Difference between revisions of "Horkelia sect. Capitatae"
in N. L. Britton et al., N. Amer. Fl. 22(7): 7. 1959.
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|accepted_name=Horkelia sect. Capitatae | |accepted_name=Horkelia sect. Capitatae | ||
| − | |accepted_authority=(Rydberg) O. Stevens | + | |accepted_authority=(Rydberg) O. Stevens |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in N. L. Britton et al., N. Amer. Fl. | |title=in N. L. Britton et al., N. Amer. Fl. | ||
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|label=Endemic | |label=Endemic | ||
}} | }} | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Capitatae | |name=Capitatae | ||
|authority=Rydberg | |authority=Rydberg | ||
| + | |rank=unranked | ||
| + | |publication_title=Monogr. N. Amer. Potentilleae, | ||
| + | |publication_place=122. 1898 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Potentilla sect. Capitatae | |name=Potentilla sect. Capitatae | ||
|authority=(Rydberg) Crum | |authority=(Rydberg) Crum | ||
| + | |rank=section | ||
}} | }} | ||
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Horkelia;Horkelia sect. Capitatae | |hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Horkelia;Horkelia sect. Capitatae | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Horkelia sect. Capitatae | name=Horkelia sect. Capitatae | ||
| − | + | |authority=(Rydberg) O. Stevens | |
| − | |authority=(Rydberg) O. Stevens | ||
|rank=section | |rank=section | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1959 | |publication year=1959 | ||
|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/V9/V9_410.xml |
|subfamily=Rosaceae subfam. Rosoideae | |subfamily=Rosaceae subfam. Rosoideae | ||
|tribe=Rosaceae tribe Potentilleae | |tribe=Rosaceae tribe Potentilleae | ||
Latest revision as of 22:56, 5 November 2020
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.