View source for Ratibida ← Ratibida You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Ratibida |accepted_authority=Rafinesque |publications={{Treatment/Publication |title=Fl. Ludov., |place=73. 1817 |year=1817 }} |common_names=Prairie coneflower;Mexican-hat |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae;Ratibida |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 Rudbeckiinae]]</div><div class="higher-taxon"><small>genus</small>[[Ratibida]]</div></div> |etymology=Derivation unknown |volume=Volume 21 |mention_page=page 43 |treatment_page=page 60 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 15–120 cm. <b>Stems</b> 1–12+, erect, branched from bases, throughout, or only among heads, strigoso-hirsute, gland-dotted. <b>Leaves</b> basal and cauline; alternate; petiolate (petioles relatively shorter distally); blades lanceolate to ovate or oblanceolate to obovate or oblong, pinnately lobed to 1–2-pinnatifid (lobes usually rounded), ultimate margins entire or serrate, faces usually strigoso-hirsute, usually gland-dotted. <b>Heads</b> radiate, borne singly or in loose, corymbiform arrays. <b>Involucres</b> ± rotate, 8–16 mm diam. <b>Phyllaries</b> persistent, 5–15 in 2 series (usually reflexed in fruit, unequal, outer longer). <b>Receptacles</b> subspheric to columnar, paleate (paleae conduplicate, linear to oblong-oblique, chartaceous proximally, herbaceous distally, apices truncate, usually densely strigose and gland-dotted, each margin usually with an adaxial resin gland; receptacles plus paleae and florets = discs, 5–70 × 5–18 mm). <b>Ray</b> florets 3–15+, neuter; corollas yellow, bicolor (maroon/yellow), or wholly maroon. <b>Disc</b> florets 50–400+, bisexual, fertile; corollas yellowish green, often purplish distally, tubes shorter than cylindric throats, lobes 5, obovate to triangular (gland-dotted and, sometimes, hairy abaxially). <b>Cypselae</b> (black) strongly compressed, linear-oblanceolate to oblong-oblique, margins (at least abaxial) usually ciliate or pectinate-fimbriate, apices truncate and, often, ciliate, faces glabrous or sparsely hairy; pappi of 1–2 toothlike projections, or coroniform, or 0. <b>x</b> = 16.</span><!-- -->{{Treatment/Body |distribution=North America;Mexico. |discussion=<p>Species 7 (4 in flora).</p> |tables= |references={{Treatment/Reference |id=jackson1963a |text=Jackson, S. W. 1963. Hybridization among three species of Ratibida. Univ. Kansas Sci. Bull. 44: 3–27. }}{{Treatment/Reference |id=richards1968a |text=Richards, E. L. 1968. A monograph of the genus Ratibida. Rhodora 70: 348–393. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Plants taprooted; leaves 2-pinnately lobed; peduncles to 6.5 cm (ribs not prominent; heads held just beyond leaves); discs subspheric to ovoid, 5–15 mm; pappi coroniform (of connatescales 0.2–1.5 mm) |[[Ratibida tagetes|Ratibida tagetes]] |-id=key-0-1 |1 |Plants fibrous rooted or taprooted; leaves 1–2-pinnatifid or -pinnately lobed; peduncles (1.5–)6.5–48+ cm (ribs tan; heads held well beyond leaves); discs columnar, ellipsoid-globular, or ovoid, 10–70 mm; pappi 0, or of 1–2 toothlike projections |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Plants fibrous rooted; discs ellipsoid to globular or ovoid, 10–25 mm; pappi 0, or of 1–2 toothlike projections |[[Ratibida pinnata|Ratibida pinnata]] |-id=key-0-2 |2 |Plants taprooted; discs columnar, 10–70 mm; pappi usually of 1–2 toothlike projections, sometimes 0 |[[#key-0-3| > 3]] |-id=key-0-3 |3 |Style branches ca. 1.8 mm, proximal 1/2 stigmatic, apices subulate; cypselae: abaxial margins narrowly winged to fimbriate or pectinate-fimbriate, adaxial margins pectinate-fimbriate |[[Ratibida peduncularis|Ratibida peduncularis]] |-id=key-0-3 |3 |Style branches 1–2.5 mm, proximal 2/3–3/4 stigmatic, apices rounded; cypselae: abaxial margins glabrous, adaxial margins glabrous or ciliate |[[Ratibida columnifera|Ratibida columnifera]] |} </div></div><!-- -->{{#Taxon: name=Ratibida |author=Lowell E. Urbatsch;Patricia B. Cox |authority=Rafinesque |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |distribution=North America;Mexico. |reference=jackson1963a;richards1968a |publication title=Fl. Ludov., |publication year=1817 |special status= |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_134.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae |genus=Ratibida }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae]] Templates used on this page: Template:Asteraceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Template:Treatment/Reference (view source) Return to Ratibida.