Difference between revisions of "Chaenactis douglasii"

(Hooker) Hooker & Arnott

Bot. Beechey Voy., 354. 1839.

Common names: Hoary pincushion Douglas’s dustymaiden
Basionym: Hymenopappus douglasii Hooker
Synonyms: Macrocarphus douglasii (Hooker) Nuttall
Treatment appears in FNA Volume 21. Treatment on page 405. Mentioned on page 403, 404, 407.
FNA>Volume Importer
 
FNA>Volume Importer
Line 28: Line 28:
 
|distribution=North America.
 
|distribution=North America.
 
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
 
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p>Chaenactis douglasii is widespread and variable (see discussion under var. douglasii).</p>
+
--><p><i>Chaenactis douglasii</i> is widespread and variable (see discussion under <i></i>var.<i> douglasii</i>).</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
Line 63: Line 63:
 
|publication year=1839
 
|publication year=1839
 
|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/V21_1019.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_1019.xml
 
|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae

Revision as of 15:29, 18 September 2019

Biennials or perennials, (2–)5–50(–60) cm (rarely slightly woody or flowering first year, sometimes cespitose or ± matted); proximal indument thinning with age, grayish, mostly arachnoid-sericeous to thinly lanuginose. Stems 1–25+, erect to spreading. Leaves basal, or basal (sometimes withering) and ± cauline, (1–)2–12(–15) cm; largest blades ± elliptic or slightly lanceolate to ovate, ± 3-dimensional, usually 2-pinnately lobed; primary lobes (4–)5–9(–12) pairs, ± congested, scarcely imbricate, ultimate lobes ± involute and/or twisted. Heads 1–25+ per stem. Peduncles mostly ascending to erect, 1–10 cm. Involucres obconic to ± hemispheric. Phyllaries: longest 9–15(–17) mm; outer usually stipitate-glandular (sometimes sparsely or obscurely, rarely eglandular) and, often, arachnoid to lanuginose and, sometimes, sparsely villous, apices usually ± squarrose, pliant. Corollas 5–8 mm. Cypselae 5–8 mm (usually sparsely glandular amidst other indument); pappi: longest scales 3–6 mm.

Discussion

Varieties 2 (2 in the flora).

Chaenactis douglasii is widespread and variable (see discussion under var. douglasii).

Selected References

None.

Key

1 Leaves basal (sometimes withering) and ± cauline; plants not or scarcely cespitose, not matted; stems usually 1–5(–12); heads (1–)2–25+ per stem Chaenactis douglasii var. douglasii
1 Leaves strictly basal; plants cespitose or ± matted; stems (1–)10–25+; heads 1(–2) per stem Chaenactis douglasii var. alpina