Difference between revisions of "Horkelia sect. Capitatae"

(Rydberg) O. Stevens in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 22(7): 7. 1959.

Endemic
Basionym: Capitatae Rydberg
Synonyms: Potentilla sect. Capitatae (Rydberg) Crum
Treatment appears in FNA Volume 9. Treatment on page 259. Mentioned on page 248.
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--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>forming tufts or open mats, green or reddish, rarely grayish, conspicuously glandular, resinously aromatic. <b>Stems</b> ascending to erect, (0.6–)1–6(–9) dm. <b>Basal</b> leaves planar; stipules entire; leaflets 3–8(–15) per side, separate, sometimes ± overlapping, divided 1/5–3/4+ to midrib into (3–)5–15 teeth or lobes not restricted to apex. <b>Inflorescences</b> open to ± congested, flowers usually arranged in ± capitate glomerules, arranged individually in H. fusca var. filicoides. <b>Pedicels</b> remaining ± straight, outermost sometimes ± reflexed in congested inflorescences, 1–3(–10) mm. <b>Flowers</b>: epicalyx bractlets linear, 0.2–0.3(–0.5) mm wide, entire; hypanthium interior glabrous; sepals acute to acuminate; petals white to pale pink, often veined with pink to rose, ± oblanceolate to cuneate, apex emarginate to truncate or rounded; filaments white, glabrous, anthers longer than wide; carpels 10–25. <b>Achenes</b> 1–1.8 mm, smooth.</span><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>forming tufts or open mats, green or reddish, rarely grayish, conspicuously glandular, resinously aromatic. <b>Stems</b> ascending to erect, (0.6–)1–6(–9) dm. <b>Basal</b> leaves planar; stipules entire; leaflets 3–8(–15) per side, separate, sometimes ± overlapping, divided 1/5–3/4+ to midrib into (3–)5–15 teeth or lobes not restricted to apex. <b>Inflorescences</b> open to ± congested, flowers usually arranged in ± capitate glomerules, arranged individually in <i>H. fusca </i>var.<i> filicoides</i>. <b>Pedicels</b> remaining ± straight, outermost sometimes ± reflexed in congested inflorescences, 1–3(–10) mm. <b>Flowers</b>: epicalyx bractlets linear, 0.2–0.3(–0.5) mm wide, entire; hypanthium interior glabrous; sepals acute to acuminate; petals white to pale pink, often veined with pink to rose, ± oblanceolate to cuneate, apex emarginate to truncate or rounded; filaments white, glabrous, anthers longer than wide; carpels 10–25. <b>Achenes</b> 1–1.8 mm, smooth.</span><!--
  
 
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|distribution=w United States.
 
|distribution=w United States.
 
|discussion=<p>Species 1.</p><!--
 
|discussion=<p>Species 1.</p><!--
--><p>Rydberg recognized seven species in his group Capitatae, treated here as intergrading variation within a single species. Plants of the section share the characteristic Horkelia odor, glandularity, and planar leaves of sect. Horkelia, but differ in the combination of relatively small, short-pedicelled flowers that (except for var. filicoides) are most commonly aggregated into one or more capitate, purple-suffused glomerules, with linear epicalyx bractlets, oblanceolate-cuneate petals that are often pink-tinged, and relatively short, broad filaments.</p>
+
--><p>Rydberg recognized seven species in his group Capitatae, treated here as intergrading variation within a single species. Plants of the section share the characteristic <i>Horkelia</i> odor, glandularity, and planar leaves of sect. <i>Horkelia</i>, but differ in the combination of relatively small, short-pedicelled flowers that (except for <i></i>var.<i> filicoides</i>) are most commonly aggregated into one or more capitate, purple-suffused glomerules, with linear epicalyx bractlets, oblanceolate-cuneate petals that are often pink-tinged, and relatively short, broad filaments.</p>
 
|tables=
 
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|references=
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|publication year=1959
 
|publication year=1959
 
|special status=Endemic
 
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V9/V9_410.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_410.xml
 
|subfamily=Rosaceae subfam. Rosoideae
 
|subfamily=Rosaceae subfam. Rosoideae
 
|tribe=Rosaceae tribe Potentilleae
 
|tribe=Rosaceae tribe Potentilleae

Revision as of 19:16, 18 September 2019

Plants forming tufts or open mats, green or reddish, rarely grayish, conspicuously glandular, resinously aromatic. Stems ascending to erect, (0.6–)1–6(–9) dm. Basal leaves planar; stipules entire; leaflets 3–8(–15) per side, separate, sometimes ± overlapping, divided 1/5–3/4+ to midrib into (3–)5–15 teeth or lobes not restricted to apex. Inflorescences open to ± congested, flowers usually arranged in ± capitate glomerules, arranged individually in H. fusca var. filicoides. Pedicels remaining ± straight, outermost sometimes ± reflexed in congested inflorescences, 1–3(–10) mm. Flowers: epicalyx bractlets linear, 0.2–0.3(–0.5) mm wide, entire; hypanthium interior glabrous; sepals acute to acuminate; petals white to pale pink, often veined with pink to rose, ± oblanceolate to cuneate, apex emarginate to truncate or rounded; filaments white, glabrous, anthers longer than wide; carpels 10–25. Achenes 1–1.8 mm, smooth.

Distribution

w United States.

Discussion

Species 1.

Rydberg recognized seven species in his group Capitatae, treated here as intergrading variation within a single species. Plants of the section share the characteristic Horkelia odor, glandularity, and planar leaves of sect. Horkelia, but differ in the combination of relatively small, short-pedicelled flowers that (except for var. filicoides) are most commonly aggregated into one or more capitate, purple-suffused glomerules, with linear epicalyx bractlets, oblanceolate-cuneate petals that are often pink-tinged, and relatively short, broad filaments.

Selected References

None.

Lower Taxa