Rumex mexicanus
Rumex chrysocarpus
Mexican dock, Mexican willow, Mexican willow or dock
Amamastla, Amamastla dock
erect or ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60(–90) cm.
ascending or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 40–60(–80) cm.
blades light green to yellowish green, linear-lanceolate, occasionally lanceolate, 6–14 × 1–3.5(–4) cm, usually ca. 5–7 times as long as wide, widest near middle, thin, not coriaceous, base cuneate, margins entire, flat or undulate, apex acute or attenuate.
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.
terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense or interrupted in proximal 1/2, usually broadly paniculate (branches simple or with few 2d-order branches).
terminal and axillary, terminal usually occupying distal 1/3 of stem, lax, interrupted almost to top, usually broadly paniculate (branches simple or nearly so).
articulated in proximal 1/3 or almost near base, filiform (thickened distally), 4–7 mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen.
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.
10–20 in whorls;
inner tepals broadly ovate-triangular, occasionally broadly triangular, 3.5–4.5(–5) × 3.5–4(–5) mm, base truncate or indistinctly cordate, margins entire or indistinctly erose, apex obtuse or subacute;
tubercles 3, equal or subequal (much narrower than inner tepals).
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.
brown or dark reddish brown, 2–3 × 1.5–2 mm.
brown or dark reddish brown, 2.5–3 × 1.5–2 mm.
= 40.
= 20.
Rumex mexicanus
Rumex chrysocarpus
Some authors recognize Rumex mexicanus in the broad sense, including in it many other taxa treated here as separate entities. For consistency, the entities of the R. salicifolius aggregate that are recognized herein are kept separate pending additional taxonomic research.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
LA Plants
