View source for Chrysothamnus viscidiflorus

{{Treatment/ID
|accepted_name=Chrysothamnus viscidiflorus
|accepted_authority=(Hooker) Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=7: 324. 1840
|year=1840
}}
|common_names=Yellow or sticky-leaf rabbitbrush
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Crinitaria viscidiflora
|authority=Hooker
|rank=species
|publication_title=Fl. Bor.-Amer.
|publication_place=2: 24. 1834
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Chrysothamnus;Chrysothamnus viscidiflorus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Astereae]]</div><div class="higher-taxon"><small>genus</small>[[Chrysothamnus]]</div><div class="higher-taxon"><small>species</small>[[Chrysothamnus viscidiflorus]]</div></div>
|volume=Volume 20
|mention_page=page 188
|treatment_page=page 191
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 10–120 cm; with woody, branched caudices, bark whitish tan, becoming gray, flaky and fibrous with age. <b>Stems</b> ascending, green, soon becoming tan, glabrous or puberulent, sometimes resin-dotted, often resinous. <b>Leaves</b> ascending, spreading, or deflexed; sessile; blades with evident midnerves plus sometimes 1–2 pairs of smaller, collateral nerves, linear to lanceolate, 10–75 × 0.5–10 mm, flat or sulcate, often twisted, margins often undulate, sometimes ciliate, apices acute to apiculate, faces glabrous or puberulent. <b>Heads</b> in dense, rounded cymiform arrays (to 7 cm wide), not overtopped by distal leaves. <b>Involucres</b> cylindric to obconic or campanulate, 4–7 × 1.5–2.5 mm. <b>Phyllaries</b> 12–24 in 3–5 series, in spirals or weak vertical ranks, mostly tan, green to brown subapical patch often present, midnerves usually evident (at least distally), linear-oblong, lanceolate to elliptic or obovate to spatulate, 1–5 × 0.5–1.2 mm, unequal, chartaceous, margins scarious, eciliate or ciliolate to erose-ciliolate, flat or convex, sometimes weakly keeled, apices acute to obtuse or rounded, sometimes apiculate, flat, faces glabrous or puberulent. <b>Disc</b> florets (3–)4–5(–14); corollas 3.5–6.5 mm, lobes 0.7–1.7 mm; style branches 2.2–3.2 mm (exserted beyond spreading corolla lobes), appendages 0.8–1.5 mm (length shorter than stigmatic portion). <b>Cypselae</b> tan to reddish brown, turbinate, 2.5–4.2 mm, ± 5-angled, moderately to densely hairy; pappi tan, 3.5–6 mm.</span><!--

-->{{Treatment/Body
|distribution=B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;N.Mex.;Nebr.;Nev.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|discussion=<p>Subspecies 5 (5 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves flat, glabrous; corollas 3.5–4.5 mm; nc Arizona
|[[Chrysothamnus viscidiflorus subsp. planifolius|Chrysothamnus viscidiflorus subsp. planifolius]]
|-id=key-0-1
|1
|Leaves twisted or hairy, or corollas 3.5–6.5 mm; w United States
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Distal stems, and frequently leaves, hairy
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Stems glabrous; leaves glabrous, margins ciliate
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Stems greenish, hirtellous to puberulent; leaves green, 3- or 5-nerved, 2–6 mm wide, abaxial faces hirsute to hirtellous, adaxial usually glabrous
|[[Chrysothamnus viscidiflorus subsp. lanceolatus|Chrysothamnus viscidiflorus subsp. lanceolatus]]
|-id=key-0-3
|3
|Stems and leaves grayish green, densely puberulent; leaves 1–2(–4) mm wide; 1-nerved (sometimes 3-nerved proximally)
|[[Chrysothamnus viscidiflorus subsp. puberulus|Chrysothamnus viscidiflorus subsp. puberulus]]
|-id=key-0-4
|4
|Leaves 0.5–1 mm wide; florets 3–4(–5); involucres ± turbinate
|[[Chrysothamnus viscidiflorus subsp. axillaris|Chrysothamnus viscidiflorus subsp. axillaris]]
|-id=key-0-4
|4
|Leaves 1–10 mm wide; if 1 mm wide, involucres narrowly cylindric, and florets 4–14
|[[Chrysothamnus viscidiflorus subsp. viscidiflorus|Chrysothamnus viscidiflorus subsp. viscidiflorus]]
|}
</div></div><!--

-->{{#Taxon:
name=Chrysothamnus viscidiflorus
|authority=(Hooker) Nuttall
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Crinitaria viscidiflora
|family=Asteraceae
|distribution=B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;N.Mex.;Nebr.;Nev.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|reference=None
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1840
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_418.xml
|tribe=Asteraceae tribe Astereae
|genus=Chrysothamnus
|species=Chrysothamnus viscidiflorus
}}<!--

-->[[Category:Treatment]][[Category:Chrysothamnus]]