View source for Holozonia ← Holozonia 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=Holozonia |accepted_authority=Greene |publications={{Treatment/Publication |title=Bull Torrey Bot. Club |place=9: 122. 1882 |year=1882 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Madiinae;Holozonia |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 Madiinae]]</div><div class="higher-taxon"><small>genus</small>[[Holozonia]]</div></div> |etymology=Greek holos, whole or entire, and zona, belt or girdle; alluding to each phyllary fully (or mostly) investing a ray ovary (cypsela), in contrast to the half-invested cypselae of Hemizonia |volume=Volume 21 |mention_page=page 255 |treatment_page=page 294 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 30–150 cm (rhizomatous). <b>Stems</b> (aerial) ± erect. <b>Leaves</b> mostly cauline; proximal opposite (basally connate), distal alternate; sessile; blades lanceolate to linear, margins entire, faces hirsute and (distal leaves) glandular-hirtellous (glands cup-shaped). <b>Heads</b> radiate, borne singly or in loose, corymbiform arrays (peduncles filiform). <b>Peduncular</b> bracts: pit-glands, tack-glands, and/or spines 0. <b>Involucres</b> ± obconic or turbinate, 2–4+ mm diam. <b>Receptacles</b> flat to convex, glabrous or setulose, paleate (paleae falling, in 1 series between rays and discs, connate). <b>Phyllaries</b> 4–10 in 1 series (each mostly or wholly enveloping a ray ovary, ± lance-linear, herbaceous, abaxially hirsute, sometimes glandular-hirtellous, glands cup-shaped). <b>Ray</b> florets 4–10, pistillate, fertile; corollas whitish (abaxially purplish-veined). <b>Disc</b> florets 9–28, functionally staminate; corollas white (pubescent), tubes shorter than funnelform throats, lobes 5, deltate (anthers ± dark purple; styles glabrous proximal to branches). <b>Cypselae</b> (black) obcompressed, ± clavate (basal attachments centered, apices beakless, areolae broadly cupulate, faces glabrous); pappi (rays) 0 or coroniform (0.1–0.3 mm), or (discs) 0 or (readily falling) of 1–5 subulate scales. <b>x</b> = 14.</span><!-- -->{{Treatment/Body |distribution=Calif. |discussion=<p>Species 1.</p><!-- --><p><i>Holozonia</i> has been treated as congeneric with <i>Hemizonia</i> and with <i>Lagophylla</i>. Like <i>Lagophylla</i>, <i>Holozonia</i> has functionally staminate disc florets, cup-shaped glands, and obcompressed cypselae, each completely or mostly invested by a phyllary. Additional morphologic considerations and biosystematic studies led W. C. Thompson (1983) to reject the hypothesis of a close relationship between <i>Holozonia</i> and <i>Lagophylla</i>. Molecular phylogenetic data are in keeping with a closer relationship of <i>Holozonia</i> to other continental tarweeds with white corollas and x = 14 (i.e., <i>Blepharizonia</i> and <i>Hemizonia</i>), than to <i>Lagophylla</i> (S. Carlquist et al. 2003).</p> |tables= |references={{Treatment/Reference |id=thompson1983a |text=Thompson, W. C. 1983. A Biosystematic Study of Lagophylla (Compositae: Heliantheae) and Related Taxa. Ph.D. dissertation. University of California, Davis. }} }}<!-- --><!-- -->{{#Taxon: name=Holozonia |author=Bruce G. Baldwin;John L. Strother |authority=Greene |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |distribution=Calif. |reference=thompson1983a |publication title=Bull Torrey Bot. Club |publication year=1882 |special status= |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_721.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae |genus=Holozonia }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Madiinae]] 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 Holozonia.