Difference between revisions of "Erigeron tweedyi"

Canby

Bot. Gaz. 13: 17. 1888.

Common names: Tweedy’s fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 304. Mentioned on page 275.
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|common_names=Tweedy’s fleabane
 
|common_names=Tweedy’s fleabane
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|label=Endemic
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name=Erigeron tweedyi
 
name=Erigeron tweedyi
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|authority=Canby
 
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|publication title=Bot. Gaz.
 
|publication title=Bot. Gaz.
 
|publication year=1888
 
|publication year=1888
|special status=
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|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_654.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_654.xml
 
|tribe=Asteraceae tribe Astereae
 
|tribe=Asteraceae tribe Astereae
 
|genus=Erigeron
 
|genus=Erigeron

Latest revision as of 20:04, 5 November 2020

Perennials, 4–20 cm; taprooted, caudices multicipital crowns or branches relatively short and thick. Stems erect to ascending or decumbent-prostrate, densely strigose (hairs relatively thin), eglandular. Leaves basal (persistent) and cauline; basal (silvery) blades spatulate, broadly elliptic, 50–250 × 5–13 mm, cauline abruptly reduced distally, margins entire, faces densely strigoso-sericeous (hairs gray-white), eglandular. Heads 1–4. Involucres 4–6 × 9–14 mm. Phyllaries in 3–4 series, finely hirsuto-strigose, sparsely minutely glandular. Ray florets 20–50; corollas blue to purple, sometimes white, 5–9 mm, laminae not coiling or reflexing. Disc corollas 3.1–4.3 mm. Cypselae 2–2.5 mm, 2-nerved, faces strigoso-sericeous; pappi: outer of setae, inner of 20–30 bristles.


Phenology: Flowering Jun–Aug.
Habitat: Clay hills, rocky slopes, limestone taluses, shale outcrops, sagebrush-grasslands
Elevation: (1300–)1600–3000 m

Discussion

Selected References

None.

Lower Taxa

None.