Difference between revisions of "Hymenoxys cooperi"

(A. Gray) Cockerell

Bull. Torrey Bot. Club 31: 494. 1904.

Common names: Cooper’s rubberweed or bitterweed
Basionym: Actinella cooperi A. Gray Proc. Amer. Acad. Arts 7: 359. 1868
Synonyms: Hymenoxys cooperi var. canescens (D. C. Eaton) K. F. Parker
Treatment appears in FNA Volume 21. Treatment on page 442. Mentioned on page 435, 436, 437.
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|common_names=Cooper’s rubberweed or bitterweed
 
|common_names=Cooper’s rubberweed or bitterweed
|basionyms={{Treatment/ID/Synonym
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|basionyms={{Treatment/ID/Basionym
 
|name=Actinella cooperi
 
|name=Actinella cooperi
 
|authority=A. Gray
 
|authority=A. Gray
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|publication_title=Proc. Amer. Acad. Arts
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|publication_place=7: 359. 1868
 
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|synonyms={{Treatment/ID/Synonym
 
|synonyms={{Treatment/ID/Synonym
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|elevation=(1000–)1500–2500(–3500) m
 
|elevation=(1000–)1500–2500(–3500) m
 
|distribution=Ariz.;Calif.;Idaho;Nev.;Oreg.;Utah.
 
|distribution=Ariz.;Calif.;Idaho;Nev.;Oreg.;Utah.
|discussion=<p>Some plants of <i>Hymenoxys cooperi</i>, mostly 10–40 cm with mostly 1–6 heads, have been called <i></i>var.<i> canescens</i>.</p>
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|discussion=<p>Some plants of <i>Hymenoxys cooperi</i>, mostly 10–40 cm with mostly 1–6 heads, have been called <i></i></i>var.<i><i> canescens</i>.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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|publication year=1904
 
|publication year=1904
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_1109.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1109.xml
 
|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae

Revision as of 18:46, 24 September 2019

Biennials or perennials, (10–)20–80(–100) cm (monocarpic; sometimes with sparingly branched, woody caudices). Stems 1–3(–15), usually purple-red-tinted proximally, sometimes purple-red-tinted throughout, branched distally, ± hairy. Leaves: blades simple or lobed (lobes 3–9), ± hairy, gland-dotted (basal leaf bases ± long-villous-woolly); mid leaves lobed (lobes 3–5, terminal lobes 1–2.5 mm wide). Heads (1–)7–45(–80) per plant, in paniculiform to corymbiform arrays. Peduncles (2–)3.5–8(–13) cm, ± hairy. Involucres subhemispheric to hemispheric, 8–10 × 10–17 mm. Phyllaries in 2 series, unequal; outer 8–15, basally connate 1/3–1/2 their lengths (moderately to strongly keeled), lanceolate, 4.5–8.9 mm, apices acuminate to acute; inner 14–22, obovate to oblanceolate, 4.1–6.8 mm, apices acuminate to mucronate. Ray florets 9–14; corollas yellow, 10.2–17(–21.5) × 4–7.5(–9.2) mm. Disc florets 30–150+; corollas 2.7–4.8 mm. Cypselae narrowly obpyramidal, 1.7–3.7 mm; pappi of 5–6(–8) obovate, aristate scales 1.3–3.3 mm. 2n = 30.


Phenology: Flowering May–Jun(–Sep).
Habitat: Roadsides, open areas, edges of juniper-pine forests
Elevation: (1000–)1500–2500(–3500) m

Distribution

V21-1109-distribution-map.gif

Ariz., Calif., Idaho, Nev., Oreg., Utah.

Discussion

Some plants of Hymenoxys cooperi, mostly 10–40 cm with mostly 1–6 heads, have been called var. canescens.

Selected References

None.

Lower Taxa

None.
... more about "Hymenoxys cooperi"
Mark W. Bierner +
(A. Gray) Cockerell +
Actinella cooperi +
Cooper’s rubberweed or bitterweed +
Ariz. +, Calif. +, Idaho +, Nev. +, Oreg. +  and Utah. +
(1000–)1500–2500(–3500) m +
Roadsides, open areas, edges of juniper-pine forests +
Flowering May–Jun(–Sep). +
Bull. Torrey Bot. Club +
Hymenoxys cooperi var. canescens +
Hymenoxys cooperi +
Hymenoxys +
species +