familyRanunculaceae
genusRanunculus
subgenusRanunculus subg. Ranunculus
sectionRanunculus sect. Ranunculus
speciesRanunculus canus
Show Lower Taxa
Difference between revisions of "Ranunculus canus"
Pl. Hartw., 294. 1849.
Endemic
Treatment appears in FNA Volume 3.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>erect to decumbent, never rooting nodally, hirsute, pilose, or glabrous, base not bulbous. <b>Roots</b> never tuberous. <b>Basal</b> leaf blades ovate to narrowly ovate in outline, 3-parted or -foliolate, 3.3-9.5 ×3.5-9.4 cm, leaflets or segments 1-3×-lobed, ultimate segments ovate or oblong-ovate to lanceolate, margins toothed, apex acute or obtuse. <b>Flowers</b>: receptacle glabrous; sepals reflexed 1-2 mm above base, 3-8 × 2-4 mm, hirsute; petals 5-17, yellow, 6-12 × 3-6 mm. <b>Heads</b> of achenes hemispheric to globose, 6-9 × 7-10 mm; achenes 3.4-4.4 × 2.4-3.6 mm, glabrous or rarely hispid, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, deltate or lance-deltate, curved, 0.2-1.2 mm.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
|distribution=Calif. | |distribution=Calif. | ||
|discussion=<p>Varieties 2 (2 in the flora).</p><!-- | |discussion=<p>Varieties 2 (2 in the flora).</p><!-- | ||
| − | --><p>Ranunculus canus intergrades with R. occidentalis var. occidentalis and R. californicus, and some populations can be difficult to assign to species. The deltate or lance-deltate achene beak of R. canus, however, which is usually 0.8-1.2 mm wide at the base and less than 1.5 times as long as wide, contrasts with the narrower beaks of the other two species, which are usually less than 0.6 mm wide and at least twice as long as wide.</p> | + | --><p><i>Ranunculus canus</i> intergrades with <i>R. occidentalis </i>var.<i> occidentalis</i> and <i>R. californicus</i>, and some populations can be difficult to assign to species. The deltate or lance-deltate achene beak of <i>R. canus</i>, however, which is usually 0.8-1.2 mm wide at the base and less than 1.5 times as long as wide, contrasts with the narrower beaks of the other two species, which are usually less than 0.6 mm wide and at least twice as long as wide.</p> |
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name=Ranunculus canus | name=Ranunculus canus | ||
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|authority=Bentham | |authority=Bentham | ||
|rank=species | |rank=species | ||
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|publication year=1849 | |publication year=1849 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_534.xml |
|genus=Ranunculus | |genus=Ranunculus | ||
|subgenus=Ranunculus subg. Ranunculus | |subgenus=Ranunculus subg. Ranunculus | ||
|section=Ranunculus sect. Ranunculus | |section=Ranunculus sect. Ranunculus | ||
|species=Ranunculus canus | |species=Ranunculus canus | ||
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Latest revision as of 22:49, 5 November 2020
Stems erect to decumbent, never rooting nodally, hirsute, pilose, or glabrous, base not bulbous. Roots never tuberous. Basal leaf blades ovate to narrowly ovate in outline, 3-parted or -foliolate, 3.3-9.5 ×3.5-9.4 cm, leaflets or segments 1-3×-lobed, ultimate segments ovate or oblong-ovate to lanceolate, margins toothed, apex acute or obtuse. Flowers: receptacle glabrous; sepals reflexed 1-2 mm above base, 3-8 × 2-4 mm, hirsute; petals 5-17, yellow, 6-12 × 3-6 mm. Heads of achenes hemispheric to globose, 6-9 × 7-10 mm; achenes 3.4-4.4 × 2.4-3.6 mm, glabrous or rarely hispid, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, deltate or lance-deltate, curved, 0.2-1.2 mm.
Discussion
Varieties 2 (2 in the flora).
Ranunculus canus intergrades with R. occidentalis var. occidentalis and R. californicus, and some populations can be difficult to assign to species. The deltate or lance-deltate achene beak of R. canus, however, which is usually 0.8-1.2 mm wide at the base and less than 1.5 times as long as wide, contrasts with the narrower beaks of the other two species, which are usually less than 0.6 mm wide and at least twice as long as wide.
Selected References
None.
Key
| 1 | Petals 5–7; Sacramento Valley and adjacent foothills. | Ranunculus canus var. canus |
| 1 | Petals 13–17; Transverse Ranges. | Ranunculus canus var. ludovicianus |