Difference between revisions of "Potentilla sect. Brevifoliae"
in N. L. Britton et al., N. Amer. Fl. 22(7): 11. 1959.
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|distribution=nw United States;n Mexico. | |distribution=nw United States;n Mexico. | ||
|discussion=<p>Species 3 (1 in the flora).</p><!-- | |discussion=<p>Species 3 (1 in the flora).</p><!-- | ||
| − | --><p>Section Brevifoliae is primarily based on Potentilla brevifolia, distinctive in its abundant short-septate glands and the three to seven overlapping, more or less flabellate leaflets, most often in a subpinnate arrangement. Two Mexican species, P. macdonaldii B. L. Turner and P. richardii Lehmann, are included provisionally in the section. The rounded membranous stipules suggest a close relationship with sect. Aureae, especially P. cristae, which is also abundantly glandular.</p> | + | --><p><i>Section</i> Brevifoliae is primarily based on <i>Potentilla brevifolia</i>, distinctive in its abundant short-septate glands and the three to seven overlapping, more or less flabellate leaflets, most often in a subpinnate arrangement. Two Mexican species, P. macdonaldii B. L. Turner and P. richardii Lehmann, are included provisionally in the section. The rounded membranous stipules suggest a close relationship with sect. Aureae, especially <i>P. cristae</i>, which is also abundantly glandular.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1959 | |publication year=1959 | ||
|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/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_281.xml |
|subfamily=Rosaceae subfam. Rosoideae | |subfamily=Rosaceae subfam. Rosoideae | ||
|tribe=Rosaceae tribe Potentilleae | |tribe=Rosaceae tribe Potentilleae | ||
Revision as of 18:15, 18 September 2019
Perennials, tufted to openly matted, not stoloniferous; taproots not fleshy-thickened; vestiture of sparse long hairs, or eglandular hairs absent, glands common to abundant, red. Stems ± erect, not flagelliform, not rooting at nodes, arising laterally to persistent basal rosettes, (0.2–)0.5–1.5(–2.5) dm, lengths 1.5–3(–4) times basal leaves. Leaves: basal not in ranks; cauline 0–2; primary leaves ± pinnate to subpinnate (distal leaflets ± distinct), rarely ternate, 2–7 cm; petiole: long hairs absent or spreading, weak, glands common to abundant; leaflets (3–)5–7, on distal 1/4 or less of leaf axis, usually overlapping, ± flabellate, margins flat, ± whole length unevenly incised 1/2 to nearly to midvein into 3+ lobes these in turn incised 1/4–1/2 to midvein, primary teeth of each lobe usually 2–3, often secondarily toothed, surfaces similar, green, not glaucous, long hairs (if present) weak, cottony hairs absent. Inflorescences (1–)3–10-flowered, ± cymose, open, or solitary flowers. Pedicels straight in fruit, 0.1–1 cm, proximal not much longer than distal. Flowers 5-merous; hypanthium 2.5–4.5 mm diam.; petals yellow, ± obcordate, 3.5–6.5 mm, longer than sepals, apex retuse; stamens ca. 20; styles subapical, filiform, ± papillate-swollen at very base, if at all, 1.4–2 mm. Achenes smooth.
Distribution
nw United States, n Mexico.
Discussion
Species 3 (1 in the flora).
Section Brevifoliae is primarily based on Potentilla brevifolia, distinctive in its abundant short-septate glands and the three to seven overlapping, more or less flabellate leaflets, most often in a subpinnate arrangement. Two Mexican species, P. macdonaldii B. L. Turner and P. richardii Lehmann, are included provisionally in the section. The rounded membranous stipules suggest a close relationship with sect. Aureae, especially P. cristae, which is also abundantly glandular.
Selected References
None.