Difference between revisions of "Senecio eremophilus"

Richardson in J. Franklin et al.

in J. Franklin et al., Narr. Journey Polar Sea, 759. 1823.

Treatment appears in FNA Volume 20. Treatment on page 565. Mentioned on page 549, 560.
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|distribution=Mostly n;w North America.
 
|distribution=Mostly n;w North America.
 
|discussion=<p>Varieties 3 (3 in the flora).</p><!--
 
|discussion=<p>Varieties 3 (3 in the flora).</p><!--
--><p>Varieties of Senecio eremophilus are distinguished by head size and distribution. Varieties eremophilus and macdougalii are notably different; var. kingii is intermediate in both morphology and distribution.</p>
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--><p>Varieties of <i>Senecio eremophilus</i> are distinguished by head size and distribution. Varieties eremophilus and macdougalii are notably different; <i></i>var.<i> kingii</i> is intermediate in both morphology and distribution.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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|publication year=1823
 
|publication year=1823
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_1263.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_1263.xml
 
|tribe=Asteraceae tribe Senecioneae
 
|tribe=Asteraceae tribe Senecioneae
 
|genus=Senecio
 
|genus=Senecio

Revision as of 15:19, 18 September 2019

Perennials, (20–)40–80(–140) cm (caudices branched, fibrous-rooted). Herbage glabrous or glabrate. Stems single or loosely clustered. Leaves ± evenly distributed (proximal often withering before flowering); petiolate or sessile; blades ovate or lanceolate to narrowly lanceolate, (3–)6–12(–20) × (1–)1.5–5(–7) cm, bases tapered, margins usually pinnate to lacerate, sometimes dentate. Heads 10–60+ in compound corymbiform arrays. Calyculi of 3–5+ (prominent or inconspicuous) bractlets (lengths to 3/4 phyllaries). Phyllaries (± 8) ± 13, 3–8+ mm, tips green or black. Ray florets ± 8; corolla laminae 5–10 mm. Cypselae usually glabrous, sometimes hirtellous. 2n = 38, 40, 44.

Discussion

Varieties 3 (3 in the flora).

Varieties of Senecio eremophilus are distinguished by head size and distribution. Varieties eremophilus and macdougalii are notably different; var. kingii is intermediate in both morphology and distribution.

Selected References

None.

Key

1 Calyculi: bractlets prominent (lengths of at least some to about 3/4 phyllaries); involucres 7–10 mm diam.; phyllaries 6–8 mm, tips green or weakly, if at all, black Senecio eremophilus var. eremophilus
1 Calyculi: bractlets conspicuous or inconspicuous (lengths rarely to 1/2 phyllaries); involucres 5–8 mm diam.; phyllaries 3–6 mm, tips usually black > 2
2 Calyculi: bractlets conspicuous (lengths to 1/2 phyllaries); involucres (5–)6–8 diam.; phyllaries ± 13, (4–)5–6 mm Senecio eremophilus var. kingii
2 Calyculi: bractlets inconspicuous; involucres 4–5(–6) mm diam.; phyllaries ± 8 or ± 13, 3–5 mm Senecio eremophilus var. macdougalii