View source for Selenia

{{Treatment/ID
|accepted_name=Selenia
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=J. Acad. Nat. Sci. Philadelphia
|place=5: 132, plate 6. 1825
|year=1825
}}
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Cardamineae;Selenia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Cardamineae]]</div><div class="higher-taxon"><small>genus</small>[[Selenia]]</div></div>
|etymology=Greek selene, moon, alluding to resemblance to Lunaria
|volume=Volume 7
|mention_page=page 231, 239, 458, 486
|treatment_page=page 506
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>(sometimes winter); not scapose; glabrous. <b>Stems</b> (rarely absent, base of plant forming inflated crown), erect, ascending, subdecumbent, or decumbent, unbranched or branched distally. <b>Leaves</b> basal and cauline; petiolate or subsessile; basal rosulate or not, petiolate, blade margins 1- or 2- (or 3-)pinnatisect, (terminal lobe margin entire or dentate); cauline sessile [subsessile], blade (base not auriculate), margins similar to basal. <b>Racemes</b> (sometimes pedicels originating between basal leaves, bracteate throughout, rachis straight), considerably elongated in fruit. <b>Fruiting</b> pedicels divaricate to ascending, slender. <b>Flowers</b>: sepals (sometimes persistent), erect, spreading, or ascending, (yellowish), oblong, oblong-linear or -lanceolate, lateral pair slightly saccate basally; petals yellow, spatulate to broadly obovate, claw differentiated from blade, (apex rounded or emarginate [obtuse]); stamens tetradynamous; filaments not dilated basally; anthers linear, ovate, or oblong [sagittate]; nectar glands confluent (extending into spreading teeth). <b>Fruits</b> silicles, sessile or shortly stipitate, usually oblong, elliptical, suborbicular, or globose, rarely obovoid, smooth, latiseptate, terete, or slightly inflated; valves (vesicular in <i>S. grandis</i>, thin-papery to leathery), each without midvein, obscurely to prominently reticulate-veined; replum rounded or flattened; septum complete or perforated; ovules 8–44 per ovary; style distinct, (1–12 mm, sometimes flattened basally); stigma capitate. <b>Seeds</b> biseriate, flattened, winged throughout, orbicular; seed coat (coarsely reticulate), not mucilaginous when wetted; cotyledons accumbent. <b>x</b> = 7, 12, 13.</span><!--

-->{{Treatment/Body
|distribution=c;sw United States;ne Mexico.
|discussion=<p>Species 5 (4 in the flora).</p><!--
--><p>Species of <i>Selenia</i> might be difficult to separate when the plants are only in flower. <i>Selenia aurea</i> is easily distinguished by its 1-pinnatisect leaves and absence of flowers from the base of the plant. The remaining three species have 2- or 3-pinnatisect leaves and at least some pedicels from the basal rosette. In <i>S. jonesii</i>, the sepal appendage is absent or less than 1 mm; in both <i>S. dissecta</i> and <i>S. grandis</i>, it is 1–4 mm. The last two can be distinguished in flower by the presence in <i>S. grandis</i> of terete styles and ovary margins (replum) and in <i>S. dissecta</i> by flattened style bases and winged ovary margins. <i>Selenia</i> mexicana Standley is endemic to Nuevo León, Mexico.</p>
|tables=
|references={{Treatment/Reference
|id=beck2009a
|text=Beck, J. B. 2009. The phylogeny of Selenia (Brassicaceae) inferred from chloroplast and nuclear sequence data. J. Bot. Res. Inst. Texas 3: 169–176.
}}{{Treatment/Reference
|id=martin1940a
|text=Martin, R. F. 1940. A review of the cruciferous genus Selenia. Amer. Midl. Naturalist 23: 455–462.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaf blade margins 1-pinnatisect; fruiting pedicels from racemes; sepals with unappendaged apex.
|[[Selenia aurea|Selenia aurea]]
|-id=key-0-1
|1
|Leaf blade margins 2- or 3-pinnatisect; fruiting pedicels (at least some) from basal leaf axils or rosettes; sepals with appendaged apex
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Fruit valves vesicular, leathery; sepals persistent; fruits 5.5-7.5 mm wide.
|[[Selenia grandis|Selenia grandis]]
|-id=key-0-2
|2
|Fruit valves not vesicular, papery; sepals caducous or tardily so; fruits 8-17 mm wide
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Fruits oblong to elliptical, latiseptate; replums and styles flattened; petals (12-)15-20 × (5-)6-9 mm; ovules 28-40 per ovary; median filament pairs 6-10 mm; sepal apex appendage (1-)1.5-3 mm.
|[[Selenia dissecta|Selenia dissecta]]
|-id=key-0-3
|3
|Fruits usually globose, rarely obovoid, terete; replums and styles not flattened; petals 4-7 × 2.5-4 mm; ovules 8-14 per ovary; median filament pairs 3-4 mm; sepal apex appendage 0.5-0.8 mm.
|[[Selenia jonesii|Selenia jonesii]]
|}
</div></div><!--

-->{{#Taxon:
name=Selenia
|author=Ihsan A. Al-Shehbaz
|authority=Nuttall
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Brassicaceae
|distribution=c;sw United States;ne Mexico.
|reference=beck2009a;martin1940a
|publication title=J. Acad. Nat. Sci. Philadelphia
|publication year=1825
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_792.xml
|tribe=Brassicaceae tribe Cardamineae
|genus=Selenia
}}<!--

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