View source for Paysonia

{{Treatment/ID
|accepted_name=Paysonia
|accepted_authority=O’Kane & Al-Shehbaz
|publications={{Treatment/Publication
|title=Novon
|place=12: 380. 2002
|year=2002
}}
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Physarieae;Paysonia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Physarieae]]</div><div class="higher-taxon"><small>genus</small>[[Paysonia]]</div></div>
|etymology=For Edwin Blake Payson, 1893–1927, American botanist and first monographer of Lesquerella
|volume=Volume 7
|mention_page=page 224, 236, 240, 604, 612, 617
|treatment_page=page 611
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism duration"><b>Annuals </b>or, rarely, biennials or perennials;</span> <span class="statement" id="st-d0_s1" data-properties="">not scapose;</span> <span class="statement" id="st-d0_s2" data-properties="whole-organism architecture;whole-organism pubescence;whole-organism pubescence;whole-organism duration;whole-organism architecture;whole-organism pubescence;whole-organism pubescence;whole-organism duration;trichome architecture;trichome shape;trichome architecture;trichome arrangement;one relief;one architecture">pubescent or glabrous, trichomes short-stalked, forked or subdendritic, often mixed with coarse, simple ones.</span> <span class="statement" id="st-d0_s3" data-properties="stem orientation;stem orientation;stem growth form;stem growth form;stem growth form;stem growth form;stem architecture;stem architecture"><b>Stems </b>erect, ascending, decumbent, or procumbent, unbranched or branched.</span> <span class="statement" id="st-d0_s4" data-properties=""><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s5" data-properties="leaf position;leaf position;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s6" data-properties="basal leaf arrangement;basal leaf architecture;blade margin architecture or shape;blade margin shape;blade margin shape;blade margin shape;blade margin shape">basal rosulate, petiolate, blade margins entire, dentate, or pinnately lobed;</span> <span class="statement" id="st-d0_s7" data-properties="cauline leaf architecture;margin shape">cauline sessile, blade (base usually auriculate or sagittate, sometimes amplexicaul), margins dentate to lobed.</span> <span class="statement" id="st-d0_s8" data-properties=""><b>Racemes </b>(several-flowered), often strongly elongated in fruit, (rachis straight).</span> <span class="statement" id="st-d0_s9" data-properties="raceme length;raceme orientation;raceme arrangement;raceme orientation;raceme size"><b>Fruiting </b>pedicels ascending to divaricate or recurved, (straight or slightly curved), slender.</span> <span class="statement" id="st-d0_s10" data-properties="flower orientation;flower orientation;flower orientation;flower orientation;flower orientation;flower shape;flower position;flower architecture or shape"><b>Flowers:</b> sepals (deciduous), suberect, ascending, or spreading, oblong, (equal), lateral pair not saccate basally, (margins membranous);</span> <span class="statement" id="st-d0_s11" data-properties="petal coloration;petal coloration;petal shape;claw variability">petals yellow or white, broadly obovate, claw slightly differentiated from blade, (apex rounded, truncate, retuse, or emarginate);</span> <span class="statement" id="st-d0_s12" data-properties="flower architecture">stamens (erect), tetradynamous;</span> <span class="statement" id="st-d0_s13" data-properties="filament shape;filament shape">filaments dilated or not basally;</span> <span class="statement" id="st-d0_s14" data-properties="anther shape;anther shape">anthers oblong or sagittate, (not apiculate);</span> <span class="statement" id="st-d0_s15" data-properties="nectar gland arrangement;lateral stamen position relational">nectar glands confluent, subtending bases of median stamens, surrounding lateral stamens.</span> <span class="statement" id="st-d0_s16" data-properties="fruits silicle architecture;fruits silicle architecture;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle shape;fruits silicle architecture;fruits silicle shape"><b>Fruits </b>silicles, subsessile or sessile, globose, subglobose, subpyriform, suborbicular, orbicular, elliptic, cordate, or obovoid, terete, flattened, latiseptate, or angustiseptate;</span> <span class="statement" id="st-d0_s17" data-properties="valve architecture;valve pubescence;valve pubescence">valves (papery or leathery), not veined, glabrous or pubescent, (trichomes branched and/or simple);</span> <span class="statement" id="st-d0_s18" data-properties="replum shape">replum not flattened;</span> <span class="statement" id="st-d0_s19" data-properties="septum architecture;septum architecture;septum size">septum complete, perforated, or reduced to a rim, (membranous);</span> <span class="statement" id="st-d0_s20" data-properties="ovule quantity">ovules 4–40 per ovary;</span> <span class="statement" id="st-d0_s21" data-properties="style fusion">style distinct, (persistent, slender);</span> <span class="statement" id="st-d0_s22" data-properties="stigma architecture or shape;stigma architecture or shape">stigma capitate, entire.</span> <span class="statement" id="st-d0_s23" data-properties="seed arrangement;seed shape;seed architecture;seed shape;seed shape;seed shape;seed shape;seed shape"><b>Seeds </b>sub-biseriate, flattened, margined, orbicular, suborbicular, or oval;</span> <span class="statement" id="st-d0_s24" data-properties="">cotyledons accumbent.</span> <span class="statement" id="st-d0_s25" data-properties="cotyledon arrangement;x chromosome quantity;x chromosome quantity;x chromosome quantity">x = 7, 8, 9.</span><!--

