Difference between revisions of "Rumex hymenosepalus"
in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 177. 1859.
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|name=Rumex arizonicus | |name=Rumex arizonicus | ||
|authority=Britton | |authority=Britton | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Rumex hymenosepalus var. salinus | |name=Rumex hymenosepalus var. salinus | ||
|authority=(A. Nelson) Rechinger f. | |authority=(A. Nelson) Rechinger f. | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Rumex salinus | |name=Rumex salinus | ||
|authority=Kellogg | |authority=Kellogg | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Rumex saxei | |name=Rumex saxei | ||
− | |authority= | + | |authority= |
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Rumex;Rumex subg. Rumex;Rumex sect. Rumex;Rumex hymenosepalus | |hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Rumex;Rumex subg. Rumex;Rumex sect. Rumex;Rumex hymenosepalus | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Rumex hymenosepalus | name=Rumex hymenosepalus | ||
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|authority=Torrey in W. H. Emory | |authority=Torrey in W. H. Emory | ||
|rank=species | |rank=species | ||
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|publication year=1859 | |publication year=1859 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_1056.xml |
|subfamily=Polygonaceae subfam. Polygonoideae | |subfamily=Polygonaceae subfam. Polygonoideae | ||
|genus=Rumex | |genus=Rumex |
Revision as of 22:49, 16 December 2019
Plants perennial, glabrous or indistinctly papillose-pubescent, with distinctly tuberous roots and short rhizomes. Stems usually erect, rarely ascending, branched above middle, 25–90(–100) cm. Leaves: ocrea prominent and persistent at maturity, whitish or silvery white, membranous; blade oblong, oblong-elliptic, or obovate-lanceolate, (5–)8–30 × 2–8(–12) cm, base cuneate or narrowly cuneate, margins entire, flat or indistinctly crisped, apex acute or acuminate, rarely obtuse. Inflorescences terminal, occupying distal 1/2 of stem, narrowly paniculate, rarely simple. Pedicels articulated near middle or in proximal 1/3, filiform, 5–15(–20) mm, articulation indistinct. Flowers 5–20 in whorls; inner tepals oblong-cordate or orbiculate-cordate, 11–16 × 9.5–14 mm, base sinuate or emarginate, margins entire, rarely with few extremely small denticles at base, apex obtuse or subacute; tubercles absent. Achenes brown or reddish brown, 4–5(–7) × 2.5–4.5(–5) mm. 2n = 40.
Phenology: Flowering spring.
Habitat: Sandy and rocky places: plains, slopes, stream beds, alkaline soils
Elevation: 0-1700(-2000) m
Distribution
![V5 1056-distribution-map.gif](/w/images/5/56/V5_1056-distribution-map.gif)
Ariz., Calif., Colo., Mont., Nev., N.Mex., Okla., Tex., Utah, Wyo., Mexico (Baja California, Chihuahua).
Discussion
Rumex hymenosepalus is the only species of subsect. Hymenosepali Rechinger f.
Two varieties have been recognized. The typical variety has achenes 5 mm and ovate-elliptic or oblong-cordate inner tepals with a subacute apex. Variety salinus (A. Nelson) Rechinger f. has larger achenes (to 7 mm) and almost orbiculate inner tepals with an obtuse apex.
Rumex hymenosepalus was reported also from Montana (J. E. Dawson 1979), but no exact localities were given.
Selected References
None.