View source for Flaveria ← Flaveria 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=Flaveria |accepted_authority=Jussieu |publications={{Treatment/Publication |title=Gen. Pl., |place=186. 1789 |year=1789 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Flaveriinae;Flaveria |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 Flaveriinae]]</div><div class="higher-taxon"><small>genus</small>[[Flaveria]]</div></div> |etymology=Latin flavus, yellow |volume=Volume 21 |mention_page=page 245, 248, 249, 250 |treatment_page=page 247 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> perennials, or subshrubs, to 200+ cm [trees to 400 cm] (usually ± succulent, herbage usually glaucous). <b>Stems</b> (often purplish) erect or decumbent, branched distally or ± throughout. <b>Leaves</b> cauline; opposite (decussate); petiolate or sessile (weakly connate to connate-perfoliate); blades (often 3-nerved) oblong-ovate to lanceolate or linear, margins entire, serrate, or spinulose-serrate, faces glabrous or short-pubescent. <b>Heads</b> radiate or discoid, usually in tight or loose aggregations in (often flat-topped) ± corymbiform arrays or glomerules. <b>Involucres</b> oblong, urceolate, cylindric, or turbinate, 0.5–2 mm diam. <b>Phyllaries</b> persistent, 2–6(–9) in ± 1 series (linear, concave, or boat-shaped, subequal). <b>Receptacles</b> convex, epaleate (“receptacles” of glomerules sometimes setose). <b>Ray</b> florets 0–1(–2), pistillate, fertile; corollas yellow or whitish (laminae inconspicuous). <b>Disc</b> florets 1–15, bisexual, fertile; corollas yellow, tubes shorter than to about equaling funnelform to campanulate throats, lobes 5, ± deltate. <b>Cypselae</b> (black) weakly compressed, narrowly oblanceolate or linear-oblong (usually 10-nerved, glabrous); pappi usually 0, sometimes persistent, of 2–4 hyaline scales, or coroniform (of connate scales). <b>x</b> = 18.</span><!-- -->{{Treatment/Body |distribution=United States;Mexico;West Indies (Greater Antilles);Central America;South America;Asia (India);Africa;Australia. |discussion=<p>Species 21 (8 in the flora).</p><!-- --><p>Members of <i>Flaveria</i> are frequently found in alkaline, saline, and gypseous soils, often in disturbed and moist areas. Heads of <i>Flaveria</i> may be either radiate or discoid; when both are present in the same capitulescence, the discoid heads tend to be central and the radiate heads peripheral. Many species of <i>Flaveria</i> have persistent sheathing leaf bases that ring the stems after the leaves have fallen.</p><!-- --><p><i>Flaveria</i> is notable because certain species exhibit C3 photosynthesis, some C3–C4 (intermediate) photosynthesis, and others (<i>F. brownii</i>, <i>F. bidentis</i>, <i>F. campestris</i>, and <i>F. trinervia</i> in the United States) classic C4 photosynthesis.</p> |tables= |references={{Treatment/Reference |id=powell1978a |text=Powell, A. M. 1978. Systematics of Flaveria (Flaveriinae–Asteraceae). Ann. Missouri Bot. Gard. 65: 590–636. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Pappi usually of 2–4 scales or coroniform, rarely 0 |[[#key-0-2| > 2]] |-id=key-0-1 |1 |Pappi 0 |[[#key-0-3| > 3]] |-id=key-0-2 |2 |Leaf blades to 10–40 mm wide, bases connate-perfoliate; New Mexico, Texas |[[Flaveria chlorifolia|Flaveria chlorifolia]] |-id=key-0-2 |2 |Leaf blades 2–7 mm wide, bases weakly connate; Arizona |[[Flaveria mcdougallii|Flaveria mcdougallii]] |-id=key-0-3 |3 |Heads in tight, axillary glomerules ("receptacles" of glomerules setose) |[[Flaveria trinervia|Flaveria trinervia]] |-id=key-0-3 |3 |Heads usually in corymbiform, paniculiform, or spiciform arrays, seldom in tight, axillary glomerules ("receptacles" of glomerules not setose). |[[#key-0-4| > 4]] |-id=key-0-4 |4 |Annuals |[[#key-0-5| > 5]] |-id=key-0-4 |4 |Perennials (annuals) |[[#key-0-6| > 6]] |-id=key-0-5 |5 |Heads in scorpioid cymiform arrays; ray laminae to 1 mm; Alabama, Florida, Georgia |[[Flaveria bidentis|Flaveria bidentis]] |-id=key-0-5 |5 |Heads in corymbiform arrays; ray laminae 1.5–2.5 mm; sc, sw United States |[[Flaveria campestris|Flaveria campestris]] |-id=key-0-6 |6 |Calyculus bractlets surpassing involucres (sw coast, Florida) |[[Flaveria floridana|Flaveria floridana]] |-id=key-0-6 |6 |Calyculus bractlets shorter than involucres |[[#key-0-7| > 7]] |-id=key-0-7 |7 |Ray laminae oblong-elliptic, 2 mm; disc florets (5–)7–10; Texas |[[Flaveria brownii|Flaveria brownii]] |-id=key-0-7 |7 |Ray laminae oval to obovate-spatulate, 2–3 mm; disc florets (2–)5–7(–8); Florida |[[Flaveria linearis|Flaveria linearis]] |} </div></div><!-- -->{{#Taxon: name=Flaveria |author=Sharon C. Yarborough;A. Michael Powell |authority=Jussieu |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Barbara Alongi |illustration copyright=Flora of North America Association |distribution=United States;Mexico;West Indies (Greater Antilles);Central America;South America;Asia (India);Africa;Australia. |reference=powell1978a |publication title=Gen. Pl., |publication year=1789 |special status= |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_612.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Flaveriinae |genus=Flaveria }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Flaveriinae]] 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 Flaveria.