Difference between revisions of "Ivesia gordonii"
in War Department [U.S.], Pacif. Railr. Rep. 6(3): 72. 1858.
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Ivesia gordonii | |accepted_name=Ivesia gordonii | ||
| − | |accepted_authority=(Hooker) Torrey & A. Gray | + | |accepted_authority=(Hooker) Torrey & A. Gray |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in War Department [U.S.], Pacif. Railr. Rep. | |title=in War Department [U.S.], Pacif. Railr. Rep. | ||
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-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution= | + | |distribution=Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.;Wyo. |
|discussion=<p>Varieties 4 (4 in the flora).</p><!-- | |discussion=<p>Varieties 4 (4 in the flora).</p><!-- | ||
--><p><i>Ivesia gordonii</i> is the most widespread species of the genus, occurring from Washington to Montana, south to central California and Colorado. The species can be distinguished from other members of sect. <i>Ivesia</i> by the relatively deep hypanthium, which is about as deep as wide. Four varieties are provisionally recognized here (B. Ertter and J. L. Reveal 2007), with the likelihood that future work may indicate additional and/or alternate circumscriptions. Populations that are difficult to assign to a variety can be found where the recognizable taxonomic units come together, for example, in northeastern Utah and western Wyoming, involving <i></i>var.<i> gordonii</i> and <i></i>var.<i> wasatchensis</i>, and in California and central Idaho where <i></i>var.<i> alpicola</i> and <i></i>var.<i> ursinorum</i> tend to merge.</p> | --><p><i>Ivesia gordonii</i> is the most widespread species of the genus, occurring from Washington to Montana, south to central California and Colorado. The species can be distinguished from other members of sect. <i>Ivesia</i> by the relatively deep hypanthium, which is about as deep as wide. Four varieties are provisionally recognized here (B. Ertter and J. L. Reveal 2007), with the likelihood that future work may indicate additional and/or alternate circumscriptions. Populations that are difficult to assign to a variety can be found where the recognizable taxonomic units come together, for example, in northeastern Utah and western Wyoming, involving <i></i>var.<i> gordonii</i> and <i></i>var.<i> wasatchensis</i>, and in California and central Idaho where <i></i>var.<i> alpicola</i> and <i></i>var.<i> ursinorum</i> tend to merge.</p> | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Ivesia gordonii | name=Ivesia gordonii | ||
| − | |authority=(Hooker) Torrey & A. Gray | + | |authority=(Hooker) Torrey & A. Gray |
|rank=species | |rank=species | ||
|parent rank=section | |parent rank=section | ||
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|basionyms=Horkelia gordonii | |basionyms=Horkelia gordonii | ||
|family=Rosaceae | |family=Rosaceae | ||
| − | |distribution= | + | |distribution=Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.;Wyo. |
|reference=None | |reference=None | ||
|publication title=in War Department [U.S.], Pacif. Railr. Rep. | |publication title=in War Department [U.S.], Pacif. Railr. Rep. | ||
|publication year=1858 | |publication year=1858 | ||
|special status=Endemic;Illustrated | |special status=Endemic;Illustrated | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_357.xml |
|subfamily=Rosaceae subfam. Rosoideae | |subfamily=Rosaceae subfam. Rosoideae | ||
|tribe=Rosaceae tribe Potentilleae | |tribe=Rosaceae tribe Potentilleae | ||
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| − | -->[[Category:Treatment]][[Category:Ivesia sect. Ivesia]] | + | --> |
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| + | [[Category:Treatment]] | ||
| + | [[Category:Ivesia sect. Ivesia]] | ||
| + | [[Category:Revised Since Print]] | ||
Latest revision as of 18:09, 6 November 2020
Plants green, ± tufted, sometimes rosetted; taproot stout, not fleshy. Stems prostrate to erect, (0.2–)0.5–4 dm. Basal leaves tightly to loosely cylindric, (1–)3–20(–25) cm; sheathing base ± glandular abaxially, otherwise glabrous; petiole 0.5–8 cm, hairs 0.2–0.5 mm; leaflets (6–)10–25 per side, (1–)2–13(–18) mm, glabrous or ± hirsute or villous, glandular-puberulent or -pubescent, lobes (2–)4–8(–15), linear or narrowly oblanceolate to obovate, apex rarely setose. Cauline leaves 1(–2), not paired. Inflorescences 5–50(–70)-flowered, 1–8(–11) cm diam.; glomerules 1–several. Pedicels 1–3(–5) mm. Flowers 5–12 mm diam.; epicalyx bractlets linear to narrowly elliptic, (0.5–)1–3.5(–4) mm; hypanthium turbinate to campanulate, (1.5–)2–4(–4.5) × 2–4(–5) mm; sepals (2–)2.5–5(–6) mm, obtuse to ± acute; petals yellow, narrowly oblanceolate to narrowly spatulate, (1–)1.5–3 mm; stamens 5, filaments 1.3–2.5 mm, anthers yellow, sometimes red-margined, 0.5–1 mm; carpels (1–)2–4(–6), styles 2.5–4.5(–6) mm. Achenes grayish brown to mottled brown, ± 2 mm.
Distribution
Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
Discussion
Varieties 4 (4 in the flora).
Ivesia gordonii is the most widespread species of the genus, occurring from Washington to Montana, south to central California and Colorado. The species can be distinguished from other members of sect. Ivesia by the relatively deep hypanthium, which is about as deep as wide. Four varieties are provisionally recognized here (B. Ertter and J. L. Reveal 2007), with the likelihood that future work may indicate additional and/or alternate circumscriptions. Populations that are difficult to assign to a variety can be found where the recognizable taxonomic units come together, for example, in northeastern Utah and western Wyoming, involving var. gordonii and var. wasatchensis, and in California and central Idaho where var. alpicola and var. ursinorum tend to merge.
Selected References
None.
Lower Taxa
Key
| 1 | Leaflets 7–13(–18) mm, glabrous or sparsely hirsute or villous marginally; stems (1–)1.5–4 dm; inflorescences usually branched, 2–8(–11) cm diam., glomerules (1–)2–6(–10), ± capitate. | Ivesia gordonii var. wasatchensis |
| 1 | Leaflets (1–)2–7(–9) mm, hairy or ± glabrous except marginally ciliate; stems (0.2–)0.5–2.5 dm; inflorescences simple or branched, 1–3(–5) cm diam., glomerules 1(–3), ± capitate to loosely congested | > 2 |
| 2 | Stems usually prostrate to ascending, rarely nearly erect, usually dark reddish, minutely glandular or glandular-puberulent to -pubescent; leaves to 0.8 cm diam.; anthers usually red-margined. | Ivesia gordonii var. ursinorum |
| 2 | Stems usually ascending to erect, sometimes decumbent, usually greenish, rarely reddish, hirsute to villous, glandular-puberulent to -pubescent; leaves to 1.5 cm diam.; anthers rarely red-margined | > 3 |
| 3 | Stems usually hirsute to villous, sometimes densely so, glandular-pubescent or eglandular; basal leaves (3–)5–10(–15) cm; flowers 7–12 mm diam.; e Idaho and w Montana to Utah, Wyoming, and w Colorado. | Ivesia gordonii var. gordonii |
| 3 | Stems not or sparsely hirsute to villous, glandular-puberulent or -pubescent; basal leaves 2–8(–10) cm; flowers 5–9 mm diam.; s Washington to California and e to w Montana. | Ivesia gordonii var. alpicola |