Difference between revisions of "Rumex subarcticus"
Naturaliste Canad. 82: 191. 1955.
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|common_names=Subarctic or subarctic willow dock | |common_names=Subarctic or subarctic willow dock | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Rumex pallidus subsp. subarcticus | |name=Rumex pallidus subsp. subarcticus | ||
|authority=(Lepage) Á. Löve | |authority=(Lepage) Á. Löve | ||
| + | |rank=subspecies | ||
}} | }} | ||
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Rumex;Rumex subg. Rumex;Rumex sect. Axillares;Rumex subarcticus | |hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Rumex;Rumex subg. Rumex;Rumex sect. Axillares;Rumex subarcticus | ||
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|elevation=0-200 m | |elevation=0-200 m | ||
|distribution=Nunavut.;Que. | |distribution=Nunavut.;Que. | ||
| − | |discussion=<p>Some specimens of Rumex subarcticus have well-developed tubercles similar to those of R. pallidus (N. M. Sarkar 1958), to which it is closely related and of which it may be regarded as a northwestern subspecies or variety (see Á. Löve 1986).</p> | + | |discussion=<p>Some specimens of <i>Rumex subarcticus</i> have well-developed tubercles similar to those of <i>R. pallidus</i> (N. M. Sarkar 1958), to which it is closely related and of which it may be regarded as a northwestern subspecies or variety (see Á. Löve 1986).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Rumex subarcticus | name=Rumex subarcticus | ||
| − | |||
|authority=Lepage | |authority=Lepage | ||
|rank=species | |rank=species | ||
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|publication title=Naturaliste Canad. | |publication title=Naturaliste Canad. | ||
|publication year=1955 | |publication year=1955 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_1052.xml |
|subfamily=Polygonaceae subfam. Polygonoideae | |subfamily=Polygonaceae subfam. Polygonoideae | ||
|genus=Rumex | |genus=Rumex | ||
Latest revision as of 23:07, 5 November 2020
Plants perennial, glabrous, with vertical rootstock. Stems usually procumbent, rarely ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60 cm. Leaf blades narrowly linear-lanceolate, 6–17 × 1–3 cm, usually ca. 7–10 times as long as wide, widest near middle, usually thick, not coriaceous or subcoriaceous, base cuneate, margins entire, usually strongly undulate and/or crenulate, apex acute. Inflorescences terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense towards apex, distinctly interrupted in proximal 1/2, usually broadly paniculate (branches almost at right angles to main axis, simple or with few 2d-order branches). Pedicels articulated in proximal 1/3, filiform, 4–7 mm, not more than 2–2.5 times as long as inner tepals, articulation slightly swollen. Flowers 10–20 in whorls; inner tepals, broadly deltoid or deltoid-ovate, 3–4 × 3.2–4(–4.5) mm, base truncate, margins entire or indistinctly crenulate, apex obtuse or subacute; tubercles absent, rarely small and indistinct. Achenes brown or dark reddish brown, 2–3 × 1.5–2 mm. 2n = 20.
Phenology: Flowering early summer.
Habitat: Mostly coastal and alluvial habitats: sea beaches, shores of rivers and streams, wet meadows
Elevation: 0-200 m
Discussion
Some specimens of Rumex subarcticus have well-developed tubercles similar to those of R. pallidus (N. M. Sarkar 1958), to which it is closely related and of which it may be regarded as a northwestern subspecies or variety (see Á. Löve 1986).
Selected References
None.