View source for Micropus

{{Treatment/ID
|accepted_name=Micropus
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 927. 1753
|year=1753
}}{{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 398. 1754
|year=1754
}}
|common_names=Cottonseed;micrope;falzblume
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Bombycilaena
|authority=(de Candolle) Smoljaninova
}}
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Micropus
|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>[[Micropus]]</div></div>
|etymology=Greek micros, small, and pous, foot, perhaps alluding to tiny receptacles
|volume=Volume 19
|mention_page=page 26, 28, 385, 386, 388, 450, 455
|treatment_page=page 454
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 1–50 cm. <b>Stems</b> 1, ± erect, or 2–5[–10], ascending to erect [prostrate]. <b>Leaves</b> cauline; mostly alternate [opposite]; blades narrowly oblanceolate to elliptic [spatulate]. <b>Heads</b> usually in glomerules of 2–5 in racemiform to paniculiform or distally ± dichasiform [axillary] arrays, sometimes borne singly. <b>Involucres</b> inconspicuous. <b>Phyllaries</b> 4–6, ± equal (unlike paleae, scarious, hyaline). <b>Receptacles</b> depressed-spheric or obovoid (heights 0.5–1.8 times diams.), glabrous. <b>Pistillate</b> paleae falling, erect to incurved; bodies with 5+ nerves (nerves ± parallel, obscure), obovoid, saccate most of lengths (trigonously [evenly] compressed, galeate, abaxially rounded [corniculate-crested], each enclosing a floret); wings ± erect (and lateral) or inflexed (and subapical). <b>Staminate</b> paleae 0 or 1–3, falling, erect in fruit (not enlarged), shorter than pistillate paleae; bodies linear-lanceolate to oblanceolate. <b>Pistillate</b> florets 4–12. <b>Functionally</b> staminate florets 2–5; corolla lobes 4–5, ± equal. <b>Bisexual</b> florets 0. <b>Cypselae</b> brown, monomorphic: ± trigonously [evenly] compressed, ± obovoid, curved, gibbous abaxially, faces glabrous, smooth, shiny, corolla scars ± lateral; pappi: pistillate 0, staminate 0 or of 1–5 bristles (hidden in heads). <b>x</b> = 14.</span><!--

-->{{Treatment/Body
|distribution=w United States;nw Mexico;s Europe;sw Asia;n Africa.
|discussion=<p>Species 5 (2 in the flora).</p><!--
--><p>See discussion of Filagininae following the tribal description (p. 385).</p><!--
--><p>Micropus species are found mostly in dry, open habitats of Mediterranean climates. In the flora, they are known only from west-draining portions of the Californian Floristic Province and the Willamette Valley in Oregon.</p><!--
--><p>The two North American species constitute Micropus sect. Rhyncholepis Nuttall. Recent European workers (e.g., J. Holub 1998) have included sect. Rhyncholepis in Bombycilaena, leaving M. supinus Linnaeus in a monotypic genus. Based on phylogenetic data (J. D. Morefield 1992), that approach would include in Bombycilaena species ancestral to, and derived from ancestors of, Micropus. I maintain Micropus in its traditional sense here. Micropus and Psilocarphus appear to be monophyletic sister genera derived from near or within Stylocline. A malformed specimen from Monterey County, California, appears to be a sterile hybrid between M. californicus and a species of Psilocarphus.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Pistillate paleae 8–12 in 2 series, bodies mainly chartaceous, cartilaginous medially, wings prominent, subapical, inflexed, plane to concave; cypselae: corolla scars in distal 1/4; receptacle heights 1.2–1.8 times diams.; staminate paleae mostly 1–3; staminate corolla lobes 4 (–5); staminate pappi of 1–5 bristles
|[[Micropus amphibolus|Micropus amphibolus]]
|-id=key-0-1
|1
|Pistillate paleae 4–7(–8) in 1 series, bodies cartilaginous to bony throughout, wings obscure, lateral, ± erect, involute; cypselae: corolla scars ± median; receptacle heights 0.5–0.8 times diams.; staminate paleae 0; staminate corolla lobes usually 5; staminate pappi 0 or of 1 bristle
|[[Micropus californicus|Micropus californicus]]
|}
</div></div><!--

-->{{#Taxon:
name=Micropus
|author=James D. Morefield
|authority=Linnaeus
|rank=genus
|parent rank=tribe
|synonyms=Bombycilaena
|basionyms=
|family=Asteraceae
|illustrator=Linny Heagy
|distribution=w United States;nw Mexico;s Europe;sw Asia;n Africa.
|reference=None
|publication title=Sp. Pl.;Gen. Pl. ed.
|publication year=1753;1754
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V19_753.xml
|tribe=Asteraceae tribe Gnaphalieae
|genus=Micropus
}}<!--

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