View source for Sphaeromeria

{{Treatment/ID
|accepted_name=Sphaeromeria
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=7: 401. 1841
|year=1841
}}
|common_names=False sagebrush;chickensage
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Anthemideae;Sphaeromeria
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Anthemideae]]</div><div class="higher-taxon"><small>genus</small>[[Sphaeromeria]]</div></div>
|etymology=Greek sphaira, sphere, and meros, a part, alluding to the capitate arrays of heads in S. capitata
|volume=Volume 19
|mention_page=page 52, 68, 486, 531
|treatment_page=page 499
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>or subshrubs, (1–)5–60(–70) cm (usually aromatic). <b>Stems</b> 1–5+ (with interxylary cork), lax to erect, branched from bases or throughout, glabrous or sericeous to tomentose (hairs medifixed), usually gland-dotted as well. <b>Leaves</b> mostly basal (sometimes in rosettes) or basal and cauline; alternate; petiolate or sessile; blades obovate to cuneate or linear, usually 1–2-pinnately or -palmately lobed (ultimate lobes oblanceolate to linear) or apically 3-toothed or -lobed, ultimate margins entire, faces glabrous or ± sericeous to tomentose and usually gland-dotted. <b>Heads</b> disciform, borne singly or (2–60+) in usually corymbiform, rarely paniculiform, arrays or in subcapitate clusters. <b>Involucres</b> hemispheric to campanulate, 3–5(–12) mm diam. <b>Phyllaries</b> persistent, (8–)12–20+ in 2–3+ series, mostly obovate, unequal to subequal, margins and apices (colorless, pinkish, or brownish) scarious. <b>Receptacles</b> conic to nearly flat (villous in S. potentilloides), epaleate. <b>Ray</b> florets 0 (peripheral pistillate florets 4–15+; corollas ± filiform, lobes usually 3). <b>Disc</b> florets 30–50+, bisexual, fertile; corollas usually bright yellow (ochroleucous in S. cana), tubes ± cylindric, throats ± campanulate, lobes 5, ± deltate (tips glabrous or hairy). <b>Cypselae</b> columnar or obovoid to obconic, ribs 2–3 or 5–10, faces glabrous or gland-dotted (pericarps with myxogenic cells only in S. potentilloides, without resin sacs); pappi usually 0 (of 3–5 subulate scales in S. compacta). <b>x</b> = 9.</span><!--

-->{{Treatment/Body
|distribution=w United States;nw Mexico.
|discussion=<p>Species 9 (8 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=holmgren1976a
|text=Holmgren, A. H., L. M. Shultz, and T. K. Lowrey. 1976. Sphaeromeria, a genus closer to Artemisia than to Tanacetum (Asteraceae: Anthemideae). Brittonia 28: 255–262.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Receptacles villous; cypselae becoming mucilaginous when wet
|[[Sphaeromeria potentilloides|Sphaeromeria potentilloides]]
|-id=key-0-1
|1
|Receptacles glabrous; cypselae not mucilaginous when wet
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Subshrubs, 20–70 cm; leaves mostly cauline (not forming basal clusters)
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Perennials, 1–20 cm (often cespitose); leaves mostly basal (commonly forming clusters)
|[[#key-0-5| > 5]]
|-id=key-0-3
|3
|Corollas ochroleucous, lobes villous
|[[Sphaeromeria cana|Sphaeromeria cana]]
|-id=key-0-3
|3
|Corollas yellow, lobes glabrous or gland-dotted
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Leaves glabrous; heads 5–20 in corymbiform or subumbelliform arrays (as wide as or wider than long)
|[[Sphaeromeria diversifolia|Sphaeromeria diversifolia]]
|-id=key-0-4
|4
|Leaves tomentose; heads (8–)10–30(–60) in paniculiform arrays (longer than wide)
|[[Sphaeromeria ruthiae|Sphaeromeria ruthiae]]
|-id=key-0-5
|5
|Heads 1–7 (S. argentea) or 8–20
|[[#key-0-6| > 6]]
|-id=key-0-5
|5
|Heads 1–3(–5)
|[[#key-0-7| > 7]]
|-id=key-0-6
|6
|Leaf blades (± cuneate, 7–15 mm) entire or apices 3(–5)-toothed or -lobed, faces silvery-canescent; heads usually in subcapitate to corymbiform arrays (1–1.5 cm across), sometimes borne singly
|[[Sphaeromeria argentea|Sphaeromeria argentea]]
|-id=key-0-6
|6
|Leaf blades (± cuneate, 8–20 mm) usually 1–2-pinnati-palmately lobed (ultimate lobes ± linear), faces ± tomentose; heads in tight, capitate arrays (1–1.3 cm across)
|[[Sphaeromeria capitata|Sphaeromeria capitata]]
|-id=key-0-7
|7
|Leaves: blades (10–25 mm) pinnati-palmately lobed (lobes 3–6+, ± oblanceolate to linear) or linear, faces sericeous (pappi of 3–5, subulate scales)
|[[Sphaeromeria compacta|Sphaeromeria compacta]]
|-id=key-0-7
|7
|Leaves: blades (15–30 × 1.5–8 mm) pinnati-palmately lobed (lobes 2–3, linear, 1–2 mm wide) or linear, faces silvery-canescent
|[[Sphaeromeria simplex|Sphaeromeria simplex]]
|}
</div></div><!--

-->{{#Taxon:
name=Sphaeromeria
|author=Timothy K. Lowrey;Leila M. Shultz
|authority=Nuttall
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=w United States;nw Mexico.
|reference=holmgren1976a
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1841
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_835.xml
|tribe=Asteraceae tribe Anthemideae
|genus=Sphaeromeria
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Anthemideae]]