View source for Tephroseris

{{Treatment/ID
|accepted_name=Tephroseris
|accepted_authority=(Reichenbach) Reichenbach
|publications={{Treatment/Publication
|title=Deut. Bot. Herb.-Buch,
|place=87. 1841
|year=1841
}}
|basionyms={{Treatment/ID/Basionym
|name=Tephroseris
|authority=Reichenbach
|publication_title=in J. C. Mössler and H. G. L. Reichenbach, Handb. Gewächsk. ed.
|publication_place=2, 2: 1498. 1829
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Tephroseris
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Tephroseris]]</div></div>
|etymology=Greek tephros, ashlike or ash-colored, and seris, endive or chicory, presumably alluding to color of the densely woolly leaves
|volume=Volume 20
|mention_page=page 541, 542, 543, 545, 548
|treatment_page=page 615
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> biennials, or perennials, (5–)10–100+ cm (rhizomatous or caudices ± erect; plants usually arachnose, floccose, lanate, tomentose, or villous, sometimes unevenly glabrate). <b>Stems</b> 1 or more (loosely clustered), erect. <b>Leaves</b> basal and cauline; alternate; petiolate (basal and proximal cauline; distal leaves usually sessile, smaller, bractlike); blades pinnately nerved, lanceolate, linear-oblanceolate, oblanceolate, ovate, or subrhombic (bases tapering or contracted to petioles), margins entire or dentate, denticulate, subentire, subpinnatifid, or wavy, faces usually arachnose, floccose, lanate, tomentose, or villous, sometimes unevenly glabrate. <b>Heads</b> radiate or discoid, borne singly or (2–40+) in corymbiform arrays. <b>Calyculi</b> 0. <b>Involucres</b> hemispheric or campanulate to turbinate, 8–12+ mm diam. <b>Phyllaries</b> persistent, usually 8, 13, or 21 in (1–)2 series, erect, distinct (margins interlocking), lance-linear to lanceolate or oblong, equal, margins ± scarious (abaxial faces usually arachnose, floccose, lanate, tomentose, or villous, sometimes unevenly glabrate). <b>Receptacles</b> flat or ± dome-shaped (not conic), smooth, epaleate. <b>Ray</b> florets 0 or mostly 8, 13, or 21, pistillate, fertile; corollas usually yellow, orange, or orange-yellow, sometimes ochroleucous or white [brick-colored, purplish] (laminae usually 5–20 mm, sometimes 1–3 mm). <b>Disc</b> florets 30–80+, bisexual, fertile; corollas usually yellow, orange, or orange-yellow, sometimes ochroleucous or white [brick-colored, purplish], tubes longer than or equaling campanulate throats, lobes 5, erect or recurved, lance-linear (anther collars cylindric); style branches: stigmatic areas continuous, apices rounded-truncate. <b>Cypselae</b> ± cylindric, 10-ribbed or -nerved, glabrous or puberulent; pappi persistent, of 30–60+, white, whitish, or brownish, barbellulate bristles (equaling or slightly exceeding involucres, sometimes exceeding involucres to 10 mm in <i>T. palustris</i>). <b>x</b> = 24.</span><!--

-->{{Treatment/Body
|distribution=n North America;centered in n Eurasia.
|discussion=<p>Species 40–50 (6 in the flora).</p><!--
--><p>Species of <i>Tephroseris</i> are variable and poorly defined; their nomenclature is complex. The present treatment is provisional.</p><!--
--><p><i>Tephroseris</i> has been treated within <i>Senecio</i> in most North American floristic studies (T. M. Barkley 1999). Moreover, the tradition has been to treat much of the variation as varieties or subspecies within a broadly circumscribed <i>Senecio</i> (<i>Tephroseris</i>) atropurpureus (e.g., Barkley 1978; E. Hultén 1968; H. J. Scoggan 1978–1979, part 4; S. L. Welsh 1974); current thought is to recognize more species and thereby bring North American species concepts more into accord with those of Russian botanists (e.g., S. S. Kharkevich 1992, vol. 6; I. M. Krasnoborov 1997, vol. 13; E. Wiebe 2000). The circumscription of <i>Tephroseris</i> was discussed by B. Nordenstam (1978).</p><!--
--><p>The Eurasian <i>Tephroseris</i> atropurpureus (Ledebour) B. Fedtschenko, in the strict sense, and T. subfrigida (Komarov) Holub may occur in far western Alaska. The former resembles <i>T. frigida</i>; it has smaller heads, narrower, purplish phyllaries, and a different “aspect.” <i>Tephroseris</i> subfrigida is a relatively tall, thin plant with phyllaries purplish on the distal one-third; the bases of the heads have a light yellowish, non-woolly tomentum.</p>
|tables=
|references={{Treatment/Reference
|id=cufodontis1933a
|text=Cufodontis, G. 1933. Kritische Revision von Senecio Section Tephroseris. Feddes Repert. Spec. Nov. Regni Veg. 70: 1–266.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Annuals or biennials (rarely perennials; caudices fibrous-rooted); leaves basal and cauline (basal and proximal sometimes withering before flowering, mid-stem leaves prominent at flowering); heads (4–)6–20(–40+)
|[[Tephroseris palustris|Tephroseris palustris]]
|-id=key-0-1
|1
|Perennials (rhizomes spreading, sometimes suberect); leaves basal and cauline (basal and proximal cauline usually evident at flowering; distal cauline smaller, bractlike); heads 1–4(–6+)
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Basal and proximal leaves: margins usually irregularly toothed; phyllaries brown-woolly
|[[Tephroseris kjellmanii|Tephroseris kjellmanii]]
|-id=key-0-2
|2
|Basal and proximal leaves: margins subentire or denticulate (if shallowly toothed, phyllaries yellow-hairy at bases); phyllaries ± villous or floccose- or lanate-tomentose (hairs yellow, white, or purplish), sometimes glabrate
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Phyllaries floccose-tomentose (hairs yellow)
|[[Tephroseris yukonensis|Tephroseris yukonensis]]
|-id=key-0-3
|3
|Phyllaries ± villous or floccose- or lanate-tomentose (hairs white or purplish), sometimes glabrate
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Involucres tapering to peduncles; phyllaries (and distal herbage) ± villous (at least some hairs purplish or with purplish cross-walls)
|[[Tephroseris frigida|Tephroseris frigida]]
|-id=key-0-4
|4
|Involucres ± abruptly contracted to peduncles; phyllaries floccose- or lanate-tomentose (hairs white) to unevenly glabrate
|[[#key-0-5| > 5]]
|-id=key-0-5
|5
|Phyllaries purple (at least distal 1/3); corollas orange or orange-yellow; laminae of ray corollas usually 15–25 mm
|[[Tephroseris lindstroemii|Tephroseris lindstroemii]]
|-id=key-0-5
|5
|Phyllaries greenish (tips sometimes purplish); corollas yellow; laminae of ray corollas (8–)10–15 mm
|[[Tephroseris tundricola|Tephroseris tundricola]]
|}
</div></div><!--

-->{{#Taxon:
name=Tephroseris
|author=Theodore M. Barkley†;David F. Murray
|authority=(Reichenbach) Reichenbach
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=Tephroseris
|family=Asteraceae
|distribution=n North America;centered in n Eurasia.
|reference=cufodontis1933a
|publication title=Deut. Bot. Herb.-Buch,
|publication year=1841
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1380.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Tephroseris
}}<!--

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