-->{{Treatment/Body
|distribution=sc;se United States;n Mexico
|discussion=<p>Species 8 (8 in the flora).</p><!--
--><p>Paysonia was segregated from Lesquerella (now Physaria) based on its different base chromosome number, presence of auriculate stem leaves, typically annual duration, trichomes that are neither stellate nor tuberculate, and phylogenetic analysis of DNA sequences. Some species of the genus have very limited distributions and are of conservation concern. Five (P. densipila, P. lescurii, P. lyrata, P. perforata, and P. stonensis) are known to be interfertile under experimental conditions, and some combinations form fertile hybrids in the field (R. C. Rollins 1988).</p>
|tables=
|references={{Treatment/Reference
|id=rollins1955a
|text=Rollins, R. C. 1955. The auriculate-leaved species of Lesquerella (Cruciferae). Rhodora 57: 241–264.
}}{{Treatment/Reference
|id=rollins1973a
|text=Rollins, R. C. and E. A. Shaw. 1973. The Genus Lesquerella (Cruciferae) in North America. Cambridge, Mass.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Fruits orbicular, elliptic, or cordate
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Fruits globose, subglobose, subpyriform, or obovoid
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Fruits angustiseptate; fruiting pedicels recurved; cauline leaf blades: base cuneate to auriculate, not amplexicaul; filaments not dilated basally.
|[[Paysonia lasiocarpa|Paysonia lasiocarpa]]
|-id=key-0-2
|2
|Fruits latiseptate; fruiting pedicels divaricate or nearly straight; cauline leaf blades: base auriculate to sagittate, sometimes amplexicaul; filaments dilated basally.
|[[Paysonia lescurii|Paysonia lescurii]]
|-id=key-0-3
|3
|Petals white or pale lavender; septums perforate or nearly absent
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Petals yellow; septums complete
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Fruits subpyriform, valves sparsely hirsute or glabrate; styles glabrous.
|[[Paysonia perforata|Paysonia perforata]]
|-id=key-0-4
|4
|Fruits subglobose, valves densely hirsute; styles hirsute, at least proximally.
|[[Paysonia stonensis|Paysonia stonensis]]
|-id=key-0-5
|5
|Fruit valves pubescent; styles glabrous or pubescent proximally.
|[[Paysonia densipila|Paysonia densipila]]
|-id=key-0-5
|5
|Fruit valves and styles glabrous
|[[#key-0-6| > 6]]
|-id=key-0-6
|6
|Fruits 3-4 mm; ovules 4-8 per ovary; septums opaque.
|[[Paysonia lyrata|Paysonia lyrata]]
|-id=key-0-6
|6
|Fruits 4-6(-8) mm; ovules (8-)12-28(-40) per ovary; septums translucent
|[[#key-0-7| > 7]]
|-id=key-0-7
|7
|Stems hirsute proximally, trichomes simple; petals 4-5 mm wide.
|[[Paysonia auriculata|Paysonia auriculata]]
|-id=key-0-7
|7
|Stems pubescent proximally, trichomes branched; petals 6-9 mm wide.
|[[Paysonia grandiflora|Paysonia grandiflora]]
|}
</div></div><!--

-->{{#Taxon:
name=Paysonia
|author=Steve L. O’Kane Jr.
|authority=O’Kane & Al-Shehbaz
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Brassicaceae
|distribution=sc;se United States;n Mexico
|reference=rollins1955a;rollins1973a
|publication title=Novon
|publication year=2002
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V7/V7_1000.xml
|tribe=Brassicaceae tribe Physarieae
|genus=Paysonia
|anther shape=sagittate;oblong
|basal leaf architecture=petiolate
|basal leaf arrangement=rosulate
|blade margin architecture or shape=entire
|blade margin shape=lobed;dentate;lobed;dentate
|cauline leaf architecture=sessile
|claw variability=differentiated
|cotyledon arrangement=accumbent
|filament shape=not basally;dilated
|flower architecture=tetradynamous
|flower architecture or shape=saccate
|flower orientation=spreading;ascending;spreading;ascending;suberect
|flower position=lateral
|flower shape=oblong
|fruits silicle architecture=latiseptate;sessile;subsessile
|fruits silicle shape=angustiseptate;flattened;terete;obovoid;cordate;obovoid;cordate;elliptic;orbicular;suborbicular;subpyriform;subglobose;globose
|lateral stamen position relational=surrounding
|leaf architecture=sessile;petiolate
|leaf position=cauline;basal
|margin shape=dentate;lobed
|nectar gland arrangement=confluent
|one architecture=simple
|one relief=coarse
|ovule quantity=4;40
|petal coloration=white;yellow
|petal shape=obovate
|raceme arrangement=divaricate
|raceme length=elongated
|raceme orientation=recurved;ascending
|raceme size=slender
|replum shape=not flattened
|seed architecture=margined
|seed arrangement=sub-biseriate
|seed shape=oval;suborbicular;oval;suborbicular;orbicular;flattened
|septum architecture=perforated;complete
|septum size=reduced
|stem architecture=branched;unbranched
|stem growth form=procumbent;decumbent;procumbent;decumbent
|stem orientation=ascending;erect
|stigma architecture or shape=entire;capitate
|style fusion=distinct
|trichome architecture=subdendritic;short-stalked
|trichome arrangement=mixed
|trichome shape=forked
|valve architecture=not veined
|valve pubescence=pubescent;glabrous
|whole-organism architecture=not scapose;not scapose
|whole-organism duration=perennial;biennial;annual
|whole-organism pubescence=glabrous;pubescent;glabrous;pubescent
|x chromosome quantity=9;8;7
}}<!--

-->[[Category:Treatment]][[Category:Brassicaceae tribe Physarieae]]