View source for Jovibarba ← Jovibarba 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=Jovibarba |accepted_authority=(de Candolle) Opiz |publications={{Treatment/Publication |title=Seznam, |place=54. 1852 , }} |common_names=Hen-and-chickens or;chicks |basionyms= |synonyms= |hierarchy=Crassulaceae;Jovibarba |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Crassulaceae]]</div><div class="higher-taxon"><small>genus</small>[[Jovibarba]]</div></div> |etymology=Latin Jovis, Jupiter, and barba, beard, alluding to fringed petals |volume=Volume 8 |mention_page=page 147, 149 |treatment_page=page 170 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, monocarpic, not viviparous, 0.8–2.5 dm, glabrous. <b>Stems</b> erect, (compressed), not branched, succulent. <b>Leaves</b> persistent, forming basal rosette, alternate, sessile, not connate basally; blade oblong to obovate, laminar, 2–4(–6) cm, succulent, base not spurred, margins entire, sometimes ciliate; veins not conspicuous. <b>Inflorescences</b> terminal cymes. <b>Pedicels</b> absent or to 1 mm. <b>Flowers</b> erect, 6–7-merous; sepals connate basally, all alike; petals erect, distinct, greenish white or greenish yellow to yellow, margins fimbrillate; calyx and corolla not circumscissile in fruit; nectary disc quadrate; stamens 2 times as many as sepals; filaments not adnate to petals; pistils erect, connate; ovary base rounded; styles 4–5 times shorter than ovary. <b>Fruits</b> capsular, erect, composed of basally connate pistils. <b>Seeds</b> (brown), ellipsoid, ribbed. <b>x</b> = 19.</span><!-- -->{{Treatment/Body |distribution=Wis.;Europe;Asia. |introduced=true |discussion=<p><i>Sempervivum</i> Linnaeus sect. <i>Jovibarba</i> de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 3: 413. 1828</p><!-- --><p>Species 3 (1 in the flora).</p><!-- --><p>Segregation of <i>Jovibarba</i> from <i>Sempervivum</i> has been problematic and uncertain for over a century. The uncertainty has centered upon whether <i>Jovibarba</i> should be treated as a section of <i>Sempervivum</i> or as a genus. Recent work has shown that the two are closely related (M. E. Mort et al. 2001). J. Parnell and C. Favarger (1992) maintained <i>Jovibarba</i> at the generic level; H. ’t Hart et al. (2003) treated it at sectional rank within <i>Sempervivum</i>. R. C. H. J. van Ham and ’t Hart (1998) did not include any accessions of <i>Jovibarba</i> in their study of the Crassulaceae using chloroplast DNA.</p><!-- --><p>Taxa assigned to <i>Jovibarba</i> generally have been segregated from <i>Sempervivum</i> based on: (1) the erect petals in <i>Jovibarba</i> versus reflexed petals in <i>Sempervivum</i>; (2) 6(–7)-merous flowers in <i>Jovibarba</i> versus 8–16-merous flowers in <i>Sempervivum</i>; (3) fimbrillate petals in <i>Jovibarba</i> versus entire petals in <i>Sempervivum</i>. J. Parnell (1991) examined pollen morphology and ultrastructure and found significant differences between <i>Jovibarba</i> and <i>Sempervivum</i> and concluded that these palynological differences supported retention of <i>Jovibarba</i> at the generic level. H. ’t Hart et al. (2003) discussed their decision to submerge <i>Jovibarba</i> into <i>Sempervivum</i> and discounted the floral morphology differences as being insignificant relative to similarities. They did not discuss, or cite, the palynological differences presented by Parnell, which are congruent with the character-state differences in floral morphology, and support segregation of <i>Jovibarba</i> from <i>Sempervivum</i>.</p> |tables= |references= }}<!-- --><!-- -->{{#Taxon: name=Jovibarba |author=Richard A. Lis |authority=(de Candolle) Opiz |rank=genus |parent rank=family |synonyms= |basionyms= |family=Crassulaceae |distribution=Wis.;Europe;Asia. |introduced=true |reference=None |publication title=Seznam, |publication year= |special status= |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V8/V8_342.xml |genus=Jovibarba }}<!-- -->[[Category:Treatment]][[Category:Crassulaceae]] Templates used on this page: Template:Crassulaceae (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 Jovibarba.