View source for Osmadenia

{{Treatment/ID
|accepted_name=Osmadenia
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=7: 391. 1841
|year=1841
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Madiinae;Osmadenia
|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 Madiinae]]</div><div class="higher-taxon"><small>genus</small>[[Osmadenia]]</div></div>
|etymology=Greek osma, odor, and aden, gland, alluding to strong-scented, glandular herbage
|volume=Volume 21
|mention_page=page 256, 276, 280, 291
|treatment_page=page 269
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 5–40 cm (self-incompatible; herbage strongly scented). <b>Stems</b> erect (branched, branchlets relatively many, commonly spreading, threadlike, densely glandular, scabrous to shaggy-hairy). <b>Leaves</b> mostly cauline; alternate; sessile; blades linear, margins entire, faces hispidulous and glandular (proximally ± ciliate or shaggy-hairy). <b>Heads</b> radiate, in loose, cymiform arrays. <b>Peduncular</b> bracts with tack-glands 0 (strigillose, strongly glandular, margins often proximally pectinate, ciliate). <b>Involucres</b> ovoid, 2–4 mm diam. <b>Phyllaries</b> falling, 3–5 in 1 series (each partly enveloping a ray cypsela, apices acute to attenuate). <b>Receptacles</b> flat, glabrous, paleate (paleae persistent, in 1 series between rays and discs, connate, forming cups, distinct apices acute, often apiculate). <b>Ray</b> florets 3–5, pistillate, fertile; corollas wholly or mostly white (laminae 3-lobed, lobes sometimes each with prominent medial red blotch, overall often fading reddish, sinuses ± equaling laminae). <b>Disc</b> florets 3–10, bisexual, fertile; corollas usually wholly white, sometimes lobes each with prominent medial red blotch or reddish overall, tubes shorter than throats, lobes 5, deltate (anthers ± dark purple; styles glabrous proximal to branches). <b>Cypselae</b> (rays) ± obcompressed (± 3-angled, abaxial sides usually broadly 2-faced, angles between those faces usually 90+°, adaxial sides nearly flat), apices beaked, beaks off center, faces rugose, glabrous; or (discs) narrowly clavate, appressed-hairy; pappi (rays) 0, or (discs) of 4–5 lance-attenuate to aristate scales alternating with 4–5 shorter, ± fimbriate scales. <b>x</b> = 9.</span><!--

-->{{Treatment/Body
|distribution=Calif.;nw Mexico.
|discussion=<p>Species 1.</p>
|tables=
|references={{Treatment/Reference
|id=carr1977a
|text=Carr, G. D. 1977. A cytological conspectus of the genus Calycadenia (Asteraceae): An example of contrasting modes of evolution. Amer. J. Bot. 64: 694–703.
}}
}}<!--

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-->{{#Taxon:
name=Osmadenia
|author=Robert L. Carr;Gerald D. Carr
|authority=Nuttall
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Calif.;nw Mexico.
|reference=carr1977a
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1841
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V21_661.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae
|genus=Osmadenia
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Madiinae]]