View source for Sclerocarpus

{{Treatment/ID
|accepted_name=Sclerocarpus
|accepted_authority=Jacquin
|publications={{Treatment/Publication
|title=Icon. Pl. Rar.
|place=1: 17, plate 176. 1781
|year=1781
}}
|common_names=Mexican bone-bract
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Sclerocarpus
|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 Helianthinae]]</div><div class="higher-taxon"><small>genus</small>[[Sclerocarpus]]</div></div>
|etymology=Greek skleros, hard, and karpos, fruit, alluding to hardened paleae enfolding disc cypselae
|volume=Volume 21
|mention_page=page 135
|treatment_page=page 137
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>[perennials or subshrubs], 60–200 cm. <b>Stems</b> sprawling to erect, branched from bases or ± throughout. <b>Leaves</b> mostly cauline; opposite (proximal) or alternate; petiolate [sessile]; blades 3-nerved, ovate to rhombic or lanceolate, bases cuneate to rounded, margins coarsely toothed, faces glabrous or ± scabrous. <b>Heads</b> radiate, borne singly. <b>Involucres</b> rotate to hemispheric, 12–20 mm diam. <b>Phyllaries</b> persistent, 5–8[–21] in 1(–2) series (green, oblong to linear). <b>Receptacles</b> low-conic, paleate (paleae each closely investing subtended floret, each forming a hard perigynium around a fruit and shed with it). <b>Ray</b> florets 5–8, neuter; corollas (readily falling) yellow to orange. <b>Disc</b> florets 10–50, bisexual, fertile; corollas usually yellow to orange, sometimes with purple, tubes much shorter than cylindric throats, lobes 5, lance-linear. <b>Cypselae</b> (within perigynia) weakly compressed, obliquely obovoid or arcuate (glabrous); pappi 0, or coroniform (of distinct or connate scales or bristles). <b>x</b> = 12.</span><!--

-->{{Treatment/Body
|distribution=s United States;Mexico;Central America;one species in Old World tropics.
|discussion=<p>Species ca. 12 (1 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=feddema1966a
|text=Feddema, C. 1966. Systematic Studies in the Genus Sclerocarpus and the Genus Aldama (Compositae). Ph.D. dissertation. University of Michigan.
}}
}}<!--

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-->{{#Taxon:
name=Sclerocarpus
|author=Neil A. Harriman
|authority=Jacquin
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Linny Heagy
|illustration copyright=Flora of North America Association
|distribution=s United States;Mexico;Central America;one species in Old World tropics.
|reference=feddema1966a
|publication title=Icon. Pl. Rar.
|publication year=1781
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_333.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae
|genus=Sclerocarpus
}}<!--

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