View source for Antennaria monocephala

{{Treatment/ID
|accepted_name=Antennaria monocephala
|accepted_authority=de Candolle
|publications={{Treatment/Publication
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|place=6: 269. 1838
|year=1838
}}
|common_names=Pygmy pussytoes
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Antennaria alpina var. monocephala
|authority=(de Candolle) Torrey & A. Gray
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Antennaria;Antennaria monocephala
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Gnaphalieae]]</div><div class="higher-taxon"><small>genus</small>[[Antennaria]]</div><div class="higher-taxon"><small>species</small>[[Antennaria monocephala]]</div></div>
|volume=Volume 19
|mention_page=page 390, 392, 393, 401, 412
|treatment_page=page 411
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Dioecious </b>or gynoecious (staminates uncommon or in equal frequencies as pistillates, respectively). <b>Plants</b> 5–13 cm (stems usually stipitate-glandular). <b>Stolons</b> 2–4 cm. <b>Basal</b> leaves 1-nerved, spatulate to narrowly spatulate or oblanceolate, 9–18 × 2–4 mm, tips mucronate, abaxial faces tomentose, adaxial glabrous or green-glabrescent, or both gray-pubescent. <b>Cauline</b> leaves linear, 4–11 mm, flagged. <b>Heads</b> usually borne singly (rarely 2–3). <b>Involucres</b>: staminate 5–7 mm; pistillate 5–8 mm. <b>Phyllaries</b> distally brown, dark brown, black, or olivaceous. <b>Corollas</b>: staminate 2.5–3.5 mm; pistillate 3.5–4 mm. <b>Cypselae</b> 1–1.3 mm, usually glabrous; pappi: staminate 3–4 mm (none in gynoecious populations); pistillate 4–5 mm. <b>2n</b> = 28, 56, 60?, 70.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;N.W.T.;Nfld. and Labr.;Nunavut;Que.;Yukon;Alaska;Mont.;Wyo.;Russian Far East (Chukotka Peninsula).
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p>It seems reasonable to follow in part E. Hultén’s (1968) broad concept of <i>Antennaria monocephala</i> (R. J. Bayer 1991). Hultén circumscribed it as containing three subspecies. The sexual phase of <i>A. monocephala</i> (i.e., <i></i>subsp.<i> monocephala</i> and subsp. philonipha) is known from southern Alaska, south of the Brooks Range, and to Yukon Territory and adjacent areas of the Northwest Territories and across the Bering Strait on the Chukotka Peninsula. Within his concept of <i>A. monocephala</i>, Hultén also circumscribed the presumably autopolyploid apomictic form of the species as <i>A. monocephala </i>subsp.<i> angustata</i>, thereby extending the range of the species across the Canadian arctic into Greenland and down the western Cordillera into Montana and Wyoming.</p><!--
--><p><i>Antennaria monocephala </i>subsp.<i> monocephala</i> is an amphimictic progenitor of the <i>A. alpina</i> agamic complex, as well as the sexual progenitor of the apomicts of <i></i>subsp.<i> angustata</i>.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Plants gynoecious (staminate plants unknown)
|[[Antennaria monocephala subsp. angustata|Antennaria monocephala subsp. angustata]]
|-id=key-0-1
|1
|Plants dioecious (staminates and pistillates in equal frequencies in populations)
|[[Antennaria monocephala subsp. monocephala|Antennaria monocephala subsp. monocephala]]
|}
</div></div><!--

-->{{#Taxon:
name=Antennaria monocephala
|authority=de Candolle
|rank=species
|parent rank=genus
|synonyms=Antennaria alpina var. monocephala
|basionyms=
|family=Asteraceae
|distribution=Alta.;B.C.;N.W.T.;Nfld. and Labr.;Nunavut;Que.;Yukon;Alaska;Mont.;Wyo.;Russian Far East (Chukotka Peninsula).
|reference=None
|publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|publication year=1838
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_671.xml
|tribe=Asteraceae tribe Gnaphalieae
|genus=Antennaria
|species=Antennaria monocephala
}}<!--

-->[[Category:Treatment]][[Category:Antennaria]]