View source for Kelseya ← Kelseya 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=Kelseya |accepted_authority=Rydberg |publications={{Treatment/Publication |title=in N. L. Britton et al., N. Amer. Fl. |place=22: 254. 1908 |year=1908 }} |special_status={{Treatment/ID/Special_status |code=E |label=Endemic }} |basionyms= |synonyms= |hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Spiraeeae;Kelseya |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Amygdaloideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Spiraeeae]]</div><div class="higher-taxon"><small>genus</small>[[Kelseya]]</div></div> |etymology=For Francis Duncan Kelsey, 1849 – 1905 Montana Botanist |volume=Volume 9 |mention_page=page 398, 412, 415, 422 |treatment_page=page 414 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> densely cespitose, pulvinate, mat-forming, 0.3–1 dm; caudices woody. <b>Stems</b> 1–20+, semierect to prostrate and decumbent with very short internodes, densely, intricately branched, leafy; bark brown to gray or dark gray in age; short shoots usually present, long shoots rarely present; glabrous. <b>Leaves</b> persistent, cauline, alternate, tightly crowded and imbricate, simple; petiole absent; blade oblanceolate to spatulate-obovate, 0.2–0.4 cm, coriaceous, margins flat, entire, venation not visible, surfaces sericeous. <b>Inflorescences</b> terminal or pseudoterminal, flowers solitary, hirsute to villous; bracts absent; bracteoles absent. <b>Pedicels</b> absent. <b>Flowers</b> 3–6(–8) mm diam.; epicalyx bractlets 0; hypanthium hemispheric, 1–2 mm, sericeous; sepals 5, erect to slightly reflexed, oblanceolate; petals 5, pink to pinkish, often purple tinged, elliptic to oblong; stamens 7–12, slightly longer than petals; torus annular to weakly developed and inconspicuous; carpels 3 or 4(or 5), free, glabrous or glabrate, sparsely villous on adaxial margin, styles terminal, adherent to hypanthium; ovules 3–5. <b>Fruits</b> aggregated follicles, 3–5, ellipsoid, 2–3 mm, glabrate or sparsely hirsute, sparsely villous on adaxial margin; hypanthium persistent; sepals persistent, erect to slightly reflexed; styles deciduous. <b>Seeds</b> 1 or 2(–4), elongate, fusiform. <b>x</b> = 9.</span><!-- -->{{Treatment/Body |distribution=nw United States. |discussion=<p>Species 1.</p><!-- --><p>The phylogenetic work on the <i>Rosaceae</i> by D. Potter et al. (2007) and the nucleotide sequence data analysis of the Spiraeeae by Potter et al. (2007b) identified a clade containing <i>Kelseya</i>, <i>Petrophytum</i>, and <i>Spiraea</i>. A cladistic and numerical taxonomic study using morphologic characters ascertained that <i>Kelseya</i> and <i>Petrophytum</i> were nearest neighbors (J. Henrickson 1985). The work of Potter et al. (2007b) suggested that the reduced growth habit in the Spiraeeae evolved at least twice. The carpels of <i>Kelseya</i> are adherent to the hypanthium and each has an independent vascular supply of three bundles per carpel (C. Sterling 1966). Using <i>Spiraea</i> trilobata as a model (R. C. Evans and T. A. Dickinson 1999b) for gynoecial development in <i>Kelseya</i>, the five primordia are initiated separately and grow independently, yet simultaneously, with the intercalary growth of the hypanthium that occurs between the point of insertion of the perianth and the androecium. As the carpels of <i>Kelseya</i> mature, they become adherent to the hypanthium (Sterling); the carpels of <i>S. trilobata</i> remain free from the hypanthium (Evans and Dickinson). In contrast, in the Maloideae (J. R. Rohrer et al. 1991, 1994) and in <i>Sorbaria</i> and <i>Vauquelinia</i> (Evans and Dickinson), the region of hypanthial intercalary growth extends proximally from the gynoecium, and as the hypanthium and carpels develop, the abaxial margins of the carpels become adnate to the growing hypanthium. The adherence of the carpels displayed by <i>Kelseya</i>, found more typically in other genera of Pyreae and Amygdaleae, appears to be an unusual morphological feature that may be a result of the reduction in plant stature and habit possibly associated with its xeric alpine habitat.</p> |tables= |references= }}<!-- --><!-- -->{{#Taxon: name=Kelseya |author=Richard Lis |authority=Rydberg |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Rosaceae |distribution=nw United States. |reference=None |publication title=in N. L. Britton et al., N. Amer. Fl. |publication year=1908 |special status=Endemic |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_700.xml |subfamily=Rosaceae subfam. Amygdaloideae |tribe=Rosaceae tribe Spiraeeae |genus=Kelseya }}<!-- -->[[Category:Treatment]][[Category:Rosaceae tribe Spiraeeae]] Templates used on this page: Template:Rosaceae (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/ID/Special status (view source) Template:Treatment/Publication (view source) Return to Kelseya.