volume 5. Treatment on page 508. Mentioned on page 493, 507.

Plants perennial, glabrous, with vertical rootstock. Stems ascending or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 40–60 (–80) cm. Leaf-blades deep olive green, with strongly prominent veins abaxially, linear-lanceolate, occasionally lanceolate, 5–12 × 1.5–4 cm, usually ca. 3.5–5 times as long as wide, widest near or below middle, thick, coriaceous, base cuneate or rounded-cuneate, margins entire to crenulate, undulate or crisped, flat, apex subobtuse or broadly acute. Inflorescences terminal and axillary, terminal usually occupying distal 1/3 of stem, lax, interrupted almost to top, usually broadly paniculate (branches simple or nearly so). Pedicels articulated in proximal 1/3 or almost near middle, filiform or slightly thickened, especially distally 3–6 (–7) mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen. Flowers 5–15 in whorls; inner tepals orbiculate, ovate-deltoid, or ovate-triangular, 3.5–4.5 (–5) × 3–4 (–4.5) mm, base truncate or rarely indistinctly cordate, margins entire, apex subacute; tubercles 3, equal or subequal, much narrower than inner tepals, free margins of inner tepals wider than or at least as wide as tubercle, verrucose to subglabrous. Achenes brown or dark reddish-brown, 2.5–3 × 1.5–2 mm. 2n = 20.


Phenology: Flowering spring–summer.
Habitat: Swamps, marshes, shores, wet alluvial forests
Elevation: 0-200 m

Distribution

V5 1041-distribution-map.gif

La., Tex., ne Mexico (Tamaulipas)

Discussion

The name Rumex floridanus was misapplied (in part) to this species by W. D. Trelease (1892) and other North American authors. Rumex chrysocarpus is distinctive and rarely confused with other species of the R. salicifolius aggregate.

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 chrysocarpus"
unwinged +  and weakly winged +
dark reddish-brown;brown +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pyramidal +, compressed-3-gonous +  and 3-gonous +
1.5mm;2mm +
yellow +  and brownish yellow +
ovate +  and elongate +
Sergei L. Mosyakin +
leafy +  and regular +
not articulated +
cordate +, truncate +, rounded-cuneate +  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 +
Amamastla dock +
La. +, Tex. +  and ne Mexico (Tamaulipas) +
0-200 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 +
Swamps, marshes, shores, wet alluvial forests +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
always distinctly wider and longer +
ovate-triangular +, ovate-deltoid +  and orbiculate +
3mm +  and 4mm +
nonmembranous +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
deciduous +
cauline +  and basal +
subglabrous +
verrucose +
entire +  and crenulate undulate or crisped +
smaller +
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 />) +
2+-2.5 times as long as inner tepals +
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–summer. +
(2-)3(-4)-carpellate +
60 cm600 mm <br />0.6 m <br /> (80 cm800 mm <br />0.8 m <br />) +
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Mem. Reale Accad. Sci. Torino +
slender;stout +
not scapose +
decumbent +  and procumbent +
erect +  and ascending +
plumose +  and fimbriate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
distinct +
reflexed;spreading +
Rumex berlandieri +  and Rumex langloisii +
Rumex chrysocarpus +
Rumex sect. Axillares +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
much narrower +
stoloniferous +  and rhizomatous +
10 +, 9 +, 8 +  and 7 +