View source for Melampodium

{{Treatment/ID
|accepted_name=Melampodium
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 921. 1753
|year=1753
}}, {{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 392. 1754
|year=1754
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Melampodiinae;Melampodium
|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 Melampodiinae]]</div><div class="higher-taxon"><small>genus</small>[[Melampodium]]</div></div>
|etymology=Often said (erroneously) to be from Greek melampodion, blackfoot; evidently traceable to Melampus, a soothsayer of renown in Greek mythology
|volume=Volume 21
|mention_page=page 33
|treatment_page=page 34
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> perennials, or subshrubs, 5–50(–150+) cm. <b>Stems</b> erect or prostrate. <b>Leaves</b> cauline; opposite; petiolate (petioles usually winged) or sessile; blades deltate, lance-elliptic, lanceolate, lance-linear, linear, linear-oblong, ovate, or rhombic, sometimes pinnately lobed, ultimate margins entire or toothed, faces usually hairy, usually gland-dotted (at least abaxial). <b>Heads</b> radiate, borne singly (from forks of branches, peduncles often uncinate). <b>Involucres</b> mostly hemispheric (sometimes ± cupulate), [4–]5–20(–30+) mm diam. <b>Phyllaries</b> persistent (outer) or falling with cypselae, 8–20+ in 2 series (outer [2–]5 often ± connate, herbaceous, inner each investing a ray ovary, forming a perigynium, shed with enclosed cypsela). <b>Receptacles</b> flat or convex to conic (their tips, paleae, and spent florets often shed as a unit), paleate (paleae lanceolate to linear, scarious, conduplicate, often with dilated, erose tips). <b>Ray</b> florets [3–]5–13+, pistillate, fertile; corollas yellow, orange, or cream-white, sometimes purplish abaxially (tubes often wanting). <b>Disc</b> florets [3–]45–70[–100+], functionally staminate; corollas ochroleucous, yellow, or orange, tubes shorter than funnelform throats, lobes 5, ± deltate. <b>Cypselae</b> each enclosed within and shed with a smooth, sculpted, or tuberculate, scarious, coriaceous, or hardened perigynium (the ultimate “fruits” ± compressed, ± D-shaped); pappi 0. <b>x</b> = 12.</span><!--

-->{{Treatment/Body
|distribution=United States;Mexico;West Indies;Central America;South America;introduced in Old World.
|discussion=<p>Species ca. 36 (7 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=stuessy1972a
|text=Stuessy, T. F. 1972. Revision of the genus Melampodium (Compositae: Heliantheae). Rhodora 74: 1–70, 161–219.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Perennials; ray corollas cream-white
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Annuals; ray corollas yellow to yellow-orange
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Outer phyllaries connate 1/2–3/5 their lengths; ray laminae 7–13 × 2.5–8 mm
|[[Melampodium leucanthum|Melampodium leucanthum]]
|-id=key-0-2
|2
|Outer phyllaries connate 1/6–1/3+ their lengths; ray laminae 2–8+ × 1–3+ mm
|[[Melampodium cinereum|Melampodium cinereum]]
|-id=key-0-3
|3
|Leaf blades deltate or rhombic to lanceolate, lengths 1–2(–3) times widths
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Leaf blades lance-elliptic or oblanceolate to linear, lengths (3–)4–8+ times widths
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Outer phyllaries ovate, 3.5–6 mm, connate 1/4–1/3 their lengths; disc florets 40–70+; fruits 2.8–4 mm
|[[Melampodium divaricatum|Melampodium divaricatum]]
|-id=key-0-4
|4
|Outer phyllaries oblong-elliptic, (6–)8–15+ mm, connate 0–1/6 their lengths; disc florets 30–45; fruits 4–7 mm
|[[Melampodium perfoliatum|Melampodium perfoliatum]]
|-id=key-0-5
|5
|Outer phyllaries connate 3/5–2/3 their lengths; disc florets 25–40
|[[Melampodium appendiculatum|Melampodium appendiculatum]]
|-id=key-0-5
|5
|Outer phyllaries connate 0–1/6 their lengths; disc florets 4–10
|[[#key-0-6| > 6]]
|-id=key-0-6
|6
|Peduncles 4–30+ mm; rays 7–12, laminae 1.2–1.5 mm; disc florets 8–10
|[[Melampodium longicorne|Melampodium longicorne]]
|-id=key-0-6
|6
|Peduncles 0–3(–12+) mm; rays 5–8, laminae 0.6–1.1 mm; disc florets 4–6
|[[Melampodium strigosum|Melampodium strigosum]]
|}
</div></div><!--

-->{{#Taxon:
name=Melampodium
|author=John L. Strother
|authority=Linnaeus
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=United States;Mexico;West Indies;Central America;South America;introduced in Old World.
|reference=stuessy1972a
|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/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_62.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Melampodiinae
|genus=Melampodium
}}<!--

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