Difference between revisions of "Eriogonum thompsoniae"
Amer. Naturalist 7: 302. 1873.
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
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| − | |distribution= | + | |distribution=Ariz.;Utah |
|discussion=<p>Varieties 3 (3 in the flora).</p> | |discussion=<p>Varieties 3 (3 in the flora).</p> | ||
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|family=Polygonaceae | |family=Polygonaceae | ||
| − | |distribution= | + | |distribution=Ariz.;Utah |
|reference=None | |reference=None | ||
|publication title=Amer. Naturalist | |publication title=Amer. Naturalist | ||
|publication year=1873 | |publication year=1873 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_491.xml |
|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
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Revision as of 22:11, 5 November 2020
Herbs, spreading, not scapose, 2–5(–6) × 2–5 dm, glabrous, green. Stems spreading, without persistent leaf bases, up to 1/5 height of plant; caudex stems spreading, glabrous; aerial flowering stems erect, slender, solid, not fistulose, 1.2–3 dm, glabrous, tomentose among leaves. Leaves basal or sheathing up stem less than 2 cm, 1 per node; petiole (0.1–)3–7(–10) cm, tomentose to floccose or glabrous; blade linear or oblong to oblanceolate or elliptic, 2–8(–10) × 0.2–2.5(–3) cm, thinly to densely white-tomentose abaxially, glabrous and green adaxially, margins plane or slightly revolute. Inflorescences cymose, open, 10–30 × 10–25 cm; branches dichotomous, glabrous; bracts 3, scalelike, linear, 2–5(–7) mm. Peduncles absent. Involucres 1 per node, turbinate, 2–3(–3.5) × 1–1.5(–2) mm, glabrous; teeth 5, erect, 0.4–0.5 mm. Flowers 3–3.5 mm; perianth yellow or white, glabrous; tepals connate only at base, monomorphic, oblong to obovate; stamens slightly exserted, 3–3.5(–4) mm; filaments sparsely pilose proximally. Achenes light brown to brown, 2.5–3 mm, glabrous except for slightly papillate beak.
Distribution
Ariz., Utah
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Leaf blades linear, 3-8(-10) × 0.2-0.4(-0.6) cm | Eriogonum thompsoniae var. atwoodii |
| 1 | Leaf blades oblong to oblanceolate or elliptic; 2-5 × 0.8-2.5(-3) cm | > 2 |
| 2 | Perianths yellow | Eriogonum thompsoniae var. thompsoniae |
| 2 | Perianths white | Eriogonum thompsoniae var. albiflorum |