Difference between revisions of "Erigeron allocotus"
J. Wash. Acad. Sci. 27: 379. 1937.
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|common_names=Bighorn fleabane | |common_names=Bighorn fleabane | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=E | ||
+ | |label=Endemic | ||
+ | }} | ||
|basionyms= | |basionyms= | ||
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name=Erigeron allocotus | name=Erigeron allocotus | ||
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|authority=S. F. Blake | |authority=S. F. Blake | ||
|rank=species | |rank=species | ||
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|publication title=J. Wash. Acad. Sci. | |publication title=J. Wash. Acad. Sci. | ||
|publication year=1937 | |publication year=1937 | ||
− | |special status= | + | |special status=Endemic |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_641.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron |
Latest revision as of 21:04, 5 November 2020
Perennials, 10–18 cm; taprooted, caudices multicipital or branched. Stems erect to ascending (branched, brittle), hispido-hirsute (hairs brittle), minutely glandular. Leaves basal (often not persistent) and cauline; blades spatulate 15–30 × 1.5–4 mm, cauline gradually reduced distally (reduced to bracts on peduncles), margins usually 3-lobed (lobes linear to oblong-oblanceolate, about as wide as central portion of blades), sometimes 2-ternate or (cauline) entire, faces sparsely hispido-hirsute, minutely glandular. Heads usually 2–4. Involucres 4–5 × 6–9 mm. Phyllaries in 2–3 series, glabrous or sometimes sparsely hispid, densely minutely glandular. Ray florets 20–40; corollas white to bluish, sometimes drying pink, 3–6 mm, laminae not coiling or reflexing. Disc corollas 2.5–3.5 mm. Cypselae 2–2.3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 12–20 bristles.
Phenology: Flowering May–Aug.
Habitat: Dry, calcareous sites on cliff faces, ledges, talus slopes, ridgetops, rock outcrops, barren redbeds, sometimes with Utah juniper, mountain mahogany, or sagebrush
Elevation: 1300–2300 m
Discussion
The brittle, hispid vestiture, and multiple small heads (more than one per stem) with short rays of Erigeron allocotus are unusual among its putative relatives with 3-parted leaves.
Selected References
None.