View source for Perityle ← Perityle 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=Perityle |accepted_authority=Bentham |publications={{Treatment/Publication |title=Bot. Voy. Sulphur, |place=23, plate 15. 1844 |year=1844 }} |common_names=Rock daisy |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Peritylinae;Perityle |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 Peritylinae]]</div><div class="higher-taxon"><small>genus</small>[[Perityle]]</div></div> |etymology=Greek peri, around, and tyle, a callus, alluding to calloused cypselae margins |volume=Volume 21 |mention_page=page 333, 334 |treatment_page=page 317 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> perennials, subshrubs, or shrubs, 2–45(–75) cm (glabrous or hairy, often gland-dotted). <b>Stems</b> erect to pendent. <b>Leaves</b> mostly cauline; often proximally opposite, distally alternate; petiolate or sessile; blades usually 3-lobed, ultimate margins entire, toothed, or lobed. <b>Heads</b> radiate or discoid, borne singly or in corymbiform arrays. <b>Involucres</b> campanulate, cylindric, funnelform, or hemispheric, 3–15 mm diam. <b>Phyllaries</b> persistent, 5–28 in (1–)2(–3) series (distinct, linear to ovate, equal or subequal, flat or keeled, glabrous or hairy, apices obtuse, acute, or attenuate). <b>Receptacles</b> flat or convex, pitted, epaleate. <b>Ray</b> florets 0, or (1–)3–18, pistillate, fertile; corollas cream, yellow, or white (showy or rudimentary). <b>Disc</b> florets 5–200, bisexual, fertile; corollas cream, yellow, or white, tubes shorter than or nearly equal to cylindric, funnelform, or campanulate throats, lobes 4, ± deltate (acute; stamens 4; style branches flattened, linear, usually tapering to fine, minutely hairy tips). <b>Cypselae</b> (black) flattened to subcylindric, linear to oblanceolate or obovate (margins ± calloused and glabrous, hairy, or ciliate, faces usually hairy, sometimes glabrous); pappi 0, or persistent or falling, of 1–35 bristles plus callous crowns or hyaline scales. <b>x</b> = 17, 19.</span><!-- -->{{Treatment/Body |distribution=United States;Mexico;South America. |discussion=<p>Species 66 (35 in the flora).</p><!-- --><p>Most species of <i>Perityle</i> are rock-dwelling subshrubs exhibiting geographic speciation; most are found in the eroded mountain and basin region of the southwestern United States.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Pappi (disc florets) usually each of 8–35 unequal, antrorsely barbellulate bristles 0.5–3.5 mm (in P. vitreomontana all but 2–3 may be reduced to vestigial nubs); New Mexico, Texas |[[Perityle sect. Pappothrix|Perityle sect. Pappothrix]] |-id=key-0-1 |1 |Pappi (disc florets) 0, or of 1–2(–6) bristles, sometimes plus callous crowns or scales; Arizona, California, Nevada, New Mexico, Texas, and Utah |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Pappi (disc florets) 0, or of 1–2(–3) unequal to subequal, ± barbellate bristles 0.5–4(–6) mm plus hyaline, laciniate scales; margins of cypselae usually densely ciliate |[[Perityle sect. Perityle|Perityle sect. Perityle]] |-id=key-0-2 |2 |Pappi (disc florets) 0, or of 1–2(–6) equal or subequal, antrorsely barbellulate or subplumose bristles 0.5–4.6 mm plus callous crowns or hyaline scales; margins of cypselae usually sparsely short-hairy |[[Perityle sect. Laphamia|Perityle sect. Laphamia]] |} </div></div><!-- -->{{#Taxon: name=Perityle |author=Sharon C. Yarborough;A. Michael Powell |authority=Bentham |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Bee F. Gunn |illustration copyright=Flora of North America Association |distribution=United States;Mexico;South America. |reference=None |publication title=Bot. Voy. Sulphur, |publication year=1844 |special status= |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_784.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae |genus=Perityle }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Peritylinae]] 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) Return to Perityle.