View source for Eriophyllum lanatum

{{Treatment/ID
|accepted_name=Eriophyllum lanatum
|accepted_authority=(Pursh) J. Forbes
|publications={{Treatment/Publication
|title=Hort. Woburn.,
|place=183. 1833
|year=1833
}}
|common_names=Common woolly sunflower
|basionyms={{Treatment/ID/Basionym
|name=Actinella lanata
|authority=Pursh
|publication_title=Fl. Amer. Sept.
|publication_place=2: 560. 1813
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Baeriinae;Eriophyllum;Eriophyllum lanatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Baeriinae]]</div><div class="higher-taxon"><small>genus</small>[[Eriophyllum]]</div><div class="higher-taxon"><small>species</small>[[Eriophyllum lanatum]]</div></div>
|volume=Volume 21
|mention_page=page 353, 354, 361, 362
|treatment_page=page 357
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>or subshrubs, 10–100 cm (sometimes flowering first year). <b>Stems</b> erect to decumbent (usually woolly). <b>Leaves</b> (proximal usually alternate): blades mostly lanceolate to oblanceolate, 1–8 cm, often 1–2(–3)-pinnately lobed, ultimate margins toothed, serrate, or entire, revolute or plane, faces hairy, often woolly (more densely abaxially, sometimes glabrate adaxially; distal leaves reduced in size and lobing). <b>Heads</b> borne singly or (2–5+) in corymbiform arrays. <b>Peduncles</b> mostly 3–30 cm. <b>Involucres</b> campanulate to hemispheric, 6–15 mm diam. <b>Phyllaries</b> 5–13(–15), distinct or connate at bases (lanceolate to ovate, carinate or plane). <b>Ray</b> florets 0 or 5–13(–15); laminae golden yellow to yellow, 6–20 (× 2–7) mm. <b>Disc</b> florets 20–300; corollas 2.5–5 mm (tubes usually glandular or glandular-hairy, glabrous in <i></i></i>var.<i><i> hallii</i>). <b>Cypselae</b> 2–5 mm; pappi usually of 6–12 ovate or cuneate to lanceolate or lance-linear (often unequal), erose or lacerate scales 0.3–2 mm, sometimes coroniform, rarely 0.</span><!--

