View source for Monoptilon

{{Treatment/ID
|accepted_name=Monoptilon
|accepted_authority=Torrey & A. Gray
|publications={{Treatment/Publication
|title=Boston J. Nat. Hist.
|place=5: 106, plate 13, figs. 1–6. 1845
|year=1845
}}
|common_names=Desertstar
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Monoptilon
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Astereae]]</div><div class="higher-taxon"><small>genus</small>[[Monoptilon]]</div></div>
|etymology=Greek monos, one, and ptilon, soft feather, alluding to pappus of M. bellidiforme, a solitary plumose bristle
|volume=Volume 20
|mention_page=page 11
|treatment_page=page 210
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 1–5 cm, herbage hispido-hirsute (hairs long, white), minutely glandular; taprooted. <b>Stems</b> prostrate to decumbent (radiating from base), simple or branched. <b>Leaves</b> basal and cauline; alternate; petiolate; blades 1-nerved, oblong to oblanceolate-spatulate, margins entire (apices rounded to obtuse). <b>Heads</b> radiate, borne singly (usually immediately subtended and surrounded by distal leaves). <b>Involucres</b> campanulate, 4–6 × 6–7 mm. <b>Phyllaries</b> 10–14 in 1(–2) series, appressed (purple-tipped), 1-nerved (midnerves raised-indurate, evident only in proximal 1/2; proximally convex, not keeled), linear-lanceolate, equal, margins herbaceous or scarious, faces hirsute. <b>Receptacles</b> flat, pitted, epaleate. <b>Ray</b> florets 12–21, pistillate, fertile; corollas white or rose- or purple-tinged (strongly coiling). <b>Disc</b> florets 28–40, bisexual, fertile; corollas yellow (with prominent orange veins), tubes much shorter than narrowly tubular-funnelform, lobes 5, reflexed, lanceolate; style-branch appendages obtuse to truncate. <b>Cypselae</b> (brownish) obovoid, compressed, 2-ribbed, faces sparsely strigose; pappi persistent, in (1–)2 series, short-toothed cups plus 1 apically plumose bristle or 8–15 inner, tawny white, barbellate, apically attenuate bristles plus outer of short, laciniate paleae. <b>x</b> = 8.</span><!--

-->{{Treatment/Body
|distribution=sw United States;n Mexico.
|discussion=<p>Species 2 (2 in the flora).</p><!--
--><p>Both species of Monoptilon are decumbent to prostrate, hispid annuals with campanulate involucres, white coiling rays, obovoid compressed cypselae, and chromosome number of 2n = 16. The genus was placed by G. L. Nesom (1994) as sister to Chaetopappa.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stems yellow-green; phyllary margins herbaceous; disc corollas loosely strigose proximally; pappi scarious cups 0.1–0.4 mm plus 1 apically plumose bristle usually equaling disc corollas
|[[Monoptilon bellidiforme|Monoptilon bellidiforme]]
|-id=key-0-1
|1
|Stems often prominently reddish purple; phyllary margins proximally with sharply delimited, white-scarious portions, lacerate-ciliate at base; disc corollas glabrous or nearly so; pappi outer crowns of paleae or narrow squamellae 0.5–1 mm plus 8–15 barbellate inner bristles, length 1/3 – 1/2 disc corollas
|[[Monoptilon bellioides|Monoptilon bellioides]]
|}
</div></div><!--

-->{{#Taxon:
name=Monoptilon
|author=Guy L. Nesom
|authority=Torrey & A. Gray
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Barbara Alongi
|distribution=sw United States;n Mexico.
|reference=None
|publication title=Boston J. Nat. Hist.
|publication year=1845
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_468.xml
|tribe=Asteraceae tribe Astereae
|genus=Monoptilon
}}<!--

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