Difference between revisions of "Eriogonum thompsoniae"
Amer. Naturalist 7: 302. 1873.
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|name=Eriogonum corymbosum var. thompsoniae | |name=Eriogonum corymbosum var. thompsoniae | ||
|authority=(S. Watson) S. L. Welsh | |authority=(S. Watson) S. L. Welsh | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum thompsoniae | |hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum thompsoniae | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Eriogonum thompsoniae | name=Eriogonum thompsoniae | ||
| − | |||
|authority=S. Watson | |authority=S. Watson | ||
|rank=species | |rank=species | ||
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|publication year=1873 | |publication year=1873 | ||
|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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_491.xml |
|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
Revision as of 21:54, 16 December 2019
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
w United States.
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 |