View source for Corispermum americanum

{{Treatment/ID
|accepted_name=Corispermum americanum
|accepted_authority=(Nuttall) Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=5: 165. 1834
|year=1834
}}
|common_names=American bugseed
|basionyms={{Treatment/ID/Basionym
|name=Corispermum hyssopifolium var. americanum
|authority=Nuttall
|publication_title=Gen. N. Amer. Pl.
|publication_place=1: 4. 1818
}}
|synonyms={{Treatment/ID/Synonym
|name=Corispermum imbricatum
|authority=A. Nelson
}} {{Treatment/ID/Synonym
|name=Corispermum marginale
|authority=Rydberg
}} {{Treatment/ID/Synonym
|name=Corispermum simplicissimum
|authority=Lunell
}}
|hierarchy=Chenopodiaceae;Corispermum;Corispermum americanum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Chenopodiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Corispermum]]</div><div class="higher-taxon"><small>species</small>[[Corispermum americanum]]</div></div>
|volume=Volume 4
|mention_page=page 315
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>branched from or beyond base (rarely simple or with few simple branches), 10–35(–50) cm, sparsely covered with dendroid or stellate hairs, often becoming glabrous. <b>Leaf</b> blades linear or narrowly linear (occasionally linear-lanceolate or almost filiform), usually plane or occasionally folded (especially in dry plants), 1.5–3.5(–4) × 0.1–0.3 cm. <b>Inflorescences</b> usually lax, interrupted, rarely ± condensed distally, linear, narrowly linear, or occasionally narrowly clavate. <b>Bracts</b> ovate-lanceolate,lanceolate, linear-lanceolate, or occasionally proximal ones almost linear, much longer than distal, 0.5–2(–3.5) × (0.2–)0.3–0.7 cm. <b>Perianth</b> segment 1. <b>Fruits</b> yellowish brown, greenish brown, light brown, or brown, often with reddish brown spots and whitish warts, slightly convex abaxially, usually plane or slightly concave adaxially, obovate or obovate-elliptic, usually broadest beyond middle, (2.3–)2.5–4.5 × 2–3.5 mm, shiny or dull; wing translucent, thin, (occasionally translucent only at margin, thick), (0.15–)0.2–0.3(–0.4) mm wide, margins entire or rarely indistinctly erose, apex broadly triangular, less commonly truncate or rounded.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p><i>Corispermum americanum </i>var.<i> americanum</i> may also occur in British Columbia, where only immature specimens have been seen. Specimens from Oregon and Wyoming are transitional toward <i>Corispermum villosum</i>. The names <i>C. hyssopifolium</i> and <i>C. nitidum</i> were commonly misapplied to this native species by many authors (see also note under <i>C. nitidum</i>).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Fruits (2.3-)2.5-3.5 mm, wing usually 0.2-0.3 mm wide (occasionally fruits almost wingless in some southwestern plants)
|[[Corispermum americanum var. ameri|Corispermum americanum var. ameri]]
|-id=key-0-1
|1
|Fruits (3-)3.5-4(-4.5) mm, wing usually 0.3-0.4(-0.5) mm wide.
|[[Corispermum americanum var. rydbe|Corispermum americanum var. rydbe]]
|}
</div></div><!--

-->{{#Taxon:
name=Corispermum americanum
|author=
|authority=(Nuttall) Nuttall
|rank=species
|parent rank=genus
|synonyms=Corispermum imbricatum;Corispermum marginale;Corispermum simplicissimum
|basionyms=Corispermum hyssopifolium var. americanum
|family=Chenopodiaceae
|distribution=North America;Mexico.
|reference=None
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1834
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V4/V4_606.xml
|genus=Corispermum
|species=Corispermum americanum
}}<!--

-->[[Category:Treatment]][[Category:Corispermum]]