View source for Oenothera spachiana

{{Treatment/ID
|accepted_name=Oenothera spachiana
|accepted_authority=Torrey & A. Gray
|publications={{Treatment/Publication
|title=Fl. N. Amer.
|place=1: 498. 1840
|year=1840
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Blennoderma drummondii
|authority=Spach
|rank=species
}} {{Treatment/ID/Synonym
|name=Kneiffia spachiana
|authority=(Torrey & A. Gray) Small
|rank=species
}} {{Treatment/ID/Synonym
|name=Oenothera uncinata
|authority=Scheele
|rank=species
}}
|hierarchy=Onagraceae;Onagraceae subfam. Onagroideae;Onagraceae tribe Onagreae;Oenothera;Oenothera sect. Kneiffia;Oenothera spachiana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Onagraceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Onagraceae subfam. Onagroideae]]</div><div class="higher-taxon"><small>tribe</small>[[Onagraceae tribe Onagreae]]</div><div class="higher-taxon"><small>genus</small>[[Oenothera]]</div><div class="higher-taxon"><small>section</small>[[Oenothera sect. Kneiffia]]</div><div class="higher-taxon"><small>species</small>[[Oenothera spachiana]]</div></div>
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>annual, densely strigillose; from a sparsely branched taproot. <b>Stems</b> erect, usually unbranched or with few ascending branches, 10–30(–45) cm. <b>Leaves</b> in a basal rosette and cauline, basal 2–5 × 0.5–1.5 cm, petiole 0.5–2 cm, blade oblanceolate to elliptic, margins subentire; cauline 3–6 × 0.2–0.6 cm, petiole 0.2–0.6(–1.5) cm, blade narrowly lanceolate to linear, margins subentire. <b>Inflorescences</b> erect, flowers in leaf axils in distal 1/2 of plant. <b>Flowers</b> opening near sunrise; buds with free tips to 1 mm, erect to spreading; floral tube 4–10 mm; sepals 4–8 mm; petals pale yellow, fading pale pink, 5–14 mm; filaments 3–7 mm, anthers 2–4 mm, pollen 85–100% fertile; style 3–7 mm, stigma surrounded by anthers. <b>Capsules</b> broadly clavate, 4-angled, 5–15 × 3–5 mm, stipe 2–5 mm; sessile. <b>Seeds</b> 1 × 0.5 mm. <b>2n</b> = 14.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–May.
|habitat=Prairies, open roadsides, sandy places.
|elevation=10–200 m.
|distribution=Ala.;Ark.;La.;Miss.;Okla.;Tex.
|discussion=<p>G. B. Straley (1977) determined Oenothera spachiana to be self-compatible and autogamous. Collections outside the native range of O. spachiana have been made as a ballast weed in Camden County, New Jersey.</p><!--
--><p>Oenothera drummondii (Spach) Walpers (1843), not Hooker (1834) is a later homonym and pertains here.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Oenothera spachiana
|authority=Torrey & A. Gray
|rank=species
|parent rank=section
|synonyms=Blennoderma drummondii;Kneiffia spachiana;Oenothera uncinata
|basionyms=
|family=Onagraceae
|phenology=Flowering Mar–May.
|habitat=Prairies, open roadsides, sandy places.
|elevation=10–200 m.
|distribution=Ala.;Ark.;La.;Miss.;Okla.;Tex.
|reference=None
|publication title=Fl. N. Amer.
|publication year=1840
|special status=
|source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/e39f0e846f172941159b2045254d62d10d9823f6/coarse_grained_fna_xml/V10/V10_68.xml
|subfamily=Onagraceae subfam. Onagroideae
|tribe=Onagraceae tribe Onagreae
|genus=Oenothera
|section=Oenothera sect. Kneiffia
|species=Oenothera spachiana
}}<!--

-->[[Category:Treatment]][[Category:Oenothera sect. Kneiffia]]