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|Family: Polygonaceae||View Description||Dichotomous Key|
|Genus: Rumex||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Rumex crassus Rech. f.
Habit: Perennial herb, glabrous; taproot vertical. Stem: decumbent to ascending, 2--5(6) dm, generally with axillary shoots below 1° inflorescence. Leaf: blade 3--12 cm, 1--5 cm wide, lance-ovate to -elliptic or ovate-elliptic, thick, leathery, base tapered or truncate, margin entire, flat, tip acute. Inflorescence: axillary, terminal, generally dense, interrupted near base or not, branches generally simple; whorls 10--25-flowered; pedicels 4--9 mm, +- 2 × as long as inner perianth, thick, joints swollen. Flower: inner perianth lobes (3)4--5 mm, (2.5)3--4 mm wide, widely to narrow-ovate to -deltate, base rounded to +- truncate, margin entire to irregularly toothed, tip +- acute; tubercle 1, large, almost as wide as lobe, +- glabrous, warty. Fruit: 2--2.5 mm, 1.7--2.1 mm wide, brown to dark red-brown. Chromosomes: 2n=20.
Ecology: Coastal dunes, sandy shores, marshes; Elevation: < 100 m. Bioregional Distribution: NCo, CCo; Distribution Outside California: Oregon. Flowering Time: Feb--Jul
Synonyms: Rumex salicifolius Weinm. var. crassus (Rech.f.) J.T. Howell
eFlora Treatment Author: Scott Simono
Jepson Online Interchange
Previous taxon: Rumex conglomeratus
Next taxon: Rumex crispus
Citation for this treatment: Scott Simono 2017. Rumex crassus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=42422, accessed on February 25, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 25, 2017.