Difference between revisions of "Eriogonum acaule"
Proc. Acad. Nat. Sci. Philadelphia 4: 13. 1848.
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|name=Eriogonum caespitosum subsp. acaule | |name=Eriogonum caespitosum subsp. acaule | ||
|authority=(Nuttall) S. Stokes | |authority=(Nuttall) S. Stokes | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Eriogonum caespitosum var. acaule | |name=Eriogonum caespitosum var. acaule | ||
|authority=(Nuttall) R. J. Davis | |authority=(Nuttall) R. J. Davis | ||
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|elevation=2000-2500 m | |elevation=2000-2500 m | ||
|distribution=Colo.;Wyo. | |distribution=Colo.;Wyo. | ||
| − | |discussion=<p>Eriogonum acaule is the ultimate reduction in the E. brevicaule complex. The low, matted habit of this rather elegant species makes it attractive to rock garden enthusiasts. In Colorado, the Bureau of Land Management considers it a “sensitive” species; it is known only from Moffat County. It is encountered more frequently in Wyoming, where it is found in Albany, Carbon, Fremont, Lincoln, Natrona, Sublette, Sweetwater, Teton, and Uinta counties. The species is to be expected just south of the Daggett County line in northeastern Utah.</p> | + | |discussion=<p><i>Eriogonum acaule</i> is the ultimate reduction in the <i>E. brevicaule</i> complex. The low, matted habit of this rather elegant species makes it attractive to rock garden enthusiasts. In Colorado, the Bureau of Land Management considers it a “sensitive” species; it is known only from Moffat County. It is encountered more frequently in Wyoming, where it is found in Albany, Carbon, Fremont, Lincoln, Natrona, Sublette, Sweetwater, Teton, and Uinta counties. The species is to be expected just south of the Daggett County line in northeastern Utah.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1848 | |publication year=1848 | ||
|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/V5/V5_514.xml |
|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
Revision as of 18:39, 18 September 2019
Herbs, matted, not scapose, 0.15–0.3 × 1–2 dm, tomentose, greenish. Stems matted, with persistent leaf bases, up to 1/8 height of plant; caudex stems matted; aerial flowering stems erect, slender, solid, not fistulose, 0.05–0.2 dm, tomentose. Leaves sheathing entire stem, 1 per node or fasciculate; petiole 0.05–0.15 cm, glabrous; blade linear to oblanceolate, 0.3–0.8 × 0.1–0.2 cm, densely white-tomentose on both surfaces, margins revolute. Inflorescences cymose or racemose, condensed, 0.2–0.5(–0.8) × 0.3–0.8 cm; branches dichotomous or secondaries suppressed, tomentose; bracts absent. Peduncles absent. Involucres 1 per node, campanulate, 1.5–3 × 1.5–3 mm, tomentose; teeth 4–5, erect to slightly spreading, 1–2 mm. Flowers 2–2.5 mm; perianth yellow, white-tomentose abaxially; tepals connate proximal 1/4, monomorphic, lanceolate; stamens exserted, 2.5–3 mm; filaments pilose proximally. Achenes light brown, 2–2.5 mm, sparsely pubescent.
Phenology: Flowering May–Jul.
Habitat: Gravelly or clayey flats and slopes, saltbush or sagebrush communities
Elevation: 2000-2500 m
Discussion
Eriogonum acaule is the ultimate reduction in the E. brevicaule complex. The low, matted habit of this rather elegant species makes it attractive to rock garden enthusiasts. In Colorado, the Bureau of Land Management considers it a “sensitive” species; it is known only from Moffat County. It is encountered more frequently in Wyoming, where it is found in Albany, Carbon, Fremont, Lincoln, Natrona, Sublette, Sweetwater, Teton, and Uinta counties. The species is to be expected just south of the Daggett County line in northeastern Utah.
Selected References
None.