View source for Roldana

{{Treatment/ID
|accepted_name=Roldana
|accepted_authority=La Llave in P. de La Llave and J. M. de Lexarza
|publications={{Treatment/Publication
|title=in P. de La Llave and J. M. de Lexarza, Nov. Veg. Descr.
|place=2: 10. 1825
|year=1825
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Roldana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Roldana]]</div></div>
|etymology=For Eugenio Montaña y Roldan Otumbensi, who evidently was heroic in a battle on the plains of Apam
|volume=Volume 20
|mention_page=page 542
|treatment_page=page 620
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>or subshrubs [shrubs, or trees], [20–]60–100(–300)[–800] cm (caudices woody, fibrous-rooted, often woolly). <b>Stems</b> single or clustered, erect (glabrous or arachnose and glabrescent [tomentose to lanate]). <b>Leaves</b> mostly cauline (at flowering); alternate; petiolate; blades pinnati-palmately [pinnately or palmately] nerved, suborbiculate (proximal) to ovate or oblong (distal) [deltate, elliptic, lanceolate, orbiculate, or ovate], sinuately to angularly lobed (± polygonal) [palmately, pinnately, or not lobed], ultimate margins serrate to denticulate (lobes and denticles apiculate) or entire, abaxial faces glabrous or arachnose [tomentose to lanate] and glabrate, adaxial glabrous or glabrate [tomentose to lanate]. <b>Heads</b> radiate [disciform or discoid], in corymbiform or paniculiform arrays (peduncles usually arachnose). <b>Calyculi</b> 0 or of 1–3(–5)[–13+] (linear [filiform to foliaceous]) bractlets. <b>Involucres</b> campanulate [hemispheric to cylindric or funnelform], 3–5[–20+] mm diam. <b>Phyllaries</b> persistent, (5–)8–13+ in 2 series, erect, distinct, lanceolate or lance-linear to linear (± navicular), equal, margins ± scarious. <b>Receptacles</b> flat, alveolate (margins of sockets raggedly toothed), epaleate. <b>Ray</b> florets [0 or 3–]5–8, pistillate, fertile; corollas yellow or yellow-orange [whitish or ochroleucous] (laminae usually oblong to elliptic). <b>Disc</b> florets 6–30[–100+], bisexual, fertile; corollas yellow or yellow-orange [whitish or ochroleucous], tubes shorter to longer than funnelform to campanulate throats, lobes 5, recurved, deltate to lance-ovate; style branches: stigmatic areas continuous, apices rounded-truncate. <b>Cypselae</b> ± columnar, [5- or] 10-ribbed, puberulent (between ribs) [glabrous]; pappi persistent (fragile), of 40–80+, white, barbellulate bristles in 1 series. <b>x</b> = 30.</span><!--

-->{{Treatment/Body
|distribution=sw United States;Mexico;Central America.
|discussion=<p>Species ca. 50 (1 in the flora).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Roldana
|author=A. Michele Funston
|authority=La Llave in P. de La Llave and J. M. de Lexarza
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=sw United States;Mexico;Central America.
|reference=None
|publication title=in P. de La Llave and J. M. de Lexarza, Nov. Veg. Descr.
|publication year=1825
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_1391.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Roldana
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Senecioneae]]