-->{{Treatment/Body
|distribution=w North America;Mexico (probably extinct).
|discussion=<p>Varieties 10 (10 in the flora).</p><!--
--><p><i>Eriophyllum lanatum</i> is a polyploid complex of intergrading regional facies treated here as varieties. Artificial hybridization studies show that strong barriers to interbreeding exist among the varieties at the diploid level (J. S. Mooring 2001). In nature, morphologically intermediate polyploid populations often occur in regions where the ranges of the varieties approach one another. Edaphic factors and light intensity also make identification more difficult by strongly influencing leaf morphology and sizes of structures. For example, cultivated individuals of var. achillioides may have laciniately toothed rather than pinnatifid leaves. Rarely, plants of different varieties maintain their identity while growing side by side. In some instances, one is diploid and the other tetraploid; in others both are diploid. Varieties arachnoideum, croceum, grandiflorum, and obovatum apparently form natural hybrids with <i>E. confertiflorum </i>var.<i> confertiflorum</i>; past hybridizations may have resulted in the origin of <i>E. latilobum</i> and <i>E. jepsonii</i> (L. Constance 1937; P. A. Munz 1959; Mooring 1994) and <i>E. confertiflorum </i>var.<i> tanacetiflorum</i> (Mooring 1994).</p><!--
--><p>Our treatment of <i>Eriophyllum lanatum</i> closely follows that of L. Constance (1937), which was done without benefit of cytogeographic studies. The key is to modal populations of the varieties, usually based on living plants.</p><!--
--><p>Some varieties have been introduced into cultivation as ornamentals.</p>
|tables=
|references={{Treatment/Reference
|id=mooring1975a
|text=Mooring, J. S. 1975. A cytogeographic study of Eriophyllum lanatum (Compositae, Helenieae). Amer. J. Bot. 62: 1027–1037.
}}{{Treatment/Reference
|id=mooring2001a
|text=Mooring, J. S. 2001. Barriers to interbreeding in the Eriophyllum lanatum (Asteraceae, Helenieae) species complex. Amer. J. Bot. 88: 285–312.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Ray florets 8–9 (disc corolla tubes glabrous; s California)
|[[Eriophyllum lanatum var. hallii|Eriophyllum lanatum var. hallii]]
|-id=key-0-1
|1
|Ray florets usually (5–)8–15, rarely 0 (disc corolla tubes glandular or glandular-hairy)
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Pappi to 0.2 mm, sometimes coroniform, rarely 0
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Pappi (0.3–)0.5–2 mm
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Proximal leaves pinnately lobed, lobes 3–5, abaxial faces loosely cobwebby-woolly; California, Coast Ranges
|[[Eriophyllum lanatum var. arachnoideum|Eriophyllum lanatum var. arachnoideum]]
|-id=key-0-3
|3
|Proximal leaves coarsely serrate or shallowly lobed distally, abaxial faces densely silky-woolly; California, Sierra Nevada
|[[Eriophyllum lanatum var. croceum|Eriophyllum lanatum var. croceum]]
|-id=key-0-4
|4
|Proximal leaves 1–2(–3)-pinnately lobed
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Proximal leaves laciniately toothed, serrate, or entire
|[[#key-0-8| > 8]]
|-id=key-0-5
|5
|Proximal leaves 1-pinnately lobed; peduncles mostly 5–30 cm
|[[#key-0-6| > 6]]
|-id=key-0-5
|5
|Proximal leaves 1–2(–3)-pinnately lobed (sinuses almost to midribs); peduncles mostly 3–15 cm
|[[#key-0-7| > 7]]
|-id=key-0-6
|6
|Proximal leaves usually lobed (beginning in proximal 1/2 of leaf); peduncles mostly 10–30 cm; California, sw Oregon
|[[Eriophyllum lanatum var. grandiflorum|Eriophyllum lanatum var. grandiflorum]]
|-id=key-0-6
|6
|Proximal leaves usually lobed (beginning in distal 1/2 of leaf); peduncles mostly 5–15(–20) cm; Idaho, Montana, ne Oregon, e Washington
|[[Eriophyllum lanatum var. lanatum|Eriophyllum lanatum var. lanatum]]
|-id=key-0-7
|7
|Perennials (often clumped); proximal leaves usually mostly opposite, 1(–2)-pinnately lobed, lobes ± linear (with 0–2 teeth, ultimate margins not crispate), abaxial faces usually densely gray-woolly; heads 2–5 per array or borne singly; ray laminae 8–20 mm; British Columbia, sw Oregon, Washington
|[[Eriophyllum lanatum var. leucophyllum|Eriophyllum lanatum var. leucophyllum]]
|-id=key-0-7
|7
|Perennials (sometimes flowering first year); proximal leaves usually mostly alternate, 1–2(–3)-pinnately lobed, lobes usually ± triangular (with 0–4 teeth, ultimate margins often crispate), abaxial faces woolly; heads usually 3–8 per array; ray laminae usually 6–9(–16) mm; California, Nevada, s Oregon
|[[Eriophyllum lanatum var. achilleoides|Eriophyllum lanatum var. achilleoides]]
|-id=key-0-8
|8
|Leaves: margins revolute, abaxial faces woolly, adaxial tufted-woolly or glabrate
|[[#key-0-9| > 9]]
|-id=key-0-8
|8
|Leaves: margins usually plane, sometimes slightly revolute in var. integrifolium, abaxial and adaxial faces woolly
|[[#key-0-10| > 10]]
|-id=key-0-9
|9
|Peduncles mostly 10–30 cm; cypselae (2.4–)2.5–3.5(–4) mm; California, sw Oregon
|[[Eriophyllum lanatum var. grandiflorum|Eriophyllum lanatum var. grandiflorum]]
|-id=key-0-9
|9
|Peduncles mostly 5–15(–20) cm; cypselae (3.4–)3.5–5 mm; Idaho, Montana, ne Oregon, e Washington
|[[Eriophyllum lanatum var. lanatum|Eriophyllum lanatum var. lanatum]]
|-id=key-0-10
|10
|Involucres 6–10 mm diam.; ray florets (5–)8(–10)
|[[Eriophyllum lanatum var. integrifolium|Eriophyllum lanatum var. integrifolium]]
|-id=key-0-10
|10
|Involucres 10–15 mm diam.; ray florets 10–13(–15)
|[[#key-0-11| > 11]]
|-id=key-0-11
|11
|Involucres 10–12 mm diam.; ray laminae 6–7 mm; s California
|[[Eriophyllum lanatum var. obovatum|Eriophyllum lanatum var. obovatum]]
|-id=key-0-11
|11
|Involucres 12–15 mm diam.; ray laminae 7–10(–15) mm; n California,s Oregon
|[[Eriophyllum lanatum var. lanceolatum|Eriophyllum lanatum var. lanceolatum]]
|}
</div></div><!--

-->{{#Taxon:
name=Eriophyllum lanatum
|author=
|authority=(Pursh) J. Forbes
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Actinella lanata
|family=Asteraceae
|distribution=w North America;Mexico (probably extinct).
|reference=mooring1975a;mooring2001a
|publication title=Hort. Woburn.,
|publication year=1833
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_895.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Baeriinae
|genus=Eriophyllum
|species=Eriophyllum lanatum
}}<!--

-->[[Category:Treatment]][[Category:Eriophyllum]]