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-d0_s0" data-properties="whole-organism some measurement;whole-organism duration"><b>Perennials,</b> 30–150 cm (rhizomatous).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation"><b>Stems </b>(aerial) ± erect.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position"><b>Leaves </b>mostly cauline;</span> <span class="statement" id="st-d0_s3" data-properties="proximal leaf arrangement">proximal opposite (basally connate), distal alternate;</span> <span class="statement" id="st-d0_s4" data-properties="distal leaf arrangement;distal leaf architecture">sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;margin architecture or shape;face pubescence;face pubescence">blades lanceolate to linear, margins entire, faces hirsute and (distal leaves) glandular-hirtellous (glands cupshaped).</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or arrangement;head arrangement;head arrangement;array architecture or fragility;array architecture"><b>Heads </b>radiate, borne singly or in loose, corymbiform arrays (peduncles filiform).</span> <span class="statement" id="st-d0_s7" data-properties="spine presence"><b>Peduncular </b>bracts: pit-glands, tack-glands, and/or spines 0.</span> <span class="statement" id="st-d0_s8" data-properties="involucre shape;involucre shape;involucre diameter"><b>Involucres </b>± obconic or turbinate, 2–4+ mm diam.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle pubescence;receptacle pubescence;receptacle architecture"><b>Receptacles </b>flat to convex, glabrous or setulose, paleate (paleae falling, in 1 series between rays and discs, connate).</span> <span class="statement" id="st-d0_s10" data-properties="phyllary quantity;series quantity"><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 cupshaped).</span> <span class="statement" id="st-d0_s11" data-properties="ray-floret quantity;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets 4–10, pistillate, fertile;</span> <span class="statement" id="st-d0_s12" data-properties="corolla coloration">corollas whitish (abaxially purplish-veined).</span> <span class="statement" id="st-d0_s13" data-properties="disc-floret quantity;disc-floret architecture"><b>Disc-</b>florets 9–28, functionally staminate;</span> <span class="statement" id="st-d0_s14" data-properties="corolla coloration;tube height or length or size;lobe quantity;lobe shape">corollas white (pubescent), tubes shorter than funnelform throats, lobes 5, deltate (anthers ± dark purple; styles glabrous proximal to branches).</span> <span class="statement" id="st-d0_s15" data-properties="cypsela shape;cypsela shape"><b>Cypselae </b>(black) obcompressed, ± clavate (basal attachments centered, apices beakless, areolae broadly cupulate, faces glabrous);</span> <span class="statement" id="st-d0_s16" data-properties="scale quantity;scale shape">pappi (rays) 0 or coroniform (0.1–0.3 mm), or (discs) 0 or (readily falling) of 1–5 subulate scales.</span> <span class="statement" id="st-d0_s17" data-properties="pappus presence;pappus shape;pappus presence;pappus quantity;x chromosome quantity">x = 14.</span><!-- -->{{Treatment/Body |distribution=Calif. |discussion=<p>Species 1.</p><!-- --><p>Holozonia has been treated as congeneric with Hemizonia and with Lagophylla. Like Lagophylla, Holozonia 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 Holozonia and Lagophylla. Molecular phylogenetic data are in keeping with a closer relationship of Holozonia to other continental tarweeds with white corollas and x = 14 (i.e., Blepharizonia and Hemizonia), than to Lagophylla (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://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_721.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Madiinae |genus=Holozonia |array architecture=corymbiform |array architecture or fragility=loose |blade shape=lanceolate;linear |corolla coloration=white;whitish |cypsela shape=clavate;obcompressed |disc-floret architecture=staminate |disc-floret quantity=9;28 |distal leaf architecture=sessile |distal leaf arrangement=alternate |face pubescence=glandular-hirtellous;hirsute |head architecture or arrangement=radiate |head arrangement=in loose , corymbiform arrays;singly |involucre diameter=2mm;4mm |involucre shape=turbinate;obconic |leaf position=cauline |lobe quantity=5 |lobe shape=deltate |margin architecture or shape=entire |pappus presence=absent;absent |pappus quantity=of 1;5 subulate scales |pappus shape=coroniform |phyllary quantity=4;10 |proximal leaf arrangement=opposite |ray-floret architecture=pistillate |ray-floret quantity=4;10 |ray-floret reproduction=fertile |receptacle architecture=paleate |receptacle pubescence=setulose;glabrous |receptacle shape=flat;convex |scale quantity=1;5 |scale shape=subulate |series quantity=1 |spine presence=absent |stem orientation=erect |tube height or length or size=shorter |whole-organism duration=perennial |whole-organism some measurement=30cm;150cm |x chromosome quantity=14 }}<!-- -->[[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.